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Results for “TIME PERCEPTION”

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At least 145 records · Page 8Linked to original sources
PubMed1999

Time perception following unilateral amobarbital injection in patients with temporal lobe epilepsy.

Estimates of elapsed time were obtained from 53 patients with unilateral temporal lobe epilepsy (Left TLE = 27; Right TLE = 26) following Wada (intracarotid amobarbital) assessment. After resolution of drug effects, patients were asked to estimate how much time had passed since amobarbital administration. Estimates were also obtained from 24 healthy control subjects using the same cognitive tasks over a similar time frame. Elapsed time was significantly underestimated by both left and right TLE groups following right hemisphere injection. In addition, there was an interaction effect involving patient group, side of injection, and sequence of injection. Left TLE patients, consistent with normal controls, made more accurate time estimates when they could anticipate the estimation task following the second amobarbital administration. More accurate time estimates, however, occurred only when left hemisphere injection was second in sequence. In contrast, right TLE patients did not improve regardless of the order of injection. These results suggest that right hemisphere function plays a critical role in the accuracy of time estimations of intermediate temporal duration and that interhemispheric interaction may be required to make accurate retrospective temporal judgments. These findings are discussed in the context of the growing evidence for a right-hemispheric attentional network.

Adult↗
PubMedDate not supplied

[Time perception (chronognosis) in mental disorders].

The study proposes an evaluation of one of the parameters of psychological time--the rhythm of time--established by simple experimental methods. 43 persons were studied. The results obtained show that there are differences between persons with psychopathological symptoms and healthy group.

Humans↗
PubMed1993

Body temperature influence on time perception.

The chemical clock hypothesis implies a causal link between body temperature and the perception of duration. A strict interpretation of this construct requires a common slope value in an Arrhenius plot that relates time to temperature for every individual tested. Previous studies testing this proposition have confirmed a general relationship for data summed across multiple subjects. However, the same studies raise doubts as to whether this relationship holds for each and every individual tested. Unfortunately, these investigations have been limited by methodological constraints, thus, one could argue that the strong isomorphism intrinsic to the chemical clock hypothesis has yet to be fairly tested. In the present experiment, I sought to distinguish the effects of selective head temperature changes on the estimation of duration. Nonlinear decreases in estimated duration were observed with ascending deep auditory canal temperature. These findings support the contention of a thermally stable region of temporal perception bounded by conditions in which temporal estimates directly depend on body temperature. In contradicting physiological adequacy as an explanatory construct, the present results suggest a direct relationship between time perception and the homeothermic platform. I compare these results with earlier findings concerning the chemical clock concept and examine respective discrepancies as a basis for a fuller understanding of a temporal phenomenon that is frequently referred to as the internal clock.

Adolescent↗
PubMedDate not supplied

Perception of time by human consciousness.

The paper presents a survey of 79 publications dedicated to tasks of chronobiology, to significance of studies of time perception by human consciousness, to ideas of the mechanisms of the time perception, of the role of sleep in regulation of temporal relations, techniques of studies of the time perception (including the Author's own), as well as the results of studying the perception of time intervals duration by humans and effects of environments and mental state on this perception; intuitive and logical estimations of the time properties are also considered.

Chronobiology Phenomena↗