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Trigger

Trigger (July 4, 1934 – July 3, 1965) was a stallion best known as the equine co-star and personal mount of American cowboy actor and singer in films and television programs from the late through the 1950s. Originally named Golden Cloud and bred as a cross rather than a Quarter Horse, Trigger stood approximately 15.3 hands tall and was purchased by Rogers for $2,500 in 1938 during the production of the film Under Western Stars. Renowned for his exceptional trainability, he mastered over 150 tricks, including nodding yes or no, walking on hind legs for distances up to 50 feet, and simulating injury or gunfire responses, earning him the nickname "the smartest horse in movies" or "Wonder Horse" among trainers and members. Trigger appeared in over 80 Rogers films and 100 television episodes, often outfitted with a custom gold-and-silver saddle valued at $5,000, contributing to his status as one of Hollywood's earliest celebrity animals before figures like Mr. Ed. Rogers retained ownership of Trigger until the horse's death at age 30 (or 33 by some accounts) from natural causes at the family's ranch, after which his body was taxidermied and displayed as a centerpiece in the Roy Rogers and Museum until its closure in 2010. While Trigger lacked notable controversies, his career highlighted early techniques in entertainment, relying on positive reinforcement and repetition rather than coercion, and he inspired merchandise, comic books, and a cultural legacy as a symbol of heroism.

Physical mechanisms

Firearms and weaponry

In firearms, the trigger functions as a -operated that, when actuated by the , releases the sear or equivalent component to enable the , , or to strike the primer, igniting the and discharging the . This design principle ensures controlled initiation of the firing cycle, distinguishing it from passive ignition systems in earlier weapons. The English term "trigger" originated in the early from the "trekker," denoting a "puller" derived from "trekken" (to pull), initially applied to the pulling in firearms that lowered a lit into the priming pan. The mechanical trigger evolved alongside ignition systems starting with the matchlock in the early 1400s, where the trigger pull pivoted a serpentine arm to apply a slow-burning match to loose powder in the flash pan adjacent to the touch hole, marking the first self-igniting portable firearm mechanism independent of manual application. By the 1500s, the wheellock introduced a clockwork-driven steel wheel that spun against pyrite to generate sparks upon trigger release, eliminating the need for a match but requiring complex, costly springs. The flintlock, dominant from the late 1600s to the mid-1800s, refined this by using the trigger to drive a flint-tipped hammer against a steel frizzen, producing reliable sparks to ignite the pan; its simplicity and weather resistance made it standard for military muskets like the Brown Bess. Percussion cap systems in the 1820s shifted to a trigger-released hammer striking a fulminate-of-mercury cap, enabling fully enclosed ignition and reducing misfires from external elements. Modern firearm triggers, prevalent since the late 19th century in repeating rifles and semi-automatic pistols, incorporate precision machining for consistent sear engagement and reset, with semi-automatic designs recycling energy from recoil or gas to rechamber rounds after each shot. Double-action triggers, common in revolvers and some semi-automatics, require the initial pull to both cock the internal hammer or striker and release it—typically demanding 10-15 pounds of force—before subsequent single-action pulls drop to 4-6 pounds, balancing inadvertent discharge prevention with follow-up speed. Striker-fired pistols, like the Glock series introduced in 1982, employ partially pre-cocked strikers activated by a consistent 5-7 pound pull, integrating passive safeties such as trigger blade blocks to block movement unless fully depressed. Engineering trade-offs in trigger center on pull weight versus operational reliability: lighter pulls (2-4 pounds in tuned firearms) enhance accuracy by minimizing finger-induced sight disturbance and enable faster , but elevate accidental risk, particularly under physical or with holstered carry, where forces as low as 3 pounds can suffice for negligent actuation. Conversely, heavier pulls (6+ pounds for handguns) prioritize by requiring deliberate force, reducing sympathetic muscle contractions during handling, though they demand more shooter training to avoid flinch-induced inaccuracies; standards like the U.S. military's 5.5-9.5 minimum for M9 pistols reflect this , prioritizing mission reliability over split-second speed. Advanced features, such as adjustable two-stage triggers in , segment the pull into a light initial take-up (1-2 pounds) for aiming followed by a crisp break, optimizing while maintaining a safety buffer against premature release.

