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

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

Research output: Contribution to journalArticlepeer-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 languageEnglish (US)
Pages (from-to)56-60
Number of pages5
JournalNeuroscience Letters
Volume348
Issue number1
DOIs
StatePublished - Sep 4 2003

Keywords

  • Direction of motion
  • Motion perception
  • Perception of change
  • Time constants

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