Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Comparison of the spatial-frequency selectivity of local and global motion detectors

Not Accessible

Your library or personal account may give you access

Abstract

Convergent physiological and behavioral evidence indicates that the initial receptive fields responsible for motion detection are spatially localized. Consequently, the perception of global patterns of movement (such as expansion) requires that the output of these local mechanisms be integrated across visual space. We have differentiated local and global motion processes, with mixtures of coherent and incoherent moving patterns composed of bandpass filtered dots, and have measured their spatial-frequency selectivity. We report that local motion detectors show narrow-band spatial-frequency tuning (i.e., they respond only to a narrow range of spatial frequencies) but that global motion detectors show broadband spatial-frequency tuning (i.e., they integrate across a broad range of spatial frequencies), with a preference for low spatial frequencies.

© 2002 Optical Society of America

Full Article  |  PDF Article
More Like This
Detection of relative and uniform motion

Satoshi Shioiri, Sadanori Ito, Kentaro Sakurai, and Hirohisa Yaguchi
J. Opt. Soc. Am. A 19(11) 2169-2179 (2002)

Psychophysical evidence for a functional hierarchy of motion processing mechanisms

Peter J. Bex, Andrew B. Metha, and Walter Makous
J. Opt. Soc. Am. A 15(4) 769-776 (1998)

Resolution of complex motion detectors in the central and peripheral visual field

Peter J. Bex and Helle K. Falkenberg
J. Opt. Soc. Am. A 23(7) 1598-1607 (2006)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (6)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (2)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved