Abstract:
:The spatiotemporal dynamics of the hedonic response to chocolate images was investigated in healthy participants high and low in trait-chocolate craving employing high-density ERPs. There were two sessions: (1) before and (2) after satiety for chocolate. Among cravers, chocolate stimuli evoked a positive amplitude ERP enhancement over the anterior frontal scalp (250-350 ms) that was not modified by satiety and that source localized to the left lateral orbitofrontal cortex. Chocolate stimuli also elicited a later LPP over the posterior scalp (360-560 ms) which was of similar amplitude for high and low chocolate cravers, independent of satiety. Unexpectedly, in non-cravers, chocolate stimuli elicited an earlier (100-250 ms) negative ERP modulation over the frontomedial scalp, which disappeared after eating chocolate to satiety. These results confirm the role of OFC in unrestrained appetitive responses to chocolate in cravers, and suggest top-down influences from cognitive control mechanisms when attempting to restrain the urge to eat chocolate in non-cravers.
journal_name
Appetitejournal_title
Appetiteauthors
Asmaro D,Jaspers-Fayer F,Sramko V,Taake I,Carolan P,Liotti Mdoi
10.1016/j.appet.2012.01.030subject
Has Abstractpub_date
2012-06-01 00:00:00pages
790-9issue
3eissn
0195-6663issn
1095-8304pii
S0195-6663(12)00031-1journal_volume
58pub_type
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