Decreased neural specialization in old adults on a working memory task.
Compelling evidence shows that there is decreased neural specialization in the ventral visual cortex in older adults under passive viewing conditions. We assessed whether such specialization would be maintained on a working memory task and whether decreased specialization co-occurred with increased prefrontal activations. Participants encoded three faces or houses and maintained the set across an 8-s interval. Results provided evidence for less specialization of faces and houses in older adults than in younger adults, while the middle and inferior frontal cortex showed increased activation in elders compared with the young.
Department of Psychology, The Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.
Doris
D
Payer
Christy
C
Marshuetz
Brad
B
Sutton
Andy
A
Hebrank
Robert C
RC
Welsh
Denise C
DC
Park
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003627:Data Interpretation, Statistical; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008570:Memory, Short-Term / Q000502:physiology*; D008875:Middle Aged; D009415:Nerve Net / Q000502:physiology; D009474:Neurons / Q000502:physiology*; D010775:Photic Stimulation; D017397:Prefrontal Cortex / Q000166:cytology / Q000502:physiology; D011597:Psychomotor Performance / Q000502:physiology; D014793:Visual Cortex / Q000166:cytology / Q000502:physiology