AUTONOMIC ACTIVITY AND BRAIN POTENTIALS ASSOCIATED WITH "VOLUNTARY" CONTROL OF THE PILOMOTORS (MM. ARRECTORES PILORUM)
AUTONOMIC ACTIVITY AND BRAIN POTENTIALS ASSOCIATED WITH "VOLUNTARY" CONTROL OF THE PILOMOTORS (MM. ARRECTORES PILORUM)
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与“自愿”控制 PILOMOTORS (MM. ARRECTORES PILORUM) 相关的自主活动和大脑潜力
DOI：
10.1152/jn.1938.1.4.342
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发表时间：
1938
期刊：
影响因子：
--
通讯作者：
W. H. Sassaman
中科院分区：
文献类型：
--
作者：
D. Lindsley;W. H. Sassaman
方法以18帧/秒的测量速度，对前臂背表面、大腿外侧表面和膝盖以下腿前表面的毛发竖起进行16毫米运动影像记录。类似的瞳孔扩张的记录，发生在“%自愿”的毛发勃起过程中，当眼睛被500瓦的泛光灯照射在角膜前表面约45度角时。眼睛的注视总是保持在15英尺外的一点上。实验人员的手在相机镜头前的快速动作，作为受试者开始竖起毛发的信号；重复同样的动作意味着放下头发。运动落在视野的边缘，没有拦截关注的线。该研究的其他方面使用的信号包括耳机中几乎听不见的“舔”声和昏暗灯光的“闪烁”。每种情况下的对照实验都表明，所观察到的效应都不是由信号本身的刺激值引起的。同时记录电现象，如心电图和皮肤电位，或脑电位从头部表面的两个区域，是通过两个独立的放大和记录系统完成的。放大器为电阻-容量耦合型，前置放大器采用平衡输入电路。通过改变级间耦合能力（0.1、0.5或2.0 mfd），可以使放大器的时间常数适合于要记录的特定类型的现象。一个带有匹配元件的pa型西屋示波器作为记录单元。用于记录呼吸和血压变化的机械装置包含在示波器外壳中，以便如果需要，可以在同一记录上同时记录所有现象。血液压力的持续变化
METHODSSixteen millimeter motion picture records, at a measured speed of 18 frames per second, were made of the erection of the hair on the dorsal surface of the forearm, the lateral surface of the thigh, and the anterior surface of the leg just below the knee. Similar records of the dilatation of the pupil, which occurs during‘% oluntary” erection of the hair, were made while the eye was illuminated by a 500 watt flood lamp at an angle of approximately 45’to the anterior surface of the cornea. Fixation of the eyes was always maintained on a point 15 feet away. A quick movement of the experimenter’s hand before the lens of the camera marked the film and served as a signal for the subject to begin the erection of the hair; the same movement repeated meant to lower the hair. The movement fell on the periphery of the visual field and did not intercept the line of regard. The signals used in other aspects of the study consisted of a barely audible% lick” in a headphone and the “flash” of a dim light. Control experiments in every case indicated that none of the effects observed was due to the stimulus value of the signals themselves. Simultaneous recording of electrical phenomena, such as the electrocardiogram and skin potentials, or brain potentials from two regions on the surface of the head, was accomplished by means of two independent amplifying and recording systems. The amplifiers are of the resistance-capacity coupled type, with pre-amplifiers employing balanced input circuits. The time-constant of the amplifiers may be made appropriate to the particular type of phenomena to be recorded by changing the inter-stage coupling capacity (0.1, 0.5, or 2.0 mfd.). A type-PA Westinghouse oscillograph with matched elements served as the recording unit. The mechanical devices for recording respiration and changes in blood pressure are incorporated in the oscillograph case so that all phenomena may be recorded simultaneously on the same record if desired. Continuous changes in blood pres-