Patent
1977-02-23
1979-06-26
Grieb, William H.
G09B 1900
Patent
active
041589203
ABSTRACT:
A method and apparatus are presented for testing a human operator, and in particular a small child, for brain dysfunction, which method and apparatus require the human operator to perform a primary task which includes centering a spot of light on a reference point by rapidly moving a control stick back and forth. The primary task is provided by a Zero Input Tracking Analyzer (ZITA) unit that has no initial input and automatically nulls the operator's error, from his previous attempt to center the spot, with each subsequent attempt. In order to make more prominent any evidence of brain dysfunction, a secondary task is provided by an Auxiliary Distraction Task (ADT) unit which produces a "distraction stress" while the operator is carrying out the primary task. This task requires the human operator to respond to the stimuli of high or low tones, presented to him by headphones, by moving another control stick forward or backward for the high and low pitches, respectively. A common display/recorder is used to record the performance on both tasks. Brain dysfunctions, including brain seizures, epilepsy, and hyperactivity, is evidenced by a slowness in response to the tasks, or complete non-responsiveness, due to very short lapses of consciousness or attention, which are characteristic of brain dysfunction.
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Applications Manual for Philbrick Octal Plug-In Computing Amplifiers, GAP/R K2 Series, p. 12, Title page, .COPYRGT. 1956.
Zero Input Tracking Analyzer (ZITA Vb) and Auditory Discrimination Task (ADT Vb), Operating Instructions and Calibrations, Title Page, pp. i, ii, 1-13, Jul., 1971.
Linear Integrated Circuits, pp. i, ii and 2-4.
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