PMID- 26255255 OWN - NLM STAT- MEDLINE DCOM- 20160913 LR - 20151208 IS - 1872-7697 (Electronic) IS - 0167-8760 (Linking) VI - 98 IP - 3 Pt 1 DP - 2015 Dec TI - Trials and intensity effects in single-trial ERP components and autonomic responses in a dishabituation paradigm with very long ISIs. PG - 394-412 LID - S0167-8760(15)30018-0 [pii] LID - 10.1016/j.ijpsycho.2015.08.002 [doi] AB - The phasic orienting reflex (OR) was investigated using single-trial data collected concurrently from 4 autonomic measures and event-related potentials (ERPs). In an auditory dishabituation paradigm, twelve indifferent tones of two intensities (60 or 80 dB, intensity change on trial 11, counterbalanced between subjects) were presented at very long interstimulus intervals (ISIs). Novelty and intensity based stimulus-response patterns were examined seeking ERP analogues of autonomic measures representing pre-OR and OR processing. Skin conductance response (SCR) represented the phasic OR index. EOG-corrected ERP data for 16 subjects were decomposed by a temporal Principal Components Analysis (PCA). SCR diminished over 10 standard trials, recovered on change trial 11, dishabituated to the re-presentation of the standard tone on trial 12, and showed intensity effects at the change - formal requirements for an OR index. The evoked cardiac response (HR) showed no trial or intensity effects. Respiratory pause (RP) decreased linearly over trials and showed recovery but no dishabituation or intensity effect. Peripheral vasoconstriction (PVC) failed to decrement but exhibited an intensity effect. Ten identifiable ERP components were extracted: Na, P1, N1-1, PN, P2, P3a, P3b, a novelty-sensitive HabP3, an intensity-sensitive IntP3, and the Slow Wave (SW). Pattern 1 showed no trial or intensity effects (HR, P1, PN, P2); Pattern 2 showed no trial effect but an intensity effect (PVC, Na, N1-1, P3a); and Pattern 3 demonstrated habituation and an intensity effect (SCR, RP, P3b, HabP3, IntP3, SW). The observed fractionation of autonomic and central measures is consistent with Preliminary Process Theory (PPT) rather than the notion of a unitary OR. CI - Copyright (c) 2015 Elsevier B.V. All rights reserved. FAU - MacDonald, Brett AU - MacDonald B AD - Centre for Psychophysics, Psychophysiology, and Psychopharmacology, Brain & Behaviour Research Institute, School of Psychology, University of Wollongong, Wollongong 2522, Australia. Electronic address: bm12@uowmail.edu.au. FAU - Barry, Robert J AU - Barry RJ AD - Centre for Psychophysics, Psychophysiology, and Psychopharmacology, Brain & Behaviour Research Institute, School of Psychology, University of Wollongong, Wollongong 2522, Australia. FAU - Bonfield, Rebecca C AU - Bonfield RC AD - Centre for Psychophysics, Psychophysiology, and Psychopharmacology, Brain & Behaviour Research Institute, School of Psychology, University of Wollongong, Wollongong 2522, Australia. LA - eng PT - Journal Article DEP - 20150805 PL - Netherlands TA - Int J Psychophysiol JT - International journal of psychophysiology : official journal of the International Organization of Psychophysiology JID - 8406214 SB - IM MH - Acoustic Stimulation MH - Adolescent MH - Adult MH - Autonomic Nervous System/*physiology MH - Blood Pressure MH - *Brain Mapping MH - Electrocardiography MH - Electroencephalography MH - Evoked Potentials/*physiology MH - Female MH - Galvanic Skin Response MH - Habituation, Psychophysiologic/*physiology MH - Heart Rate/physiology MH - Humans MH - Male MH - Principal Component Analysis MH - Reaction Time/physiology MH - Respiration MH - Vasoconstriction/physiology MH - Young Adult OTO - NOTNLM OT - Dishabituation paradigm OT - Intensity OT - Orienting reflex (OR) OT - Principal Components Analysis OT - Single-trial ERPs OT - Skin conductance response EDAT- 2015/08/10 06:00 MHDA- 2016/09/14 06:00 CRDT- 2015/08/10 06:00 PHST- 2015/03/10 00:00 [received] PHST- 2015/08/04 00:00 [revised] PHST- 2015/08/04 00:00 [accepted] PHST- 2015/08/10 06:00 [entrez] PHST- 2015/08/10 06:00 [pubmed] PHST- 2016/09/14 06:00 [medline] AID - S0167-8760(15)30018-0 [pii] AID - 10.1016/j.ijpsycho.2015.08.002 [doi] PST - ppublish SO - Int J Psychophysiol. 2015 Dec;98(3 Pt 1):394-412. doi: 10.1016/j.ijpsycho.2015.08.002. Epub 2015 Aug 5.