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Comparison of chemosensory, auditory and visual event‐related potential amplitudes
Author(s) -
OLOFSSON JONAS K.,
ERICSSON EVA,
NORDIN STEVEN
Publication year - 2008
Publication title -
scandinavian journal of psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.743
H-Index - 72
eISSN - 1467-9450
pISSN - 0036-5564
DOI - 10.1111/j.1467-9450.2008.00647.x
Subject(s) - psychology , event related potential , auditory event , neuropsychology , audiology , auditory stimuli , neuroscience , auditory perception , visual perception , communication , cognitive psychology , electroencephalography , perception , cognition , medicine
To enhance understanding of neuropsychological processing underlying chemosensory event‐related potentials (CSERPs), the objective of the present study was to compare CSERPs with auditory (AERPs) and visual event‐related potentials (VERPs), and to approach the question of similarities in neuropsychological processing by means of correlation and cluster analyses. A multisensory ERP protocol was used, in which olfactory/chemosomatosensory (pyridine), auditory (1000‐Hz tone) and visual (white circle) stimuli were presented in a pseudo‐randomized sequence to 18 young, healthy adults. The results show (1) a morphological relation between P2 and P3 components that is different for the chemosensory than for the auditory and visual modalities, (2) a relatively weak association between the chemosensory and auditory/visual modalities for P3 in terms of both correlation and cluster, and (3) a P2/P3 cluster for the chemosensory but not auditory or visual modality. This supports the claim that the chemosensory P2 and P3 components reflect similar neuropsychological processes.