Gruzelier J, Sergeant J, Eves F
Department of Psychiatry, Charing Cross and Westminster Medical School, London, U.K.
Int J Psychophysiol. 1988 Aug;6(3):195-205. doi: 10.1016/0167-8760(88)90005-0.
In three experiments the importance of behavioural consequences as a determinant of the amplitude of the electrodermal response is demonstrated. Bilateral skin conductance responses were examined to same-different stimuli consisting of moderate intensity tones differing in pitch (S1, S2), to a response cue to make a unimanual button-press if the stimulation were judged the same (S3), and to feedback (S4). In the first two experiments in which a right-hand action was required, responses were larger to S2 than S1 on 'response', compared with 'no-response' trials. This was replicated in the second experiment where the same effect was also found to S3. In the third experiment the hand performing the action was varied; the influence of stimulus consequences on responses to S2 was replicated when the right hand performed the action; when the left hand was involved elevated responses to S2 occurred, irrespective of the perceptual judgement. In all experiments responses tended to be larger on trials where a correct judgement was made. The use of bilateral recording with a unilateral behavioural response confirmed the influence of effector functions on electrodermal responses. Hemispheric influences were contralateral and excitatory. The results were discussed in terms of multiple central determinants on electrodermal responses, the influence of cerebral laterality, and of sympathetic-somatic coupling.
在三项实验中，证明了行为后果作为皮肤电反应幅度决定因素的重要性。对由音高不同的中等强度音调组成的相同-不同刺激（S1、S2）、对如果判断刺激相同则进行单手按键的反应提示（S3）以及对反馈（S4），检查了双侧皮肤电导反应。在前两项需要右手动作的实验中，与“无反应”试验相比，在“反应”试验中对S2的反应比对S1的反应更大。这在第二项实验中得到了重复，在该实验中对S3也发现了相同的效果。在第三项实验中，执行动作的手有所不同；当右手执行动作时，刺激后果对S2反应的影响得到了重复；当涉及左手时，无论感知判断如何，对S2的反应都会增强。在所有实验中，正确判断的试验中反应往往更大。使用单侧行为反应的双侧记录证实了效应器功能对皮肤电反应的影响。半球影响是对侧且具有兴奋性。根据对皮肤电反应的多个中枢决定因素、大脑偏侧性的影响以及交感-躯体耦合对结果进行了讨论。
