Minamoto, T., Osaka, M., Engle, R. W., & Osaka, N.
Title:
Incidental encoding of goal-irrelevant information is associated with
insufficient engagement of the dorsal frontal cortex and the inferior
parietal cortex.
Journal:
Brain Research
doi:
10.1016/j.brainres.2011.10.034
論文URL:
http://www.journals.elsevier.com/brain-research/
Abstract:
Previous studies have shown that goal-irrelevant distractors are
incidentally encoded into long-term memory. Neuroimaging studies have
suggested that the medial temporal and visual association regions are
involved in incidental encoding of goal-irrelevant information. However,
few studies have investigated prefrontal/parietal influence during the
incidental encoding. The present study performed whole brain analysis to
identify the brain regions involved in the incidental encoding of
goal-irrelevant information. A face working memory (WM) task was
administered with insertion of face distractors during the delay period.
Following the WM task, a surprise recognition task was given in an MRI
scanner. Recognition rate of distractors was higher than that of novel
fillers. Recognition time was also faster in distractors than in novel
fillers. Neuroimaging results showed less activation to distractors
subsequently remembered than those forgotten in the middle and superior
frontal regions and the lateral inferior parietal lobe including the
angular gyrus and the temporoparietal regions. However, the left
anterior hippocampus and the right fusiform gyrus showed greater
activation to distractors subsequently remembered. Those findings
suggest that insufficient engagement of the dorsal frontal cortex which
regulates attentional control and the inferior parietal lobe which
functions to reorient attention may allow goal-irrelevant information
access to working memory and to be encoded into long-term memory.
著者Contact先の email:
nosaka@bun.kyoto-u.ac.jp
- 投稿タグ
- IntJnlPaper
