Voice/voice band data discrimination apparatus

1995 ◽  
Vol 97 (2) ◽  
pp. 1364-1364
Author(s):  
Kazuo Saito
Keyword(s):  
Discrimination Apparatus

scholarly journals Behavioral evaluation of visual function of rats using a visual discrimination apparatus

2007 ◽  
Vol 162 (1-2) ◽  
pp. 84-90 ◽  
Author(s):  
Biju B. Thomas ◽  
Deedar M. Samant ◽  
Magdalene J. Seiler ◽  
Robert B. Aramant ◽  
Sharzad Sheikholeslami ◽  
...  
Keyword(s):  
Visual Function ◽  
Visual Discrimination ◽  
Discrimination Apparatus

Visual Discrimination Learning in Rats with Lesions of Superior Colliculus: Door-Push and Approach Errors in Modified Jumping Stand

1981 ◽  
Vol 33 (3b) ◽  
pp. 141-157 ◽  
Author(s):  
Paul Dean ◽  
Sian G. Pope
Keyword(s):  
Eye Movements ◽  
Superior Colliculus ◽  
Open Field ◽  
Discrimination Learning ◽  
Visual Discrimination ◽  
Visual Discrimination Learning ◽  
Central Platform ◽  
Area Centralis ◽  
Scanning Head ◽  
Discrimination Apparatus

It has been suggested that, for some species, lesions of the superior colliculus affect visual discrimination learning, but only in certain conditions: (a) when problems are first learnt only after operation, or (b) when discriminanda require detailed scanning, or (c) when “approach” responses to the discriminanda are measured, rather than the response of actually touching them. These suggestions were examined in rats learning visual discriminations in a modified jumping-stand apparatus, after sustaining large lesions of the superior colliculus (and in some cases also of the pretectum). The lesions produced open-field hyperactivity and reduced exploration, indicating effective tectal damage, but the rats learnt a series of difficult discriminations in a door-push task as fast as normal rats, and they did not make more approach errors. Their main abnormality in the discrimination apparatus was that they looked less often between the stimulus doors before stepping across to one of them from the central platform. It is suggested that in rats, as in other animals, lesions of the superior colliculus disrupt the control of scanning head and eye movements; in rats, however, such disruption need not affect discrimination learning (at least in some kinds of apparatus), possibly because the retina of the rat has a relatively poorly developed area centralis.

scholarly journals Ankle Instability Effects on Joint Position Sense When Stepping Across the Active Movement Extent Discrimination Apparatus

2012 ◽  
Vol 47 (6) ◽  
pp. 627-634 ◽  
Author(s):  
Jeremy Witchalls ◽  
Gordon Waddington ◽  
Peter Blanch ◽  
Roger Adams
Keyword(s):  
Clinical Laboratory ◽  
Ankle Instability ◽  
Position Sense ◽  
Joint Position Sense ◽  
Active Movement ◽  
Joint Position ◽  
Repeated Testing ◽  
Functional Ankle Instability ◽  
Angle Variation ◽  
Discrimination Apparatus

Context Individuals with and without functional ankle instability have been tested for deficits in lower limb proprioception with varied results. Objective To determine whether a new protocol for testing participants' joint position sense during stepping is reliable and can detect differences between participants with unstable and stable ankles. Design Descriptive laboratory study. Setting University clinical laboratory. Patients or Other Participants Sample of convenience involving 21 young adult university students and staff. Ankle stability was categorized by score on the Cumberland Ankle Instability Tool; 13 had functional ankle instability, 8 had healthy ankles. Intervention(s) Test-retest of ankle joint position sense when stepping onto and across the Active Movement Extent Discrimination Apparatus twice, separated by an interim test, standing still on the apparatus and moving only 1 ankle into inversion. Main Outcome Measure(s) Difference in scores between groups with stable and unstable ankles and between test repeats. Results Participants with unstable ankles were worse at differentiating between inversion angles underfoot in both testing protocols. On repeated testing with the stepping protocol, performance of the group with unstable ankles was improved (Cohen d = 1.06, P = .006), whereas scores in the stable ankle group did not change in the second test (Cohen d = 0.04, P = .899). Despite this improvement, the unstable group remained worse at differentiating inversion angles on the stepping retest (Cohen d = 0.99, P = .020). Conclusions The deficits on proprioceptive tests shown by individuals with functional ankle instability improved with repeated exposure to the test situation. The learning effect may be the result of systematic exposure to ankle-angle variation that led to movement-specific learning or increased confidence when stepping across the apparatus.

An Inexpensive Discrimination Apparatus for Classroom Use with Pigeons

1968 ◽  
Vol 18 (3) ◽  
pp. 369-372 ◽  
Author(s):  
Richard D. Millar ◽  
Richard W. Malott
Keyword(s):  
Discrimination Apparatus ◽  
Classroom Use

A Multipurpose Discrimination Apparatus for General Laboratory Use

1960 ◽  
Vol 6 (2) ◽  
pp. 222-222 ◽  
Author(s):  
Neil D. Kent ◽  
D. W. Tyler
Keyword(s):  
Discrimination Apparatus
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