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Titolo:
Old age is associated with a pattern of relatively intact and relatively impaired task-set switching abilities
Autore:
Meiran, N; Gotler, A; Perlman, A;
Indirizzi:
Ben Gurion Univ Negev, Dept Behav Sci, IL-84105 Beer Sheva, Israel Ben Gurion Univ Negev Beer Sheva Israel IL-84105 4105 Beer Sheva, Israel Ben Gurion Univ Negev, Zlotowski Ctr Neurosci, IL-84105 Beer Sheva, IsraelBen Gurion Univ Negev Beer Sheva Israel IL-84105 4105 Beer Sheva, Israel
Titolo Testata:
JOURNALS OF GERONTOLOGY SERIES B-PSYCHOLOGICAL SCIENCES AND SOCIAL SCIENCES
fascicolo: 2, volume: 56, anno: 2001,
pagine: P88 - P102
SICI:
1079-5014(200103)56:2<P88:OAIAWA>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
FRONTAL-LOBE DAMAGE; SELECTIVE ATTENTION; PARKINSONS-DISEASE; SIMILARITIES; MECHANISMS; MEMORY; COSTS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Social & Behavioral Sciences
Life Sciences
Citazioni:
53
Recensione:
Indirizzi per estratti:
Indirizzo: Meiran, N Ben Gurion Univ Negev, Dept Behav Sci, IL-84105 Beer Sheva, Israel Ben Gurion Univ Negev Beer Sheva Israel IL-84105 Sheva, Israel
Citazione:
N. Meiran et al., "Old age is associated with a pattern of relatively intact and relatively impaired task-set switching abilities", J GERONT B, 56(2), 2001, pp. P88-P102

Abstract

In three experiments, we examined the effects of old age on the reaction time (RT) decrement associated with task alternation. Old age was associatedwith increased miring-cost, which is the RT difference between two conditions: mired-task, where trials involving two tasks were intermixed, and single-task, where all the trials involved the same task. Old age was also associated with an increased switching-cost, which is the RT difference betweentrials in which the task was just changed and trials in which it was repeated. There was also indication of a slowed passive dissipation of task set adopted in the preceding trial. In contrast to these impairments, old age was also associated with an almost intact ability to prepare for an upcomingtask switch. This ability was indicated by a normal reduction in switching-cost due to an increase in the time allowed to prepare for the switch. We discuss the implications of the results in relation to theories of task-switching and to the underlying brain mechanisms, especially with respect to the effect of old age on the prefrontal cortex.

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Documento generato il 11/07/20 alle ore 16:25:51