Veränderungen der Zeitbeurteilung im Alter

 

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 Zusammenfassung

Anliegen Veränderungen der Zeitwahrnehmung mit dem Alter werden allgemein angenommen, ohne dass dies bisher mit objektiven Verfahren gezeigt wurde. Methode Computergestützte Messung von Zeitschätzung, -produktion und -reproduktion bei 33 gesunden Probanden aller Altersklassen; Kontrollen der Aufmerksamkeit durch den Trail-Making-Test. Ergebnisse Geschätzte und reproduzierte Zeitintervalle vergrößern sich mit dem Alter (Zeitüberschätzung) und sind in unterschiedlicher Weise von Aufmerksamkeit und Arbeitsgedächtnis abhängig. Schlussfolgerungen Das Phänomen der „fliegenden Zeit” kann als Störung der Zeitreproduktion verstanden werden.

Abstract

Objective Time perception can be divided into two processes: time experience and time judgement. Although there have been frequent reports of changes in these two processes with increasing age, none of these changes has been demonstrated using objective measures. Methods We evaluated time judgement by employing time estimation, time production, and time reproduction tasks in 33 healthy subjects of all age groups. In addition, we used the Trail-Making Test to measure attentional performance. Results For both time estimation and time reproduction, we found positive correlations between length of time interval and age (overestimation). After we calculated partial correlations controlling for the results of the Trail-Making Test, the age-related changes we initially observed in the time estimation task disappeared, but the age-related changes seen in the time reproduction task remained significant. Conclusions Considering the Scalar Timing Theory and the Attentional Gate Theory, our findings indicated that age-related effects on time estimation may be due to attentional factors. In contrast, the age-related changes seen in the time reproduction task may be due to disturbances in working memory function.

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Dr. med. Richard Mahlberg

Klinikum am Europakanal, Klinik für Psychiatrie, Sucht, Psychotherapie und Psychosomatik

Am Europakanal 71

91056 Erlangen

Email: dr.richard.mahlberg@bezirkskliniken-mfr.de