McLean P D, Milne L G
Percept Mot Skills. 1975 Apr;40(2):487-93. doi: 10.2466/pms.1975.40.2.487.
Ss with a strong fear of snakes were taught to increase and decrease their skin resistance during practice sessions with a continuous visual display. Ss were not aware that they were increasing or decreasing their levels of skin resistance and attempted only to influence the magnitude of the multimeter display, the polarity of which was controlled by the experimenter. The study used a within-subjects reversal design to investigate whether bidirectional control could be acquired over skin resistance level. To investigate whether this acquired control could affect the magnitude of elicited pre-conditioned autonomic responses, a pre- and post-training comparison was made between the GSRs elicited during test sessions in which Ss viewed slides of snakes while attempting to influence their electrodermal activity with the assistance of the visual display. The results suggest that Ss are able to acquire voluntarily bidirectional control of their level of skin resistance with continuous visual feedback and that this control can either depress or facilitate the magnitude of pre-conditioned emotional responses as a function of visual feedback.
对蛇有强烈恐惧的受试者在练习过程中，通过持续的视觉显示，学习增加和降低他们的皮肤电阻。受试者并不知道他们在增加或降低皮肤电阻水平，只是试图影响万用表显示的数值，而万用表显示数值的极性由实验者控制。该研究采用被试内反转设计，以调查是否可以对皮肤电阻水平获得双向控制。为了研究这种获得的控制是否会影响诱发的条件性自主反应的大小，在测试环节中，让受试者观看蛇的幻灯片，同时试图借助视觉显示来影响他们的皮肤电活动，并在训练前后对所诱发的皮肤电反应进行了比较。结果表明，受试者能够在持续视觉反馈的情况下，自愿获得对其皮肤电阻水平的双向控制，并且这种控制可以根据视觉反馈，抑制或促进条件性情绪反应的大小。
