Abstract:
:A visual Simon task was used to study the influence of aging on visuospatial attention and inhibitory control processes. Responses were much slower for elderly than for young participants. The delay in trials in which stimulus and response side did not correspond as compared to when they did correspond (the Simon effect) was larger for older people, even after correcting for general slowing due to aging. The slowing of responses reflected a slowing of internal processing, as indicated by progressively larger delays of the peak latencies of the N1, the posterior contralateral negativity (PCN), and P3. A comparison between the amplitudes of the PCN and early lateralized readiness potential (pre-LRP) indicated that transmission from posterior sites (PCN) to the motor cortex may be affected by age. The data support the view that aging affects an inhibitory process that controls direct visuomotor transmission.
journal_name
Psychophysiologyjournal_title
Psychophysiologyauthors
van der Lubbe RH,Verleger Rdoi
10.1017/S0048577202001221subject
Has Abstractpub_date
2002-01-01 00:00:00pages
100-10issue
1eissn
0048-5772issn
1540-5958pii
S0048577202001221journal_volume
39pub_type
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