Startle inhibition at long lead intervals in a spatial cueing task

Alhadad, Sakinah S. J. and Lipp, Ottmar V. (2011). Startle inhibition at long lead intervals in a spatial cueing task. In: Special Issue: Society for Psychophysiological Research Abstracts for the Fifty-First Annual Meeting. 51st Annual Meeting of the Society of Psychophysiological Research, Boston, MA, United States, (S57-S57). 14-18 September 2011. doi:10.1111/j.1469-8986.2011.01259.x


Author Alhadad, Sakinah S. J.
Lipp, Ottmar V.
Title of paper Startle inhibition at long lead intervals in a spatial cueing task
Conference name 51st Annual Meeting of the Society of Psychophysiological Research
Conference location Boston, MA, United States
Conference dates 14-18 September 2011
Proceedings title Special Issue: Society for Psychophysiological Research Abstracts for the Fifty-First Annual Meeting   Check publisher's open access policy
Journal name Psychophysiology   Check publisher's open access policy
Place of Publication Hoboken, NJ, United States
Publisher Wiley-Blackwell Publishing
Publication Year 2011
Sub-type Poster
DOI 10.1111/j.1469-8986.2011.01259.x
ISSN 0048-5772
1469-8986
Volume 48
Issue Supp. 1
Start page S57
End page S57
Total pages 1
Collection year 2012
Language eng
Abstract/Summary Blink startle is said to be inhibited at short lead intervals; an effect that decreases with increasing lead interval. Experiment 1 assessed startle modulation in a modified spatial cueing task with directional or neutral cues. Directional cues were valid on 80% of the trials. Acoustic startle was elicited 120 and 800 ms after the onset of the 1 s cues. Startle inhibition did not differ between cues and neutral stimuli. Unexpectedly, startle inhibition was larger at the 800 ms lead interval than at the 120 ms lead interval. Maximal inhibition of acoustic startle during visual stimuli has been shown to occur later (180 ms) than during acoustic stimuli (120ms), though no evidence of enhanced inhibition has been shown to occur as late as 800ms. Experiment 2 assessed whether this pattern of results reflected two distinct inhibitory processes, prepulse inhibition and target anticipation, or a unitary extended inhibition and whether it covaries with task demands. Startles were elicited at 120, 600, and 800 ms after stimulus onset during directional and neutral cues and during ‘‘NoGo’’ cues that did not require a response. Startle magnitude decreased linearly across lead intervals during directional and neutral cues, but remained unchanged across the lead intervals during the ‘‘NoGo’’ cues. These results indicate that target anticipation in a demanding task can result in extended blink startle inhibition that extends well beyond the time window in which prepulse inhibition is usually observed.
Keyword Startle eyeblink reflex
Attention
Spatial cueing
Q-Index Code CX
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article first published online: 12 AUG 2011. Published under Poster Session Abstracts: Special Issue: Society for Psychophysiological Research Abstracts for the Fifty-First Annual Meeting.

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