N. P. PSYTAR. NOISE PROGRAMMED PSYCHOPHYSICAL TESTER AND RECORDER.
Defense Technical Information Center, 1961 - Psychology - 1 pages
A machine for automatically performing psychophysical experiments, known as N. P. Psytar, is described. N. P. Psytar is an electronic system that generates timing controls, makes random selections of signals for presentation to the observers (experimental subjects), and records the observers' answers. The system requirements, logic, block diagram design, and circuits are presented. (Author).
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ANSWER CORRECTNESS COUNTERS ANSWER CORRECTNESS RELAY ANSWER RECORD answer storage relay Arlington Hall Station ATTN Block diagram buffer amplifier capacitor cathode circuit is shown coincidence circuits coincidence warning Commanding Officer correct answer indicator correct answer storage CORRECTNESS RELAY SET correctness sensing relays counters and lights cuit data processing decade counter digit distribution counters driver flip-flop energized equally-likely experiment FRONT PANEL IBM card IBM machine IBM summary inhibitor INTERVAL 9 interval timer line should read lock-out circuit LOCK-OUT RELAYS master multivibrator N. P. Psytar OBSERVER ANSWER STORAGE observer's observers1 answers operated oscillator output pulse output thyratron probability control psychophysical record answer warning record his answer record-answer resistor ROMPAR run relay SET 1 OBSERVER shown in Fig signal presentation Simplified circuit Simplified schematic diagram spinning disk storage and lock-out tell the observer thru trial cycle counter trial warning University of Michigan voltage volts WARNING TONE Washington 25 wires YES-NO