Journal
JOURNAL OF PSYCHOPHYSIOLOGY
Volume 29, Issue 4, Pages 135-146Publisher
HOGREFE & HUBER PUBLISHERS
DOI: 10.1027/0269-8803/a000145
Keywords
emotional reactivity; visual attention; prefrontal cortex; ERP; DIPFIT; independent component clustering
Categories
Funding
- National Science Centre [UMO-2011/01/D/HS6/00450]
Ask authors/readers for more resources
In the study, the neural basis of emotional reactivity was investigated. Reactivity was operationalized as the impact of emotional pictures on the self-reported ongoing affective state. It was used to divide the subjects into high-and low-responders groups. Independent sources of brain activity were identified, localized with the DIPFIT method, and clustered across subjects to analyse the visual evoked potentials to affective pictures. Four of the identified clusters revealed effects of reactivity. The earliest two started about 120 ms from the stimulus onset and were located in the occipital lobe and the right temporoparietal junction. Another two with a latency of 200 ms were found in the orbitofrontal and the right dorsolateral cortices. Additionally, differences in pre-stimulus alpha level over the visual cortex were observed between the groups. The attentional modulation of perceptual processes is proposed as an early source of emotional reactivity, which forms an automatic mechanism of affective control. The role of top-down processes in affective appraisal and, finally, the experience of ongoing emotional states is also discussed.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available