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An adaptive drift-diffusion model of interval timing dynamics
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Luzardo, Andre, Ludvig, Elliot Andrew and Rivest, François (2013) An adaptive drift-diffusion model of interval timing dynamics. Behavioural Processes, Volume 95 . pp. 90-99. doi:10.1016/j.beproc.2013.02.003 ISSN 0376-6357.
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Official URL: http://dx.doi.org/10.1016/j.beproc.2013.02.003
Abstract
Animals readily learn the timing between salient events. They can even adapt their timed responding to rapidly changing intervals, sometimes as quickly as a single trial. Recently, drift-diffusion models—widely used to model response times in decision making—have been extended with new learning rules that allow them to accommodate steady-state interval timing, including scalar timing and timescale invariance. These time-adaptive drift-diffusion models (TDDMs) work by accumulating evidence of elapsing time through their drift rate, thereby encoding the to-be-timed interval. One outstanding challenge for these models lies in the dynamics of interval timing—when the to-be-timed intervals are non-stationary. On these schedules, animals often fail to exhibit strict timescale invariance, as expected by the TDDMs and most other timing models. Here, we introduce a simple extension to these TDDMs, where the response threshold is a linear function of the observed event rate. This new model compares favorably against the basic TDDMs and the multiple-time-scale (MTS) habituation model when evaluated against three published datasets on timing dynamics in pigeons. Our results suggest that the threshold for triggering responding in interval timing changes as a function of recent intervals.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | B Philosophy. Psychology. Religion > BF Psychology Q Science > QA Mathematics |
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| Divisions: | Faculty of Science, Engineering and Medicine > Science > Psychology | ||||
| Library of Congress Subject Headings (LCSH): | Time perception in animals, Pigeons -- Behavior, Dynamics, Psychology, Comparative | ||||
| Journal or Publication Title: | Behavioural Processes | ||||
| Publisher: | Elsevier BV | ||||
| ISSN: | 0376-6357 | ||||
| Official Date: | May 2013 | ||||
| Dates: |
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| Volume: | Volume 95 | ||||
| Page Range: | pp. 90-99 | ||||
| DOI: | 10.1016/j.beproc.2013.02.003 | ||||
| Status: | Peer Reviewed | ||||
| Publication Status: | Published | ||||
| Access rights to Published version: | Restricted or Subscription Access | ||||
| Funder: | Royal Military College of Canada (RMC), Emerging Leaders in the Americas Program (Canada) (ELAP), National Institutes of Health (U.S.) (NIH), Princeton University. Princeton Pyne Fund | ||||
| Grant number: | AG024361 (NIH) |
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