Research article summary:

Minimum displacement thresholds for binocular three-dimensional motion.

Abstract Extract:
Thresholds for the detection of motion in depth in the median plane of the head are substantially poorer than those for motion in the frontoparallel plane. This suggests the existence of two independent mechanisms for their detection. Any ... (Full abstract text below)

Published 2002Mar in Journal: Vision Res (Language : eng)

Full Pubmed Extract

This information was retrieved, real-time, on your behalf from the public area of the Pubmed website:

1. Vision Res. 2002 Mar;42(6):715-24

Minimum displacement thresholds for binocular three-dimensional motion.

Sumnall JH, Harris JM

Department of Psychology, Ridley Building, University of Newcastle, Necastle upon Tyne NE1 7RU, UK. sumnalljh@cardiff.ac.uk

Thresholds for the detection of motion in depth in the median plane of the head are substantially poorer than those for motion in the frontoparallel plane. This suggests the existence of two independent mechanisms for their detection. Any three-dimensional (3-D) motion can be decomposed into components of motion in the frontoparallel plane and in the median plane of the head. Can human performance for the detection and discrimination of other 3-D motions be predicted by a combination of responses from the two independent mechanisms? Minimum displacement thresholds (d(min)) for the detection of 3-D motion and the direction discrimination of 3-D motion were measured for a wide range of 3-D directions. d(min) data were modelled in terms of the probability summation of a pair of independent motion mechanisms, one responding to motion in the median plane of the head, the second to motion in the frontoparallel plane. Detection of 3-D motion was well predicted by probability summation across a range of 3-D directions. Direction discrimination of 3-D motion was similarly well fit by the probability summation model for multiframe motion displays for some observers. However for two-frame motion displays, direction discrimination for 3-D motion was best fit by a model using only a motion mechanism in the frontoparallel plane. Detection and direction discrimination thresholds for 3-D motion can therefore be explained on the basis of one or two mechanisms, sensitive to motion in the frontoparallel plane and in the median plane of the head.

PMID : 11888537 [PubMed - Indexed for MEDLINE]

This information is obtained from the National Library of Medicine (NLM). Abstract text and other information may be subject to copyright. Type "NLM copyright" into Google for more information.

Full Author Information

First Name	LastName	Initials
Jane H	Sumnall	JH
Julie M	Harris	JM

Affiliation: Department of Psychology, Ridley Building, University of Newcastle, Necastle upon Tyne NE1 7RU, UK. sumnalljh@cardiff.ac.uk

3rd Party provider links

Click the links below to go to related 3rd party information:

MESH categories and related page links

This article was linked to the MESH categories shown on the left below. The links on the right are related Memletics pages.

Links for this article

For links to places where you can get the full text of this article see links. Note there may be a subscription or fee required for access to the full text.

New! Using similar technology to this site, we have launched find-health-articles.com, targeting over 1 million health research article abstracts.

Here are some articles related to this one (by title keywords):

Integration of motion information during binocular rivalry.

Evidence for perceptual 'trapping' and adaptation in multistable binocular rivalry.

The effect of pupil size on binocular summation at suprathreshold conditions.

Early binocular vision in human infants: limitations on the generality of the Superposition Hypothesis.

Cross-validation of the NCAA method to predict body fat for minimum weight in collegiate wrestlers.

Binocular summation of chromatic changes as measured by visual reaction time.

Bayesian modeling of cue interaction: bistability in stereoscopic slant perception.

Adaptation of reflexive feedback during arm posture to different environments.

Visual depth encoding in populations of neurons with localized receptive fields.

Reading a population code: a multi-scale neural model for representing binocular disparity.

>>> Get more research article abstracts like these, or browse abstracts.

Keywords in this article:

across, basis, best, combination, components, data, decomposed, depth, detection, dimensional, direction, directions, discrimination, displacement, displays, existence, explained, fit, frontoparallel, head, human, independent, measured, mechanisms, median, minimum, modelled, motion, motions, multiframe, observers, only, other, pair, performance, plane, poorer, predicted, probability, range, responding, responses, second, sensitive, similarly, substantially, suggests, summation, terms, three, thresholds, two, well, wide

Also, see our new free speed reading online course (beta version)