Neural basis for recognition confidence in younger and older adults.
Neural basis for recognition confidence in younger and older adults.
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DOI：
10.1037/a0014029
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发表时间：
2009-03
影响因子：
3.7
通讯作者：
Sperling, Reisa A.
中科院分区：
文献类型：
--
作者：
Chua, Elizabeth F.;Schacter, Daniel L.;Sperling, Reisa A.
虽然一些研究已经研究了客观记忆表现中与年龄相关的变化的神经基础，但对记忆监测过程如何随年龄变化所知甚少。我们使用功能磁共振成像检查回顾性的信心，在记忆性能老化。在低自信时，年轻人和老年人都表现出行为证据，表明他们在识别过程中猜测，并且他们在做出自信判断时意识到他们在猜测。同样，年轻人和老年人在低置信度反应时，外侧前额叶皮层、前扣带皮层和左侧顶内沟的神经活动都有所增加。相比之下，老年人比年轻人表现出更多的高置信度错误。年轻的成年人表现出更大的活动，高相比，低的信心，内侧颞叶结构，但老年人没有表现出这种模式。综上所述，这些发现可能表明，老年人记忆的置信度-准确性关系受损（通常由高置信度错误驱动）可能主要与神经信号改变有关，这些神经信号与高置信度反应的更大活动相关。
Although several studies have examined the neural basis for age-related changes in objective memory performance, less is known about how the process of memory monitoring changes with aging. We used fMRI to examine retrospective confidence in memory performance in aging. During low confidence, both younger and older adults showed behavioral evidence that they were guessing during recognition, and that they were aware they were guessing when making confidence judgments. Similarly, both younger and older adults showed increased neural activity during low compared to high confidence responses in lateral prefrontal cortex, anterior cingulate cortex, and left intraparietal sulcus. In contrast, older adults showed more high confidence errors than younger adults. Younger adults showed greater activity for high compared to low confidence in medial temporal lobe structures, but older adults did not show this pattern. Taken together, these findings may suggest that impairments in the confidence-accuracy relationship for memory in older adults, which are often driven by high confidence errors, may be primarily related to altered neural signals associated with greater activity for high confidence responses.
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影响因子：
2.4
作者：
Chalfonte, BL;Johnson, MK
通讯作者：
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作者：
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作者：
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通讯作者：
Sperling, RA
DOI：
10.1037/0278-7393.33.1.169
发表时间：
2007-01-01
影响因子：
2.6
作者：
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通讯作者：
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