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4 mai 2011 3 04 /05 /mai /2011 06:02

Here, younger and older adults performed a picture naming task in the fMRI scanner. Atlas successful naming, left insula activity was not affected by age or gray matter integrity. Age differences only emerged during TOTs, with younger but not older adults generating Bead bracelet "boost" of activity during TOTs compared to successful naming. Older adults also had less activity than younger adults during TOTs compared to "don't know" responses, and across all participants, less TOT activity was affiliated with lower gray matter density. For older adults, lower levels of activity during TOTs accompanied higher TOT rates, supporting the role of an age-related neural mechanism impacting older more Beads necklace younger adults. Results support a neural account of word retrieval in old age wherein, despite widespread age-related atrophy, word production processes are Black oynx Toggle necklace universally impacted by age.

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