Tags

Type your tag names separated by a space and hit enter

Emotion, novelty, and the startle reflex: habituation in humans.
Behav Neurosci. 1993 Dec; 107(6):970-80.BN

Abstract

Previous research with both animal and human subjects has shown that startle reflex magnitude is potentiated in an aversive stimulus context, relative to responses elicited in a neutral or appetitive context. In the present experiment, the same pleasant, unpleasant, and neutral picture stimuli were repeatedly presented to human subjects. Startle reflex habituation was assessed in each stimulus context and was compared with the habituation patterns of heart rate, electrodermal, and facial corrugator muscle responses. All systems showed initial differentiation among affective picture contents and general habituation over trials. The startle reflex alone, however, continued to differentiate among pleasant, neutral, and unpleasant pictures throughout the presentation series. These results suggest that (a) the startle probe reflex is relatively uninfluenced by stimulus novelty, (b) the startle modulatory circuit (identified with amygdala-reticular connections in animals) varies systematically with affective valence, and (c) the modulatory influence is less subject to habituation than is the obligatory startle pathway or responses in other somatic and autonomic systems.

Authors+Show Affiliations

Center for Research in Psychophysiology, University of Florida, Gainesville 32610.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, P.H.S.

Language

eng

PubMed ID

8136072

Citation

Bradley, M M., et al. "Emotion, Novelty, and the Startle Reflex: Habituation in Humans." Behavioral Neuroscience, vol. 107, no. 6, 1993, pp. 970-80.
Bradley MM, Lang PJ, Cuthbert BN. Emotion, novelty, and the startle reflex: habituation in humans. Behav Neurosci. 1993;107(6):970-80.
Bradley, M. M., Lang, P. J., & Cuthbert, B. N. (1993). Emotion, novelty, and the startle reflex: habituation in humans. Behavioral Neuroscience, 107(6), 970-80.
Bradley MM, Lang PJ, Cuthbert BN. Emotion, Novelty, and the Startle Reflex: Habituation in Humans. Behav Neurosci. 1993;107(6):970-80. PubMed PMID: 8136072.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Emotion, novelty, and the startle reflex: habituation in humans. AU - Bradley,M M, AU - Lang,P J, AU - Cuthbert,B N, PY - 1993/12/1/pubmed PY - 1993/12/1/medline PY - 1993/12/1/entrez SP - 970 EP - 80 JF - Behavioral neuroscience JO - Behav Neurosci VL - 107 IS - 6 N2 - Previous research with both animal and human subjects has shown that startle reflex magnitude is potentiated in an aversive stimulus context, relative to responses elicited in a neutral or appetitive context. In the present experiment, the same pleasant, unpleasant, and neutral picture stimuli were repeatedly presented to human subjects. Startle reflex habituation was assessed in each stimulus context and was compared with the habituation patterns of heart rate, electrodermal, and facial corrugator muscle responses. All systems showed initial differentiation among affective picture contents and general habituation over trials. The startle reflex alone, however, continued to differentiate among pleasant, neutral, and unpleasant pictures throughout the presentation series. These results suggest that (a) the startle probe reflex is relatively uninfluenced by stimulus novelty, (b) the startle modulatory circuit (identified with amygdala-reticular connections in animals) varies systematically with affective valence, and (c) the modulatory influence is less subject to habituation than is the obligatory startle pathway or responses in other somatic and autonomic systems. SN - 0735-7044 UR - https://www.unboundmedicine.com/medline/citation/8136072/Emotion_novelty_and_the_startle_reflex:_habituation_in_humans_ L2 - http://content.apa.org/journals/bne/107/6/970 DB - PRIME DP - Unbound Medicine ER -