Orienting in schizophrenia: habituation to auditory stimuli of constant and varying intensity in patients high and low in skin conductance responsivity.
Orienting in schizophrenia: habituation to auditory stimuli of constant and varying intensity in patients high and low in skin conductance responsivity.
复制标题
精神分裂症的定向：皮肤电导反应性高和低的患者对恒定和变化强度的听觉刺激的习惯。
作者：
A. Ohman;H. Nordby;G. D'elia
精神分裂症组和正常对照组分别暴露于不同系列的恒定（80 dB）和可变强度（60，80和100 dB）的音调。测量包括双侧皮肤电导、手指脉搏量和心率。两组在对恒定强度音调的皮肤电导反应的共同中值上被分开，以形成低反应性和高反应性的匹配的患者组和对照组。低反应和高反应精神分裂症组比两个对照组的自发皮肤电导波动率，皮肤电导幅度和皮肤电导水平，更清楚地分开，主要是因为在高反应患者的全身多动。这种模式对于最强烈的音调和左手录音是最清晰的。高反应性精神分裂症患者也表现出较大的反应幅度，较短的上升和恢复时间，和一个较小的比率引起自发反应，比高反应性控制。从左手记录的手指脉搏容积反应在患者组中较小，而患者和对照组在右手记录中没有差异。高皮肤电导反应的受试者比低反应的受试者表现出更多的心率减速，精神分裂症患者比对照组有更多的减速反应。
Groups of schizophrenics and normal controls were exposed to different series of tones of constant (80dB) and variable intensity (60, 80, and 100 dB). Measurements included bilateral skin conductance, finger pulse volume, and heart rate. Both groups were split on the common median in skin conductance response to constant intensity tones to form matched patient and control groups of low and high responsivity. The low and high responsive schizophrenic groups were more clearly separated than the two control groups in rate of spontaneous skin conductance fluctuations, skin conductance magnitudes, and skin conductance levels, primarily because of generalized hyperactivity in high responsive patients. This pattern was clearest for the most intense tone and left hand recordings. High responsive schizophrenics also showed larger response amplitudes, shorter rise and recovery times, and a smaller ratio of elicited to spontaneous responses, than high responsive controls. Finger pulse volume responses recorded from the left hand were smaller in the patient groups, whereas patients and controls did not differ in right hand recordings. High skin conductance responsive subjects showed more heart rate deceleration than low responsive subjects, and schizophrenics had more decelerative responses than controls.