Neural mechanisms underlying subsequent memory for personal beliefs:An fMRI study.
Neural mechanisms underlying subsequent memory for personal beliefs:An fMRI study.
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DOI：
10.3758/s13415-018-0563-y
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发表时间：
2018-04
期刊：
影响因子：
--
通讯作者：
Cabeza R
中科院分区：
文献类型：
--
作者：
Wing EA;Iyengar V;Hess TM;LaBar KS;Huettel SA;Cabeza R
Many fMRI studies have examined the neural mechanisms supporting emotional memory for stimuli that generate emotion rather automatically (e.g., a picture of a dangerous animal or of appetizing food). However, far fewer studies have examined how memory is influenced by emotion related to social and political issues (e.g., a proposal for large changes in taxation policy), which clearly vary across individuals. In order to investigate the neural substrates of affective and mnemonic processes associated with personal opinions, we employed an fMRI task wherein participants rated the intensity of agreement/disagreement to socio-political belief statements paired with neural face pictures. Following the rating phase, participants performed an associative recognition test in which they distinguished identical vs. recombined face-statement pairs. The study yielded three main findings: behaviorally, the intensity of agreement ratings was linked to greater subjective emotional arousal, as well as enhanced high-confidence subsequent memory. Neurally, statements that elicited strong (vs. weak) agreement or disagreement were associated with greater activation of the amygdala. Finally, a subsequent memory analysis showed that the behavioral memory advantage for statements generating stronger ratings was dependent on the medial prefrontal cortex (mPFC). Together, these results both underscore consistencies in neural systems supporting emotional arousal and suggest a modulation of arousal-related encoding mechanisms when emotion is contingent on referencing personal beliefs.
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