28th International Congress of Psychology August 8 ... - U-netSURF

measures of fit when our focus should be on specific components of the model.
5058 INVITED SYMPOSIUM
Time perception in humans
Convener and Chair: A.D. Eisler, Sweden
5058.1 Preparing attention for discriminating temporal intervals, S. Grondin, Université Laval,
Laval, Québec, Canada
It is well known that time estimates are closely related to the involvement of attentional
mechanisms. It is mostly attention to time during a given interval that has been shown to influence
temporal estimates. Even distracting events occurring just after the interval to be judged influence
time perception. In the series of experiments presented here, it is the period preceding the interval
to be judged, rather than the one following it, that is shown to affect time perception: longer
foreperiods result in longer perceived duration. Furthermore, it is argued that foreperiods modulate
attention mechanisms necessary for processing temporal information.
5058.2 Comparison and discrimination of short and long durations, Å. Hellström, Stockholm
University, Stockholm, Sweden
When two successive durations, or other stimuli, are compared, they exert differential impacts on
the comparison outcome, as is shown by discrimination measures and time-order error patterns.
The perceived difference can be modelled as occurring between two weighted compounds, each
formed by one stimulus and its reference level. This mechanism seems to serve to maximize
discriminability. The weighting pattern then mirrors the amount of available information about
each stimulus, and thereby how this information is processed. In comparisons of short durations,
stimulus interference dominates. For longer durations, forgetting is more important; weight sizes
and discriminability are affected by cognitive deterioration.
5058.3 Distance and location processes in memory for time: An update, C. Bastin 1 , W.J.
Friedman 2 , 1 University of Liège, Belgium; 2 Oberlin College, Ohio, USA
Memory for times of past events depends on direct impressions of the temporal distances of the
events in the past and the reconstruction of temporal locations. Two studies shed light on the
possible neurological basis of location-based processes. In an ERP study, adults performed tasks
thought to bias subjects to use distance or location processes. Late frontal activity was specifically
linked to location-based processes. In another study using the same tasks, aging was found to
disrupt location-based processes more than distance-based processes. Age-related differences in
the use of location-based processes were mediated by speed of processing and by
working-memory capacities.
5058.4 Effects of music generalized complexity, hedonic value and tonal modulation on
subjective time estimation, J. L. Bueno, Universidade de São Paulo, Brazil
More generalized complexity (information, familiarity, violations of expectancy) and more
hedonic value (ionian mode) of music excerpts generate greater subjective duration estimations
(measured by the method of reproduction) than less ones. Tonal changes occurring only in the
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