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Repetitive exposure: brain and reflex measures of emotion and attention.
- Source :
-
Psychophysiology [Psychophysiology] 2011 Apr; Vol. 48 (4), pp. 515-22. - Publication Year :
- 2011
-
Abstract
- Effects of massed repetition on the modulation of the late positive potential elicited during affective picture viewing were investigated in two experiments. Despite a difference in the number of repetitions across studies (from 5 to 30), results were quite similar: The late positive potential continued to be enhanced when participants viewed emotional, compared to neutral, pictures. On the other hand, massed repetition did prompt a reduction in the late positive potential that was most pronounced for emotional pictures. Startle probe P3 amplitude generally increased with repetition, suggesting diminished attention allocation to repeated pictures. The blink reflex, however, continued to be modulated by hedonic valence, despite massive massed repetition. Taken together, the data suggest that the amplitude of the late positive potential during picture viewing reflects both motivational significance and attention allocation.<br /> (Copyright © 2010 Society for Psychophysiological Research.)
- Subjects :
- Acoustic Stimulation
Adult
Blinking physiology
Data Interpretation, Statistical
Electroencephalography
Electromyography
Event-Related Potentials, P300 physiology
Evoked Potentials physiology
Female
Fixation, Ocular physiology
Humans
Male
Reflex, Startle physiology
Young Adult
Attention physiology
Brain physiology
Emotions physiology
Reflex physiology
Subjects
Details
- Language :
- English
- ISSN :
- 1540-5958
- Volume :
- 48
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Psychophysiology
- Publication Type :
- Academic Journal
- Accession number :
- 20701711
- Full Text :
- https://doi.org/10.1111/j.1469-8986.2010.01083.x