Time constants in the perception of a change in the direction of motion in humans

John F. Soechting; Leigh A. Mrotek; Martha Flanders

doi:10.1016/S0304-3940(03)00712-2

Time constants in the perception of a change in the direction of motion in humans

John F. Soechting, Leigh A. Mrotek, Martha Flanders

Neuroscience

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Motion signals are subject to spatio-temporal filtering at early stages of processing. In general, motion can be characterized by two parameters: speed and direction. This study sought to determine the time constants for the filtering of the directional component of the motion signal. In a forced-choice discrimination task, subjects were asked to choose the more abrupt change in direction of a target that moved through two 90° corners. At each corner, direction of motion was low-pass filtered. Subjects were able to reliably perform this task if the filter time constants differed by >20 ms.

Original language	English (US)
Pages (from-to)	56-60
Number of pages	5
Journal	Neuroscience Letters
Volume	348
Issue number	1
DOIs	https://doi.org/10.1016/S0304-3940(03)00712-2
State	Published - Sep 4 2003

Bibliographical note

Funding Information:
This work was supported by NIH grant EY-13704. LAM was supported by NSF-IGERT training grant 9870633.

Keywords

Direction of motion
Motion perception
Perception of change
Time constants

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10.1016/S0304-3940(03)00712-2

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abstract = "Motion signals are subject to spatio-temporal filtering at early stages of processing. In general, motion can be characterized by two parameters: speed and direction. This study sought to determine the time constants for the filtering of the directional component of the motion signal. In a forced-choice discrimination task, subjects were asked to choose the more abrupt change in direction of a target that moved through two 90° corners. At each corner, direction of motion was low-pass filtered. Subjects were able to reliably perform this task if the filter time constants differed by >20 ms.",

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AU - Mrotek, Leigh A.

AU - Flanders, Martha

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AB - Motion signals are subject to spatio-temporal filtering at early stages of processing. In general, motion can be characterized by two parameters: speed and direction. This study sought to determine the time constants for the filtering of the directional component of the motion signal. In a forced-choice discrimination task, subjects were asked to choose the more abrupt change in direction of a target that moved through two 90° corners. At each corner, direction of motion was low-pass filtered. Subjects were able to reliably perform this task if the filter time constants differed by >20 ms.

KW - Direction of motion

KW - Motion perception

KW - Perception of change

KW - Time constants

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Time constants in the perception of a change in the direction of motion in humans

Abstract

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