国際ジャーナルへの論文掲載情報
Authors:
Osaka,M.,Yaoi,K., Otsuka, Y., Katsuhara, M., & Osaka, N
Title:
Practice on conflict tasks promotes executive function of working memory
in the elderly.
Journal:
Behavioural Brain Research
doi:
10.1016/j.bbr.2012.04.044
論文URL:
http://www.journals.elsevier.com/behavioural-brain-research/
Abstract:
Effects of practice on a conflict task in elderly individuals are
examined with a focus on its impact on executive function in working
memory. During a short-term practice period, healthy elderly
participants practiced switching attention using a Stroop task that
involved a conflict between a task relevant stimulus and an irrelevant
stimulus. To explore neural substrates underlying practice effects, two
working memory tasks were used: a focus reading span test (F-RST) and a
non-focus reading span test (NF-RST); the NF-RST test demanded greater
switching attention due to a conflict between the relevant task stimulus
and an irrelevant task stimulus, thus requiring an attention switch from
the latter to the former. Following the Stroop task practice, fMRI data
showed that participants who had engaged in practice had significant
increases in activation in the anterior cingulate cortex (ACC), the left
inferior parietal lobule (IPL), the left dorsolateral prefrontal cortex
(DLPFC) and the precuneus regions during the NF-RST. By contrast, a
control group, which did not practice, showed no significant increases
in these regions. Results suggest that practice on conflict tasks in
elderly individuals activated regions related to conflict perceiving and
attention switching regions as well as attention-maintenance regions
thereby improving performance on tasks requiring a high degree of
attention control of working memory.
著者Contact先の email:
mosaka@hus.osaka-u.ac.jp
Osaka,M.,Yaoi,K., Otsuka, Y., Katsuhara, M., & Osaka, N
Title:
Practice on conflict tasks promotes executive function of working memory
in the elderly.
Journal:
Behavioural Brain Research
doi:
10.1016/j.bbr.2012.04.044
論文URL:
http://www.journals.elsevier.com/behavioural-brain-research/
Abstract:
Effects of practice on a conflict task in elderly individuals are
examined with a focus on its impact on executive function in working
memory. During a short-term practice period, healthy elderly
participants practiced switching attention using a Stroop task that
involved a conflict between a task relevant stimulus and an irrelevant
stimulus. To explore neural substrates underlying practice effects, two
working memory tasks were used: a focus reading span test (F-RST) and a
non-focus reading span test (NF-RST); the NF-RST test demanded greater
switching attention due to a conflict between the relevant task stimulus
and an irrelevant task stimulus, thus requiring an attention switch from
the latter to the former. Following the Stroop task practice, fMRI data
showed that participants who had engaged in practice had significant
increases in activation in the anterior cingulate cortex (ACC), the left
inferior parietal lobule (IPL), the left dorsolateral prefrontal cortex
(DLPFC) and the precuneus regions during the NF-RST. By contrast, a
control group, which did not practice, showed no significant increases
in these regions. Results suggest that practice on conflict tasks in
elderly individuals activated regions related to conflict perceiving and
attention switching regions as well as attention-maintenance regions
thereby improving performance on tasks requiring a high degree of
attention control of working memory.
著者Contact先の email:
mosaka@hus.osaka-u.ac.jp
