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Title
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Apparatus For Presentation And Continuous Measurement Of Error In A Two-dimensional Compensatory Tracking Task
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Date
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1954
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Index Abstract
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Online
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Photo Quality
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Complete
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Report Number
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WADC TR 54-335
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Corporate Author
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Washington University, Dept. Of Psychology, Biomechanics Laboratory
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Laboratory
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Aero Medical Laboratory
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Extent
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29
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PB Number
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PB111672
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NTRL Accession Number
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AD057389
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Identifier
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AD0057389
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Access Rights
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Unknown
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Distribution Classification
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1
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DTIC Record Exists
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No
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Distribution Change Authority Correspondence
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AFAL LTR
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Distribution Conflict
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Fix
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Index Price
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$1.00
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Abstract
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An electronic compensatory-tracking apparatus which utilizes a two-dimensional target is described together with its computing and recording circuits. The apparatus was designed to provide a standard task of variable difficulty for use in the study of attention. The target path used approximates the equation Q = cos 2(theta). This is a four-leafed rose curve. The stimulus spot is displayed on the face of a cathode ray oscilloscope (CRO). Control is exercised by the subject through manipulation of a joy stick of very low mass and friction. Subject error, represented by the displacement of the stimulus spot from the intersection of a pair of crosshairs on the CRO screen corresponds to (x^2+y^2)^0.5 where x and y are the input voltages to the CRO. The quantity (x^2+y^2)^0.5 is computed continually by the electronic analog computer and recorded as both a function of time and as an integrated error score.
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Report Availability
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Full text available
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Date Issued
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1954-12
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Provenance
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Bearcat
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Hunt Library, Embry-Riddle Aeronautical University
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Type
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report
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Format
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1 online resource
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Creator
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McGuire, James C.
WADCTR54-335.pdf