Show simple item record

dc.contributor.authorChang, Chia-Jung
dc.contributor.authorJazayeri, Mehrdad
dc.date.accessioned2018-12-12T17:28:06Z
dc.date.available2018-12-12T17:28:06Z
dc.date.issued2018-03
dc.identifier.issn0027-8424
dc.identifier.issn1091-6490
dc.identifier.urihttp://hdl.handle.net/1721.1/119619
dc.description.abstractTo coordinate movements with events in a dynamic environment the brain has to anticipate when those events occur. A classic example is the estimation of time to contact (TTC), that is, when an object reaches a target. It is thought that TTC is estimated from kinematic variables. For example, a tennis player might use an estimate of distance (d) and speed (v) to estimate TTC (TTC = d/v). However, the tennis player may instead estimate TTC as twice the time it takes for the ball to move from the serve line to the net line. This latter strategy does not rely on kinematics and instead computes TTC solely from temporal cues. Which of these two strategies do humans use to estimate TTC? Considering that both speed and time estimates are inherently uncertain and the ability of the human brain to combine different sources of information, we hypothesized that humans estimate TTC by integrating speed information with temporal cues. We evaluated this hypothesis systematically using psychophysics and Bayesian modeling. Results indicated that humans rely on both speed information and temporal cues and integrate them to optimize their TTC estimates when both cues are present. These findings suggest that the brain's timing mechanisms are actively engaged when interacting with dynamic stimuli.en_US
dc.publisherProceedings of the National Academy of Sciencesen_US
dc.relation.isversionofhttp://dx.doi.org/10.1073/PNAS.1713316115en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourcePNASen_US
dc.titleIntegration of speed and time for estimating time to contacten_US
dc.typeArticleen_US
dc.identifier.citationChang, Chia-Jung, and Mehrdad Jazayeri. “Integration of Speed and Time for Estimating Time to Contact.” Proceedings of the National Academy of Sciences 115, no. 12 (March 5, 2018): E2879–E2887.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Brain and Cognitive Sciencesen_US
dc.contributor.mitauthorChang, Chia-Jung
dc.contributor.mitauthorJazayeri, Mehrdad
dc.relation.journalProceedings of the National Academy of Sciencesen_US
dc.eprint.versionFinal published versionen_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2018-12-03T21:17:59Z
dspace.orderedauthorsChang, Chia-Jung; Jazayeri, Mehrdaden_US
dspace.embargo.termsNen_US
dc.identifier.orcidhttps://orcid.org/0000-0003-0766-403X
mit.licensePUBLISHER_POLICYen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record