Tags

Type your tag names separated by a space and hit enter

Startle modulation before, during and after exposure to emotional stimuli.
Int J Psychophysiol. 2002 Feb; 43(2):191-6.IJ

Abstract

Although affective modulation of the startle reflex is a highly replicable effect, the majority of studies have administered startle probes during exposure to affective stimuli. To examine more comprehensively the temporal course of startle potentiation, we assessed blink modulation before, during and immediately after exposure to positive, negative and neutral pictures. During each trial, cues about the affective content of pictures were presented, after which acoustic startle probes were delivered either before picture onset, during picture onset or immediately after picture offset. As expected, we observed a linear relation between picture valence and startle amplitude during picture viewing. Surprisingly, startle amplitude was larger while anticipating pleasant and unpleasant pictures relative to neutral pictures. No significant effects were observed during the offset phase. These results indicate that startle modulation is conditional upon temporal factors linked to stimulus onset and offset.

Authors+Show Affiliations

Department of Psycology, Vanderbilt University, 301 Wilson Hall, South Nashville, TN 37240, USA. gabriel.s.dichter@vanderbilt.eduNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

11809522

Citation

Dichter, Gabriel S., et al. "Startle Modulation Before, During and After Exposure to Emotional Stimuli." International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology, vol. 43, no. 2, 2002, pp. 191-6.
Dichter GS, Tomarken AJ, Baucom BR. Startle modulation before, during and after exposure to emotional stimuli. Int J Psychophysiol. 2002;43(2):191-6.
Dichter, G. S., Tomarken, A. J., & Baucom, B. R. (2002). Startle modulation before, during and after exposure to emotional stimuli. International Journal of Psychophysiology : Official Journal of the International Organization of Psychophysiology, 43(2), 191-6.
Dichter GS, Tomarken AJ, Baucom BR. Startle Modulation Before, During and After Exposure to Emotional Stimuli. Int J Psychophysiol. 2002;43(2):191-6. PubMed PMID: 11809522.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Startle modulation before, during and after exposure to emotional stimuli. AU - Dichter,Gabriel S, AU - Tomarken,Andrew J, AU - Baucom,Brian R, PY - 2002/1/26/pubmed PY - 2002/3/19/medline PY - 2002/1/26/entrez SP - 191 EP - 6 JF - International journal of psychophysiology : official journal of the International Organization of Psychophysiology JO - Int J Psychophysiol VL - 43 IS - 2 N2 - Although affective modulation of the startle reflex is a highly replicable effect, the majority of studies have administered startle probes during exposure to affective stimuli. To examine more comprehensively the temporal course of startle potentiation, we assessed blink modulation before, during and immediately after exposure to positive, negative and neutral pictures. During each trial, cues about the affective content of pictures were presented, after which acoustic startle probes were delivered either before picture onset, during picture onset or immediately after picture offset. As expected, we observed a linear relation between picture valence and startle amplitude during picture viewing. Surprisingly, startle amplitude was larger while anticipating pleasant and unpleasant pictures relative to neutral pictures. No significant effects were observed during the offset phase. These results indicate that startle modulation is conditional upon temporal factors linked to stimulus onset and offset. SN - 0167-8760 UR - https://www.unboundmedicine.com/medline/citation/11809522/Startle_modulation_before_during_and_after_exposure_to_emotional_stimuli_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0167876001001702 DB - PRIME DP - Unbound Medicine ER -