Baez-Lugo, Sebastian;
Deza-Araujo, Yacila I;
Maradan, Christel;
Collette, Fabienne;
Lutz, Antoine;
Marchant, Natalie L;
Chételat, Gaël;
... Wirth, Miranka; + view all
(2023)
Exposure to negative socio-emotional events induces sustained alteration of resting-state brain networks in older adults.
Nature Aging
, 3
pp. 105-120.
10.1038/s43587-022-00341-6.
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Abstract
Basic emotional functions seem well preserved in older adults. However, their reactivity to and recovery from socially negative events remain poorly characterized. To address this, we designed a ‘task–rest’ paradigm in which 182 participants from two independent experiments underwent functional magnetic resonance imaging while exposed to socio-emotional videos. Experiment 1 (N = 55) validated the task in young and older participants and unveiled age-dependent effects on brain activity and connectivity that predominated in resting periods after (rather than during) negative social scenes. Crucially, emotional elicitation potentiated subsequent resting-state connectivity between default mode network and amygdala exclusively in older adults. Experiment 2 replicated these results in a large older adult cohort (N = 127) and additionally showed that emotion-driven changes in posterior default mode network–amygdala connectivity were associated with anxiety, rumination and negative thoughts. These findings uncover the neural dynamics of empathy-related functions in older adults and help understand its relationship to poor social stress recovery.
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