ELECTROMYOGRAPHIC FACTORS IN AIRCRAFT CONTROL Muscular Tension in the Learning and Unlearning of a Simple-Choice Response

摘要

Three groups of 10 human Ss each were given 10, 20, and 30 acquisition trials, respectively, followed by 15 extinction trials for all Ss in an adaptation of Humphreys's guessing paradigm. Ss were given a low-pitched tone and told to press a key with the right hand immediately after the low tone if they guessed a second high-pitched tone would follow. Pressure of left-hand key indicated the high-pitched tone was not expected. In 80 percent of acquisition trials, the second tone (considered reinforcement) was given, while the second tone was never given during extinction. Muscular action po¬tential recordings (EMG) were taken from right and left arms, forehead, and left leg. Direction and time of key-press as well as duration of tones were also shown in the records