PMID- 25746937 OWN - NLM STAT- MEDLINE DCOM- 20151207 LR - 20150327 IS - 1872-7697 (Electronic) IS - 0167-8760 (Linking) VI - 96 IP - 1 DP - 2015 Apr TI - Is neural adaptation of the N170 category-specific? Effects of adaptor stimulus duration and interstimulus interval. PG - 8-15 LID - S0167-8760(15)00107-5 [pii] LID - 10.1016/j.ijpsycho.2015.02.030 [doi] AB - Neural adaptation paradigms have been used in the electrophysiological and neuroimaging literature to characterise neural populations underlying face and object perception. It was recently reported by Nemrodov and Itier (2012) that adaptation of the N170 event-related potential (ERP) component is not stimulus category-specific over rapid adapting stimulus durations (S1 durations) and interstimulus intervals (ISIs). We therefore tested the category-specificity of adaptation over a range of S1 durations and ISIs. Faces and chairs were presented at S1 (for 200, 500 or 1000 ms) and S2 (for 200 ms), over a variable ISI (200 or 500 ms). Mean amplitudes of the P1, N170 and P2 visual ERP components were measured following S1 and S2 stimuli. Faces at S1 led to the smallest (i.e., most adapted) N170 amplitudes to both faces and chairs at S2, more than chairs at S1. N170s at S2 were smallest after a 500ms S1 duration; but N170 amplitude did not vary over ISI. Effects were also seen for the two surrounding positive components, the P1 and P2. Presenting faces at S1 led to enhanced P1 amplitudes evoked by S2 chair stimuli. The P2 showed the smallest amplitudes following the shorter 200 ms ISI. These results indicate that adaptation of the N170 is not actually category-specific but instead dependent on the S1 category (regardless of S2 category), and may also be influenced by earlier effects at the P1 (i.e., not specific to the N170). This challenges the assumption that N170 category adaptation indexes effects on distinct neural populations that differ between faces and non-face objects. CI - Copyright (c) 2015 Elsevier B.V. All rights reserved. FAU - Feuerriegel, Daniel AU - Feuerriegel D AD - Cognitive Neuroscience Laboratory, University of South Australia, Adelaide, Australia. Electronic address: Daniel.Feuerriegel@unisa.edu.au. FAU - Churches, Owen F AU - Churches OF AD - Brain and Cognition Laboratory, Flinders University, Adelaide, Australia. FAU - Keage, Hannah A D AU - Keage HA AD - Cognitive Neuroscience Laboratory, University of South Australia, Adelaide, Australia. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150305 PL - Netherlands TA - Int J Psychophysiol JT - International journal of psychophysiology : official journal of the International Organization of Psychophysiology JID - 8406214 SB - IM MH - Adaptation, Physiological/*physiology MH - Adult MH - Analysis of Variance MH - *Brain Mapping MH - Electroencephalography MH - Evoked Potentials/*physiology MH - Female MH - Humans MH - Male MH - Pattern Recognition, Visual/physiology MH - Photic Stimulation MH - Reaction Time MH - Time Factors MH - Young Adult OTO - NOTNLM OT - Event-related potentials OT - N170 OT - Neural adaptation OT - P1 OT - P2 OT - Repetition suppression EDAT- 2015/03/10 06:00 MHDA- 2015/12/15 06:00 CRDT- 2015/03/10 06:00 PHST- 2014/10/21 00:00 [received] PHST- 2015/01/20 00:00 [revised] PHST- 2015/02/27 00:00 [accepted] PHST- 2015/03/10 06:00 [entrez] PHST- 2015/03/10 06:00 [pubmed] PHST- 2015/12/15 06:00 [medline] AID - S0167-8760(15)00107-5 [pii] AID - 10.1016/j.ijpsycho.2015.02.030 [doi] PST - ppublish SO - Int J Psychophysiol. 2015 Apr;96(1):8-15. doi: 10.1016/j.ijpsycho.2015.02.030. Epub 2015 Mar 5.