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Titolo:
CORRELATION BETWEEN FRONTAL-LOBE FUNCTIONS AND EXPLICIT AND IMPLICIT STEM COMPLETION IN HEALTHY ELDERLY
Autore:
NYBERG L; WINOCUR G; MOSCOVITCH M;
Indirizzi:
BAYCREST CTR GERIATR CARE,ROTMAN RES INST,3560 BATHURST ST N YORK ON M6A 2E1 CANADA BAYCREST CTR GERIATR CARE,ROTMAN RES INST N YORK ON M6A 2E1 CANADA UMEA UNIV,DEPT PSYCHOL S-90187 UMEA SWEDEN UNIV TORONTO,DEPT PSYCHOL TORONTO ON M5S 1A1 CANADA UNIV TORONTO,DEPT PSYCHIAT TORONTO ON M5S 1A1 CANADA TRENT UNIV,DEPT PSYCHOL PETERBOROUGH ON K9J 7B8 CANADA UNIV TORONTO,ERINDALE COLL,DEPT PSYCHOL MISSISSAUGA ON L5L 1C6 CANADA
Titolo Testata:
Neuropsychology
fascicolo: 1, volume: 11, anno: 1997,
pagine: 70 - 76
SICI:
0894-4105(1997)11:1<70:CBFFAE>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
MEMORY-SYSTEMS; NORMAL HUMANS; DISSOCIATION; ACTIVATION; AGE; TASKS; MODEL;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Science Citation Index Expanded
Citazioni:
34
Recensione:
Indirizzi per estratti:
Citazione:
L. Nyberg et al., "CORRELATION BETWEEN FRONTAL-LOBE FUNCTIONS AND EXPLICIT AND IMPLICIT STEM COMPLETION IN HEALTHY ELDERLY", Neuropsychology, 11(1), 1997, pp. 70-76

Abstract

The authors investigated the relationship between performance on neuropsychological tests, which were sensitive to medial-temporal and frontal lobe function, and implicit and explicit stem completion in a group of healthy elderly participants (mean age = 77.3 years). Several stem-completion conditions varying in the size of the search space and the specificity of the cues were included. Across conditions, performance on a frontal lobe sensitive test (word fluency) and on medial-temporal tests (California Verbal Learning Test; delayed recall) correlated with explicit stem completion. The correlations between frontal and medial-temporal test performance and implicit stem completion were weaker However, a relationship was observed between frontal lobe functioning and stem completion when (a) the search space was large and the cueswere constrained and (b) when the search space was limited and the cues were relatively unconstrained. Therefore, the role of the frontal lobes in implicit stem completion seems to be to detect bias resulting from prior study, and this involvement can only be revealed when the interaction between the size of the search space and the retrieval cues(a) makes bias detection necessary and (b) allows it to play a role. The stronger involvement of the frontal lobes in explicit stem completion likely reflects strategic retrieval processes, and the medial-temporal lobe involvement may be related to verification processes.

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Documento generato il 11/07/20 alle ore 10:54:23