Abstract:
:Affective startle modulation in the electromyographic (EMG), auditory startle evoked potentials, and visually evoked potentials (VEPs) were assessed while subjects evaluated pleasant, unpleasant, and neutral adjectives. Acoustic startle probes were presented at random time points 2.5-4.0 s after word onset. The visual P2 and P3 potentials were generally larger during processing of emotional than of neutral adjectives. In contrast, the late positive component was enhanced and was correlated with larger EMG startle responses and auditory startle evoked potential P3 amplitudes for pleasant words only. During internal cognitive activity, the startle reflex represents a measure of "processing interrupt." Thus the startle tone interrupted processing of particularly pleasant adjectives and caused re-alerting to environmental stimuli. Specific effects for pleasant material may arise from a "positivity offset," favoring responses to pleasant material at lower arousal levels.
journal_name
Psychophysiologyjournal_title
Psychophysiologyauthors
Herbert C,Kissler J,Junghöfer M,Peyk P,Rockstroh Bdoi
10.1111/j.1469-8986.2006.00385.xsubject
Has Abstractpub_date
2006-03-01 00:00:00pages
197-206issue
2eissn
0048-5772issn
1540-5958pii
PSYP385journal_volume
43pub_type
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