Document Detail


Startle Response and Prepulse Inhibition Modulation by Positive- and Negative-Induced Affect.
MedLine Citation:
PMID:  24188916     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The startle response, a set of reflex behaviours intended to prepare the organism to face a potentially threatening stimulus, can be modulated by several factors as, for example, changes in affective state, or previous presentation of a weak stimulus (a phenomenon termed Pre-Pulse Inhibition [PPI]). In this paper we analyse whether the induction of positive or negative affective states in the participants modulates the startle response and the PPI phenomenon. The results revealed a decrease of the startle response and an increase of the PPI effect when registered while the participants were exposed to pleasant images (Experiment 1), and an increase of the startle response and of the PPI effect when they were exposed to a video-clip of unpleasant content (Experiment 2). These data are interpreted considering that changes in affective states correlates with changes in the startle reflex intensity, but changes in PPI might be the result of an attentional process.
Authors:
Luis Gonzalo De la Casa; Auxiliadora Mena; Andrea Puentes
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-11-1
Journal Detail:
Title:  International journal of psychophysiology : official journal of the International Organization of Psychophysiology     Volume:  -     ISSN:  1872-7697     ISO Abbreviation:  Int J Psychophysiol     Publication Date:  2013 Nov 
Date Detail:
Created Date:  2013-11-5     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8406214     Medline TA:  Int J Psychophysiol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2013.
Affiliation:
Dpt. Experimental Psychology Seville University Spain. Electronic address: delacasa@us.es.
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