The effects of prepulse-blink reflex trial repetition and prepulse change on blink reflex modification at short and long lead intervals

Lipp, OV and Siddle, DAT (1998) The effects of prepulse-blink reflex trial repetition and prepulse change on blink reflex modification at short and long lead intervals. Biological Psychology, 47 1: 45-63. doi:10.1016/S0301-0511(97)00017-3


Author Lipp, OV
Siddle, DAT
Title The effects of prepulse-blink reflex trial repetition and prepulse change on blink reflex modification at short and long lead intervals
Journal name Biological Psychology   Check publisher's open access policy
ISSN 0301-0511
Publication date 1998-01-01
Year available 1998
Sub-type Article (original research)
DOI 10.1016/S0301-0511(97)00017-3
Open Access Status DOI
Volume 47
Issue 1
Start page 45
End page 63
Total pages 19
Place of publication AMSTERDAM
Publisher ELSEVIER SCIENCE BV
Language eng
Abstract Prepulse inhibition and facilitation of the blink reflex are said to reflect different responses elicited by the lead stimulus, transient detection and orienting response respectively. Two experiments investigated the effects of trial repetition and lead stimulus change on blink modification. It was hypothesized that these manipulations will affect orienting and thus blink facilitation to a greater extent than they will affect transient detection and thus blink inhibition. In Experiment 1 (N = 64), subjects were trained with a sequence of 12 lead stimulus and 12 blink stimulus alone presentations, and 24 lead stimulus-blink stimulus pairings. Lead interval was 120 ms for 12 of the trials and 2000 ms for the other 12. For half the subjects this sequence was followed by a change in pitch of the lead stimulus. In Experiment 2 (N = 64), subjects were trained with a sequence of 36 blink alone stimuli and 36 lead stimulus-blink stimulus pairings. The lead interval was 120 ms for half the subjects and 2000 ms for the other half. The pitch of the lead stimulus on prestimulus trials 31-33 was changed for half the subjects in each group. In both experiments, the amount of blink inhibition decreased during training whereas the amount of blink facilitation remained unchanged. Lead stimulus change had no effect on blink modification in either experiment although it resulted in enhanced skin conductance responses and greater heart rate deceleration in Experiment 2. The present results are not consistent with the notion that blink facilitation is linked to orienting whereas blink inhibition reflects a transient detection mechanism. (C) 1998 Elsevier Science B.V.
Keyword Behavioral Sciences
Psychology
Psychology, Biological
Psychology, Experimental
Prepulse Inhibition
Stimulus Change
Transient Detection
Startle Reflex
Modulation
Stimulation
Intensity
Attention
Stimulus
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Psychology Publications
 
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Created: Mon, 13 Aug 2007, 20:20:25 EST