Abstract
The aim of this study was to assess whether spontaneous interindividual variations in arousal level appreciated by telemetric recordings of physiological variables were related to mental performance and functional ability in institutionalized aged subjects. The sample studied was made up of 18 subjects (16 women and 2 men) aged 82-97, living in an old age home in Paris. Telemetric recordings of EEG, EKG, EMG and EOG were obtained over 8-hour periods, during the subjects' normal daily activity schedule. The Stockton Geriatric Rating Scale (SGRS), Benton's Visual Retention Test (VRT) and the Trail Making Test (TMT) were independently used to assess behaviour and mental performance of these aged persons. All correlations between telemetric data and psychological evaluations (the psychometric tests as well as the rating scale) were highly significant, even once the influence of the cultural level was controlled.
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