Abstract：
:The effects of responding hand and stimulus probability were investigated in young and old subjects in an RT task in which both rare and frequent stimuli required a response. It was found that the effect of stimulus probability was less pronounced in old subjects than in young, and that the latency of P3 was longer in the elderly, although their RTs were not different from young subjects. ERPs for right hand responses were larger than for left hand responses; this difference was discernible already in the P2 and N2 peaks of the ERP. A tentative explanation is offered for these large and unexpected hand differences. An interpretation in terms of an age-related decrease in resources is proposed for the increased P3 latency and the decreased probability effect on P3 amplitude in old subjects.
journal_name
Biol Psycholjournal_title
Biological psychologyauthors
Looren de Jong H,Kok A,Van Rooy JCdoi
10.1016/0301-0511(89)90034-3subject
Has Abstractpub_date
1989-10-01 00:00:00pages
125-48issue
2eissn
0301-0511issn
1873-6246journal_volume
29pub_type
杂志文章abstract：:In this study we measured event-related potentials (ERPs) and evoked heart rate (EHR) to investigate performance monitoring in 10-12-year-old children. The children received feedback on their performance while conducting a probabilistic learning task. Error-related ERP components time-locked to the response increased ...
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