Switches and actuators in devices

In mechanical devices, triggers function as precise actuators that initiate stored release upon minimal input, as seen in spring-loaded mousetraps. The trigger mechanism typically comprises a bait-holding delicately balanced against a that restrains a high-tension ; disturbance by a as low as 0.1-0.5 newtons—equivalent to a mouse's —disengages the , propelling a wire at speeds up to 100 km/h to effect capture. This design leverages principles for , where the trigger's point amplifies sensitivity while the provides the actuating , ensuring rapid response without components. Elevator systems employ trigger switches as critical safety actuators to enforce operational boundaries and avert hazards. switches, positioned at top and bottom hoistways, detect the car's position via mechanical or proximity sensing and interrupt the drive motor when endpoints are reached, preventing over-travel; these are rated for millions of cycles under standards like ASME A17.1, which mandates redundant triggering for redundancy. governors incorporate centrifugal mechanisms that, upon exceeding rated speeds (typically 115% of nominal), trigger jaw-like to grip guide rails, halting descent within 1.5-2 meters. Door interlock triggers further ensure motion only when all doors are fully closed, using cam-operated switches that complete the only in the secure state. Electrical triggers in handheld power tools, such as drills and , operate as momentary switches that energize circuits solely during actuation, minimizing from prolonged . These variable-speed triggers integrate rheostat elements—often carbon pile or silicon-controlled rectifiers—to modulate power from 0-100% based on squeeze force, with ratings up to 10-15 amperes at 120-250 volts ; release immediately de-energizes the motor, embodying a against continuous operation. Safety enhancements include lock-off detents requiring deliberate override and ergonomic guards to prevent inadvertent depression, as specified in UL 45 standards for portable tools. Automotive seatbelt systems utilize inertial and sensor-based triggers for occupant restraint actuation. The retractor employs a vehicle-sensitive , such as a weighted or rolling ball in a curved , that shifts under deceleration exceeding 0.5-1 —thresholds calibrated to distinguish routine stops from collisions—engaging a pawl to lock the spool and arrest payout. Pretensioners augment this by deploying pyrotechnic actuators, ignited by sensors detecting frontal impacts above 16-25 km/h, which tension the by 50-100 mm in milliseconds to eliminate slack. designs incorporate redundant sensors and force limiters to cap loads at 4-6 kN, preventing thoracic injuries while ensuring buckle release remains possible post-event. These triggers incorporate principles to mitigate accidental activation, such as requiring dual simultaneous inputs in high-force machinery or defaulting to a non-actuated state upon power loss. In devices with potential for , like presses or elevators, standards demand anti-tie-down features—where incomplete or sequential actuation voids the trigger—and emergency overrides, reducing unintended releases by over 90% in tested configurations.

