Brain responses to emotional images related to cognitive ability in older adults.
Brain responses to emotional images related to cognitive ability in older adults.
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DOI：
10.1037/a0030928
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发表时间：
2013-03
影响因子：
3.7
通讯作者：
Kisley, Michael A.
中科院分区：
文献类型：
--
作者：
Foster, Shannon M.;Davis, Hasker P.;Kisley, Michael A.
老年人在处理情绪刺激时表现出积极效应，似乎更关注积极信息而不是消极信息。这是否反映了有目的的变化或认知能力下降的意外副作用尚不清楚。在本研究中，老年人表现出广泛的认知能力，完成了注意力，视觉和口头记忆，执行功能和处理速度的措施，以及时间观念的社会情感措施。回归分析研究了这些变量预测神经反应的能力，以选择情绪刺激，测量与晚正电位（LPP），事件相关的脑电位（ERP）。更强的认知功能与对负面图像的更高LPP振幅相关（即，更大的处理）。这并不支持老年人在这种特定的注意力分配措施中自愿避免负面信息处理。提出了一个模型，以调和这一发现与现存的文献，已经证明了积极的影响，后来的措施，控制注意力分配。
Older adults have been shown to exhibit a positivity effect in processing of emotional stimuli, seemingly focusing more on positive than negative information. Whether this reflects purposeful changes or an unintended side-effect of declining cognitive abilities is unclear. For the present study older adults displaying a wide range of cognitive abilities completed measures of attention, visual and verbal memory, executive functioning, and processing speed, as well as a socioemotional measure of time perspective. Regression analyses examined the ability of these variables to predict neural responsivity to select emotional stimuli as measured with the late positive potential (LPP), an event-related brain potential (ERP). Stronger cognitive functioning was associated with higher LPP amplitude in response to negative images (i.e., greater processing). This does not support a voluntary avoidance of negative information processing in older adults for this particular measure of attentional allocation. A model is proposed to reconcile this finding with the extant literature that has demonstrated positivity effects in measures of later, controlled attentional allocation.
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