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Research article summary:
Trajectory forms as a source of information about events.
Abstract Extract:
The ability to use trajectory forms as visual information about events was tested. A trajectory form is defined as the variation in velocity along a path of motion. In Experiment 1, we tested the ability to detect trajectory form differences between ... (Full abstract text below) Published 2002Jan
in Journal: Percept Psychophys
(Language : eng)
Full Pubmed Extract
This information was retrieved, real-time, on your behalf from the public area of the Pubmed website:
1. Percept Psychophys.
2002 Jan;64(1):15-31
Trajectory forms as a source of information about events.
Muchisky MM, Bingham GP
Indiana University, Bloomington 47405, USA.
The ability to use trajectory forms as visual information about events was tested. A trajectory form is defined as the variation in velocity along a path of motion. In Experiment 1, we tested the ability to detect trajectory form differences between simulations of a freely swinging pendulum and a hand-moved pendulum. The trajectory form of the freely swinging pendulum was symmetric around the mid-point, whereas the hand moved was not. In Experiment 2, we isolated trajectory form information by varying the amplitudes of events while holding their periods constant. Straight path versions of the harmonic events from Experiment 1 were tested. In Experiment 3, we tested sensitivity to symmetrical peakening or flattening of trajectory forms. Participants detected small differences in all three experiments. In Experiment 4, we tested the ability to identify specific events based only on differences in trajectory forms. Participants were able to identify four different events. We investigated properties of trajectory forms that might potentially be detected and used as information, and we found that the curvature yielded good results.
PMID : 11916299 [PubMed - Indexed for MEDLINE]
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Full Author Information
| First Name | LastName | Initials |
| Michael M | Muchisky | MM |
| Geoffrey P | Bingham | GP |
Affiliation: Indiana University, Bloomington 47405, USA.
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