Science and technology

Computing and database triggers

In systems, a trigger is a named database object containing procedural SQL that executes automatically in response to predefined events, primarily (DML) operations such as INSERT, UPDATE, or DELETE on a specified or . Triggers enable the enforcement of business rules, , or automated maintenance tasks without requiring explicit calls from application . They are categorized by timing relative to the event: BEFORE triggers fire prior to the DML action, allowing input data modification or validation that can prevent the operation if conditions fail; AFTER triggers execute post-operation, suitable for changes or propagating effects to other tables. Some systems also support INSTEAD OF triggers, which replace the original DML statement entirely with custom logic, often used on s. Database triggers trace their origins to early commercial relational systems, with Oracle Database 7, released in 1992, introducing them alongside PL/SQL for procedural extensions, building on the foundational SQL capabilities first commercialized in Oracle V2 in 1979. Prior implementations existed in research prototypes, but widespread adoption followed hardware advancements enabling stored procedures. The SQL:1992 standard (SQL-92), ratified by ANSI and ISO, formalized triggers as a core feature, specifying syntax for event specification, timing, and activation conditions to promote interoperability across vendors like Oracle, IBM DB2, and Microsoft SQL Server. This standardization addressed earlier proprietary variations, though full compliance varied; for example, SQL-92 deferred some trigger complexities but established the foundation for auditing and integrity mechanisms. Common applications include creating audit trails, where an AFTER UPDATE trigger on a transactional table inserts records into a history table capturing old and new values, timestamps, and user details for compliance and debugging. Triggers also support in complex scenarios, such as custom cascading deletes across non-standard relationships or enforcing domain-specific rules unattainable via simple constraints, as exemplified in documentation using triggers on employee-department tables to validate and propagate changes. For instance, a BEFORE INSERT trigger might check inventory availability before allowing an order entry, rolling back if insufficient stock exists. Triggers impose performance costs, as each qualifying DML event invokes the associated code, adding latency from execution overhead—potentially multiplying query times in high-volume systems—and risking recursion if a trigger's actions retrigger the same event, leading to stack overflows or infinite loops. Systems like SQL Server and PostgreSQL mitigate this via options to disable nested triggers or by embedding conditional checks (e.g., using flags or IF statements) to halt re-execution; empirical benchmarks show recursive triggers can degrade throughput by orders of magnitude without safeguards. Best practices recommend minimizing trigger complexity, favoring declarative constraints where possible, and monitoring via execution plans to quantify overhead.

Electronics and engineering triggers

In electronics, a trigger is a circuit element designed to initiate a state change or action upon detecting a specific input signal threshold, ensuring reliable operation in noisy environments through mechanisms like hysteresis. The Schmitt trigger exemplifies this, functioning as a comparator with positive feedback that introduces a hysteresis band between upper trigger point (UTP) and lower trigger point (LTP) voltages, preventing rapid oscillations from input noise or slow transitions. This causal design stabilizes switching by requiring the input to cross distinct thresholds for rising and falling edges, converting imprecise analog signals into clean binary outputs. Invented by Otto H. Schmitt in 1934 during his graduate studies at the , inspired by biomimetic modeling of squid nerve impulses, the was initially termed a "thermionic trigger" using circuitry but evolved into - and IC-based implementations. Schmitt's work demonstrated empirically that width, determined by feedback resistor ratios, directly correlates with noise rejection capability, with typical bands of 1-5% of supply voltage in modern op-amp versions providing measurable immunity to signals below 1 mV peak-to-peak noise. Key applications include relaxation oscillators, where the trigger generates square waves by alternately charging and discharging a across hysteresis thresholds, achieving frequencies from Hz to MHz depending on time constants; signal conditioning in ADCs to eliminate ; and debouncing mechanical switches by filtering contact bounce transients lasting 1-10 ms. In the , introduced by Signetics in 1971, internal comparators form a Schmitt-like configuration for astable and monostable modes, enabling pulse widths precisely controlled by external resistors and s, with over a billion units produced annually for timing circuits in . Engineering analysis highlights reliability gains from , which empirically reduces false triggering in environments with >10% signal-to-noise ratios, outperforming zero-hysteresis comparators in tests showing up to 90% fewer glitches in automotive interfaces. However, drawbacks include increased via added components, potentially raising power dissipation by 20-50% in low-voltage designs, and sensitivity to loading effects that shift thresholds nonlinearly, necessitating stages in applications; adjustable hysteresis variants mitigate this but introduce variability from component tolerances up to 5%.

