Reaction time as a diagnostic measure in senility.

Reaction time as a diagnostic measure in senility. Research Abstract Details 

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Reaction time as a diagnostic measure in senility. Abstract Text:

Both simple and disjunctive reaction times (RT) are known to slow with aging but there is a paucity of information on RT changes in senility. Since disjunctive RT involves cognition in addition to the sensory-motor speed and attentional components of simple RT, it was hypothesized that disjunctive RT would be a reliable index of age-related mental decline. To test this prediction, simple and disjunctive RT were measured in matched groups of 20 normal and 20 cognitively impaired elderly. Simple RT was slower in the senile patients than in the normal subjects, but this difference was accounted for by differences in disjunctive RT. The senile patients showed a much larger performance decrement with respect to disjunctive RT than did the normal subjects--a difference which was not accounted for by differences in simple RT. In a discriminant function analysis, disjunctive RT alone correctly identified the senile patients and the normal subjects with 86% accuracy. Thus, this measure proved to be a reliable index of age-related mental decline. Preliminary data indicate that disjunctive RT slowing is correlated with non-memory mental decline, and that poor performance is related to the need for care and supervision.

Reaction time as a diagnostic measure in senility. Publishing Authors By Initials

For similar psychological phenomena and processes: mental processes: perception: visual perception research abstracts see: psychological phenomena and processes: mental processes: perception: visual perception research

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Reaction time as a diagnostic measure in senility. Journal Published:

PUBLICATION TYPE: Research Support, U.S. Gov't,

Journal: Journal of the American Geriatrics Society

VOLUME: 24

Page Numbers: 529-33

Journal Abbreviation: J Am Geriatr Soc

ISSN: 0002-8614

DAY: 10

MONTH: Dec

YEAR: 1976

Reaction time as a diagnostic measure in senility. Information

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LANGUAGE: eng

NlmUniqueID: 7503062

Reaction time as a diagnostic measure in senility. Keywords Mesh Terms:

KEYWORDS: Visual Perception

MESH TERMS: diagnosis

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Country: UNITED STATES

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MEDLINETA: J Am Geriatr Soc

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