Tactile spatial resolution. I. Two-point discrimination, gap detection, grating resolution, and letter recognition

1981 ◽  
Vol 46 (6) ◽  
pp. 1177-1192 ◽  
Author(s):  
K. O. Johnson ◽  
J. R. Phillips
Keyword(s):  
Spatial Resolution ◽  
Letter Recognition ◽  
Gap Detection ◽  
Tactile Spatial Resolution

Relationship between tactile spatial resolution and digital dexterity during childhood

2010 ◽  
Vol 27 (1) ◽  
pp. 9-14 ◽  
Author(s):  
Yannick Bleyenheuft ◽  
Pauline Wilmotte ◽  
Jean-Louis Thonnard
Keyword(s):  
Spatial Resolution ◽  
Tactile Spatial Resolution

Tactile spatial resolution in blind Braille readers

Neurology ◽  
2000 ◽  
Vol 55 (10) ◽  
pp. 1597-1597 ◽  
Author(s):  
J. R. Ponsford ◽  
R. W. Van Boven
Keyword(s):  
Spatial Resolution ◽  
Tactile Spatial Resolution

Age-related changes in tactile spatial resolution from 6 to 16 years old

2006 ◽  
Vol 23 (3-4) ◽  
pp. 83-87 ◽  
Author(s):  
Yannick Bleyenheuft ◽  
Caroline Cols ◽  
Carlyne Arnould ◽  
Jean-Louis Thonnard
Keyword(s):  
Spatial Resolution ◽  
Age Related ◽  
Tactile Spatial Resolution ◽  
Age Related Changes

Tactile spatial resolution measured manually: A validation study

2007 ◽  
Vol 24 (3) ◽  
pp. 111-114 ◽  
Author(s):  
Yannick Bleyenheuft ◽  
Jean-Louis Thonnard
Keyword(s):  
Spatial Resolution ◽  
Validation Study ◽  
Tactile Spatial Resolution

The Two-Point Threshold

2000 ◽  
Vol 9 (1) ◽  
pp. 29-32 ◽  
Author(s):  
James C. Craig ◽  
Kenneth O. Johnson
Keyword(s):  
Spatial Resolution ◽  
Neural Mechanisms ◽  
Valid Measure ◽  
New Methods ◽  
Spatial Mechanisms ◽  
Extreme Variability ◽  
Compass Test ◽  
Tactile Spatial Resolution

The two-point threshold, or compass test, has long been used as a measure of tactile spatial resolution; however, since it was first developed, there have been problems associated with its use. Some of these problems include setting an appropriate criterion for responding “two,” extreme variability both within and between subjects, and the ability of subjects to discriminate two points from one at separations well below the two-point threshold. Recent neurophysiological results have clarified some of the neural mechanisms responsible for spatial resolution and demonstrated the inadequacy of the two-point threshold as a measure of spatial mechanisms. Several new methods may overcome these problems and provide a valid measure of spatial resolution and a reflection of neural mechanisms.

scholarly journals Mugs and Plants: Object Semantic Knowledge Alters Perceptual Processing with Behavioral Ramifications

2021 ◽  
Author(s):  
Dick Dubbelde ◽  
Sarah Shomstein
Keyword(s):  
Spatial Resolution ◽  
Discrimination Task ◽  
Temporal Discrimination ◽  
Red Light ◽  
Semantic Knowledge ◽  
Detection Task ◽  
Perceptual Processing ◽  
Gap Detection ◽  
Behavioral Differences ◽  
Manipulable Object

Abstract Neural processing of objects with action associations is thought to recruit dorsal visual regions more than objects without such associations. We hypothesized that because the dorsal and ventral visual pathways have differing proportions of magno- and parvo-cellular input, there should be behavioral differences in perceptual tasks between manipulable and non-manipulable objects. This hypothesis was tested using gap detection task, suited to the spatial resolution of the ventral parvocellular processing, and object flicker discrimination task, suited to the temporal resolution of the dorsal magnocellular processing. Directly predicted from the cellular composition of each pathway, a non-manipulable object advantage was observed in tasks relying on spatial resolution, and a manipulable object advantage in temporal discrimination. We also show that these relative advantages are modulated by either reducing object recognition through inversion or by suppressing magnocellular processing using red light. These results establish perceptual differences between objects dependent on prior knowledge and experience.

Tactile spatial resolution in blind Braille readers11EDITED BY THOMAS J. LIESEGANG, MD

2000 ◽  
Vol 130 (4) ◽  
pp. 542 ◽  
Author(s):  
R.W. Van Boven ◽  
R.H. Hamilton ◽  
T. Kauffman ◽  
J.P. Keenan ◽  
A. Pascual-Leone
Keyword(s):  
Spatial Resolution ◽  
Tactile Spatial Resolution
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