Psychology and neuroscience

Emotional and trauma triggers

Emotional and trauma triggers are specific stimuli—such as sensory cues, environmental reminders, or internal states—that elicit involuntary emotional, physiological, or behavioral responses linked to prior adverse experiences, particularly those involving intense or distress. These responses arise from associative learning processes where stimuli become conditioned to evoke reactions akin to the original event, bypassing conscious control and often resulting in hyperarousal, avoidance, or re-experiencing phenomena. Neurobiologically, the serves as a central hub, rapidly processing threat-related inputs from sensory modalities like sight, sound, or smell, and facilitating that persists due to strengthened neural pathways. In (PTSD), triggers manifest as intrusion symptoms under criteria established in 2013, including recurrent involuntary memories, distressing dreams, or dissociative flashbacks precipitated by cues symbolizing or resembling aspects of the traumatic event. These cues can include auditory signals (e.g., explosions mimicking combat noise) or olfactory triggers (e.g., smoke evoking fire-related trauma), activating amygdala-prefrontal cortex circuits dysregulated in PTSD, which impair contextual fear extinction and perpetuate maladaptive responses. Empirical studies confirm heightened reactivity to such stimuli in affected individuals, correlating with symptom severity and underscoring a causal role in symptom maintenance rather than mere correlation. Beyond PTSD, triggers contribute to in substance use disorders, where acute elevates levels, sensitizing reward pathways and intensifying cravings through hypothalamic-pituitary-adrenal axis dysregulation. Laboratory-induced paradigms demonstrate that such physiological responses predict higher rates, with surges directly linking environmental stressors to renewed drug-seeking in vulnerable populations. However, the impact of triggers remains context-specific and not universal; lifetime PTSD prevalence stands at approximately 6% and 3.9% globally per World Surveys, indicating that while exposure is widespread, only a subset develops persistent trigger-mediated pathology, challenging narratives of ubiquity. This limited incidence highlights the interplay of genetic, neuroplastic, and experiential factors in determining susceptibility, rather than deterministic outcomes from all stressors.

Trigger warnings: origins, implementation, and empirical critiques

Trigger warnings originated in the late 1990s within online feminist forums, such as those associated with Ms. Magazine, where users posted alerts to prepare readers for content potentially evoking trauma responses akin to posttraumatic stress disorder (PTSD) symptoms. This practice drew from clinical understandings of psychological triggers in PTSD therapy but adapted to digital spaces for preempting distress from discussions of sexual assault, violence, or other sensitive topics. By the early 2000s, the concept spread to broader mental health online communities, emphasizing forewarning to enable avoidance rather than direct therapeutic intervention. Implementation expanded into academic and media contexts in the 2010s, with institutions like issuing guidelines in 2014 urging faculty to include warnings in syllabi for materials involving , , violence, or classism to alert potentially traumatized students. These efforts faced backlash and were revised due to concerns over , yet similar advisories persisted in course descriptions and lectures at other universities. In media, streaming services like began incorporating content warnings around 2017-2018, particularly for series such as , labeling episodes with themes of or to signal potential emotional impact, though not always framed explicitly as "trigger warnings." The intent across these applications remains prophylactic: to foster self-selection away from distressing material, assuming foreknowledge reduces subsequent harm. Empirical research, including a 2023 meta-analysis of 12 studies involving over 4,000 participants, finds trigger warnings yield no significant reduction in negative emotional responses to distressing , nor do they enhance comprehension or mitigate PTSD-like symptoms. Instead, they reliably heighten anticipatory anxiety, priming individuals to expect greater distress and potentially amplifying subsequent reactions through heightened vigilance. Experiments by Sanson et al. across six studies with students and online samples exposed participants to warned versus unwarned negative stimuli, revealing trivial or null effects on affect, intrusive thoughts, or avoidance, with no evidence of protective benefit even for those with relevant histories. This aligns with causal mechanisms in , where avoidance reinforced by warnings contradicts habituation principles, fostering dependency on signals rather than resilience; studies from 2024-2025, including scoping reviews in , confirm persistent inefficacy and risks of without symptom alleviation. Critiques highlight multiple downstream harms, such as promoting fragility by signaling uncontrollability of , undermining educational , and creating illusions of unsupported by , as noted in psychological analyses questioning their net value amid institutional biases favoring precautionary norms over evidence.

