Craving love? Enduring grief activates brain's reward center.

TitleCraving love? Enduring grief activates brain's reward center.
Publication TypeJournal Article
Year of Publication2008
AuthorsO'Connor, M-F, Wellisch DK, Stanton AL, Eisenberger NI, Irwin MR, Lieberman MD
JournalNeuroImage
Volume42
Issue2
Pagination969-72
Date Published2008 Aug 15
ISSN1095-9572
KeywordsAdaptation, Physiological, Adaptation, Psychological, Adult, Brain, Grief, Humans, Male, Reward, Task Performance and Analysis
Abstract

Complicated Grief (CG) occurs when an individual experiences prolonged, unabated grief. The neural mechanisms distinguishing CG from Noncomplicated Grief (NCG) are unclear, but hypothesized mechanisms include both pain-related activity (related to the social pain of loss) and reward-related activity (related to attachment behavior). Bereaved women (11 CG, 12 NCG) participated in an event-related functional magnetic resonance imaging scan, during grief elicitation with idiographic stimuli. Analyses revealed that whereas both CG and NCG participants showed pain-related neural activity in response to reminders of the deceased, only those with CG showed reward-related activity in the nucleus accumbens (NA). This NA cluster was positively correlated with self-reported yearning, but not with time since death, participant age, or positive/negative affect. This study supports the hypothesis that attachment activates reward pathways. For those with CG, reminders of the deceased still activate neural reward activity, which may interfere with adapting to the loss in the present.

DOI10.1111/j.1399-5618.2011.00969.x
Alternate JournalNeuroimage