Large receptive fields for optic flow detection in humans

David C. Burr, M. Concetta Morrone, Lucia M. Vaina

Research output: Contribution to journalArticle

82 Citations (Scopus)

Abstract

We used a psychophysical summation technique to study the properties of detectors tuned to radial, circular and translational motion, and to determine the spatial extent of their receptive fields. Signal-to-noise motion thresholds were measured for patterns curtailed spatially in various ways. Sensitivity for radial, circular and translational motion increased with stimulus area at a rate predicted by an ideal integrator. When sectors of noise were added to the stimulus, sensitivity decreased at a rate consistent with an ideal integrator. Summation was tested for large annular stimuli, and shown to hold up to 70°in some cases, suggesting very large receptive fields for this type of motion (consistent with the physiology of neurones in the dorsal region of the medial superior temporal area (MSTd)). This is a far greater area than observed for summation of contrast sensitivity to gratings and to this type of stimuli consistent with the suggestion that the two techniques examine different levels of motion analysis.

Original languageEnglish
Pages (from-to)1731-1743
Number of pages13
JournalVision Research
Volume38
Issue number12
DOIs
Publication statusPublished - Jun 1998

Fingerprint

Optic Flow
Noise
Contrast Sensitivity
Neurons

Keywords

  • Heading
  • Motion
  • Optic flow
  • Receptive fields
  • Summation

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems

Cite this

Large receptive fields for optic flow detection in humans. / Burr, David C.; Concetta Morrone, M.; Vaina, Lucia M.

In: Vision Research, Vol. 38, No. 12, 06.1998, p. 1731-1743.

Research output: Contribution to journalArticle

Burr, David C. ; Concetta Morrone, M. ; Vaina, Lucia M. / Large receptive fields for optic flow detection in humans. In: Vision Research. 1998 ; Vol. 38, No. 12. pp. 1731-1743.
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