Behavioral estimates of absolute threshold in rat
Behavioral estimates of absolute threshold in rat
复制标题
大鼠绝对阈值的行为估计
作者：
C. Muñoz Tedó;P. Herreros de Tejada;D. G. Green
摘要用行为学方法测定了白化病大鼠和有色大鼠的暗适应阈值。白化病和有色大鼠谁被剥夺了水学习酒吧按水加固时，光刺激。绝对阈值被定义为光刺激的存在显著改变压杆行为的光强度。白化病大鼠的平均阈值为−5.23 log cd/m2，有色大鼠的阈值为−5.0 log cd/m2。这些数值接近-5.3 log cd/m2，这是人类观察者在同一仪器中的心理物理阈值。与我们早期的电生理学一致，这些行为实验没有提供白化病/色素敏感性差异的证据。比较了白化病大鼠和有色大鼠的绝对阈值的行为学和电生理学测定。行为学上的确定与来自视觉诱发电位的结果非常一致。
Abstract Dark-adapted thresholds of albino and pigmented rats were estimated using behavioral methods. Albino and pigmented rats who had been water deprived learned to bar press for water reinforcement when a light stimulus was presented. Absolute threshold was defined to be the light intensity at which bar pressing behavior was significantly modified by the presence of the light stimulus. Albino rats had an average threshold of −5.23 log cd/m2 and the pigmented rats had a threshold of −5.0 log cd/m2. These values are close to −5.3 log cd/m2, the psychophysical threshold of human observers in the same apparatus. Consistent with our earlier electrophysiology, these behavioral experiments provide no evidence for an albino/pigmented sensitivity difference. Comparisons are made between behavioral and electrophysiological determinations of absolute threshold in albino and pigmented rats. Thresholds determined behaviorally agree remarkably well with those derived from visual evoked potentials.
白化啮齿动物的暗适应阈值升高。
影响因子：
4.4
作者：
Balkema,GW
通讯作者：
Balkema,GW