Biology and medicine

Myofascial trigger points

Myofascial trigger points (MTrPs) are defined as discrete, focal, hyperirritable spots within a palpable taut band of that generate local and upon compression. These nodules, first systematically described by Janet Travell in 1942 and elaborated in the 1983 textbook Myofascial Pain and Dysfunction: The Trigger Point Manual co-authored with David Simons, exhibit hypersensitivity and may produce a characteristic local twitch response—a visible or palpable contraction of muscle fibers—when stimulated during . Active MTrPs cause spontaneous pain or exacerbate it with movement, while latent ones elicit pain only on provocation, distinguishing them as phenomena verifiable through and rather than psychological constructs. Diagnosis relies primarily on clinical to identify the taut band and elicit patterns or twitch responses, with supporting evidence from ultrasound imaging that reveals hypoechoic regions, thickened taut bands, or altered stiffness via shear wave elastography in affected muscles. Systematic reviews confirm ultrasound's utility in objectively characterizing MTrPs, showing features like elliptical hypoechoic areas correlating with palpated nodules, though standardization remains limited. In , MTrPs contribute to widespread pain, with studies reporting active points in 68% of patients and tender points specified in diagnostic criteria aligning with MTrP locations, underscoring their role in regional pain summation. Etiological models posit MTrPs arise from localized muscle fiber contraction leading to energy crises, with contributing factors including sustained low-level contraction, direct , or visceral-somatic reflexes, though debates persist on primacy of mechanisms like regional ischemia—evidenced by elevated and reduced in affected tissue—versus neural or dysfunctional endplate activity. The integrated incorporates multiple pathways, rejecting singular causation in favor of interactions between mechanical, metabolic, and neurological elements, supported by findings of fragmented sarcomeres and autonomic changes. Treatments target inactivation via manual therapies, with randomized controlled trials (RCTs) demonstrating —insertion of a filament needle without injectate—provides short-term reduction and improved pressure thresholds compared to sham or control interventions, particularly in and low back regions. Trigger point injections with local anesthetics yield similar or modestly superior relief at 9–28 days over , but evidence for long-term efficacy remains inconsistent across meta-analyses, which note high bias risk in blinding and call for larger trials. Prevalence estimates indicate MTrPs affect up to 85% of individuals seeking care, emphasizing their despite ongoing mechanistic uncertainties.

Physiological and biochemical triggers

Physiological triggers encompass neural and hormonal signals that initiate rapid, adaptive responses in the body, such as reflexes or reproductive events, through direct causal activation of effector pathways. For instance, the knee-jerk reflex, or reflex, is triggered by mechanical stretch of muscle spindles in the femoris when the is tapped, sending afferent signals via Ia sensory fibers to the , where they synapse monosynaptically with alpha motor neurons to elicit contraction and leg extension. This exemplifies a low-latency neural trigger evolved for postural stability, bypassing higher centers to ensure swift maintenance. Hormonal triggers operate via systemic surges that propagate causal chains, as seen in the (LH) surge during the , where rising levels from the dominant follicle prompt pulses from the , culminating in a 10-fold LH peak that activates ovarian proteolytic enzymes, degrades the follicular wall, and releases the approximately 36-40 hours later. Similarly, perceived threats trigger hypothalamic activation of the , releasing norepinephrine and epinephrine from chromaffin cells, which bind adrenergic receptors to increase , redirect blood flow to muscles, and mobilize glucose—preparing the for fight-or-flight in a manner conserved evolutionarily for against predators. Biochemical triggers involve molecular cascades where initial activators propagate enzymatic activations, often modeled by Michaelis-Menten kinetics, which describe reaction velocity as v = \frac{V_{\max} [S]}{K_m + [S]}, where concentration influences rate until saturation, enabling amplification in low-concentration environments. In , vascular injury exposes , triggering the extrinsic pathway's Factor VII activation of , or contact activation initiates the intrinsic pathway via , leading to sequential cleavages (e.g., prothrombin to ) that polymerize fibrinogen into clots. Dysregulated triggers contribute to pathologies, such as in , where failure to eliminate self-reactive lymphocytes allows environmental or molecular cues to overactivate adaptive responses, attacking host tissues as in . These mechanisms underscore causal realism in physiology, where triggers initiate deterministic chains adaptive for but vulnerable to malfunction.

Named entities

Individuals

Bruce Graham Trigger (June 18, 1937 – December 1, 2006) was a Canadian archaeologist, anthropologist, and ethnohistorian recognized for his foundational research on the archaeology and ethnohistory of northeastern North American indigenous peoples, establishing him as a leading authority in Canadian prehistory. He conducted fieldwork on significant expeditions, including serving as chief archaeologist for excavations in Egyptian Nubia in 1962, and contributed to broader theoretical advancements in archaeology through comparative studies of early civilizations. Trigger authored key texts such as A History of Archaeological Thought (first published 1989, second edition 2006), which traces the evolution of archaeological methodologies from medieval times to the modern era, emphasizing empirical and interpretive shifts in the discipline. His work integrated anthropological perspectives with archaeological evidence, advocating for theoretically informed empiricism while critiquing ideological biases in historical interpretations of indigenous societies.

Animals

Trigger, a stallion, gained prominence as the equine partner of American entertainer , starring alongside him in over 80 films and numerous television episodes from the late through the . Foaled on July 4, 1934, originally under the name Golden Cloud, the horse was purchased by Rogers in 1938 after their debut collaboration in the film Under Western Stars. Standing 15.3 hands tall with a distinctive flowing and tail, Trigger was renamed by Rogers' associate for his swift, trigger-like speed and responsiveness. Renowned for his intelligence and versatility, Trigger performed a wide array of trained tricks, including rearing on command, bowing, dancing, whinnying on cue, knocking on doors, untying ropes, and even simulating the firing of a pistol by pawing the trigger. These feats, executed reliably in live performances and on screen, demonstrated the efficacy of methodical horse training practices prevalent in mid-20th-century Hollywood, which emphasized repetition and positive reinforcement to elicit precise behaviors from equines. Billed as "The Smartest Horse in the Movies," Trigger's abilities contributed to his cultural status as a symbol of trainable animal prowess in popular media. Trigger died of natural causes on July 3, 1965, at Rogers' Hidden Valley Ranch in , at the age of 30. His body was taxidermically mounted in a dynamic rearing posture and became a featured exhibit in the , which opened to the public in 1967 in before relocating to , and later , in 2003. Following the museum's closure in 2010 amid declining attendance, Trigger's preserved form was auctioned at in , selling for $266,500 to , a network dedicated to rural programming that undertook its ongoing display to maintain public access.

Arts, entertainment, and media

Fictional characters and entities

In Disney's 1973 animated film , Trigger is a vulture henchman who serves the alongside his partner Nutsy, assisting in schemes to capture the outlaw and enforce taxation on Nottingham's residents; the character is voiced by . In the BBC sitcom (1981–2003), Trigger—whose real name is Colin Ball—is depicted as a slow-witted, loyal road sweeper and longtime friend of protagonist Del Boy Trotter, often contributing comic relief through his malapropisms and insistence on calling "Dave"; the role was played by . In the 2019 video game Ace Combat 7: Skies Unknown developed by Bandai Namco, Trigger serves as the callsign for the silent protagonist, a skilled Osean Air Defense Force pilot assigned to the Long Range Strategic Strike Group during the Lighthouse War against the Kingdom of Erusea, where the character undertakes high-stakes aerial combat missions amid accusations of friendly fire. In DC Comics, the Trigger Twins designate two distinct pairs of fictional characters. The heroic duo of brothers Walt and Wayne Trigger, identical twins who operate as undercover lawmen in the Old West by disguising themselves as outlaws, first appeared in All-Star Western #59 in November 1951, created by writer Robert Kanigher and artist Carmine Infantino. A separate villainous pair, criminal brothers Tom and Tad Trigger—separated at birth and reunited as Gotham City gangsters mimicking Old West attire—debuted as Batman adversaries in Detective Comics #667 in October 1993.

Films and television

My Pal Trigger (1946) is an American starring as a character who acquires and trains the horse , depicting a fictionalized origin of their partnership amid conflicts with rival horse breeders. Directed by Frank McDonald, the film features and Jack Holt in supporting roles. Trigger, ' horse, appeared prominently in over 80 feature films with Rogers between 1938 and 1957, including titles such as Under Western Skies (1945), Bells of Coronado (1952), and Roll on Texas Moon (1946), where the horse performed trained tricks integral to action sequences. On television, Trigger featured in all 100 episodes of (1951–1957), a series in which Rogers portrayed a rancher solving crimes, with the horse serving as his steadfast companion in chases and stunts. (2025) is a South Korean action thriller television series directed and written by Kwon Oh-seung, released on on July 25, 2025, consisting of 10 episodes. Starring as a and Kim Young-kwang as an arms dealer, it examines societal chaos from illegal gun proliferation in gun-controlled , produced with a budget of ₩30 billion. The series holds an IMDb rating of 7.2/10 based on 4,247 user votes. Trigger (2018) is a psychological drama series starring as psychologist Artyom, who treats patients with severe mental issues including , across multiple episodes exploring personal and societal triggers. It received an rating of 7.4/10 from 1,242 users.

Literature

Trigger Warning: Short Fictions and Disturbances is a 2015 anthology by comprising short stories, poems, and other pieces spanning genres including , , and fantasy. Published by William Morrow, the collection features previously unpublished works alongside commissioned stories, such as one for the anniversary and tributes to authors like . Gaiman introduces the title as a nod to internet-era content warnings, while emphasizing 's capacity to unsettle readers. Trigger (2006) by Susan Vaught is a novel centered on Jersey Hatch, a teenager recovering from after a during a hunting accident. Published by Bloomsbury Children's Books, it addresses themes of , self-forgiveness, and through the protagonist's fragmented perspective. Trigger Mortis (2015) by is an authorized novel set shortly after Ian Fleming's , incorporating unpublished material from Fleming's notes. Published by Orion Books in the UK and in the US, the thriller involves espionage during the early , with confronting a Soviet-American plot. Other works include Trigger (2016) by Leo An, a fantasy novel from Tor Teen about a tetrachromat girl who detects auras, leading her into conflicts. Additionally, Trigger (2020) by Michael C. Grumley is a exploring advanced and human augmentation. These titles often employ "trigger" metaphorically to denote catalysts for action, revelation, or psychological response, though empirical links to clinical triggers remain unestablished in literary analysis.

Music

"Trigger" is the title of the eponymous debut album by the American band Trigger, released in March 1978 on , featuring tracks such as "Baby Don't Cry" and noted for its alignment with the era's hard rock sound. Japanese pop-rock band released their eighth studio album ∠TRIGGER on March 24, 2010, containing 13 tracks including "Animarossa." Swedish melodic death metal band In Flames issued the EP Trigger on June 10, 2003, via ; the title track originated from their 2002 album and appeared on the soundtrack for the 2003 film . Among songs titled "Trigger," the electronic dance track by featuring was released on October 24, 2019, as part of the album Music Is the Weapon. In Flames' "Trigger," a song, debuted on September 3, 2002, via . Swedish band released their song "Trigger" in January 2024. American singer-songwriter Michelle Willis issued "Trigger" (featuring Taylor Ashton) in 2022, described by the artist as exploring self-sabotage and embracing choices. Willie Nelson's N-20 classical guitar, acquired in and nicknamed Trigger after ' horse, has been his primary instrument for over 50 years, surviving a house fire and developing a distinctive worn appearance from constant use; it produces a warm tone central to his sound.

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