Development and habituation of the heart rate orienting response to auditory and visual stimuli in the rat.
Development and habituation of the heart rate orienting response to auditory and visual stimuli in the rat.
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大鼠对听觉和视觉刺激的心率定向反应的发展和习惯。
DOI：
10.1037/h0077756
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发表时间：
1981
期刊：
影响因子：
--
通讯作者：
Campbell,BA
中科院分区：
文献类型：
--
作者：
Haroutunian,V;Campbell,BA
通过使用心率 (HR) 的变化作为指示反应 (Exp I)，研究了 120 只 8-19 天大的 Sprague-Dawley 幼犬对声音和视觉刺激的反应性的发展和习惯化。声音心率（白噪音）的变化首先发生在 14-25 天龄左右，并且本质上是加速的。 3 天内，HR 反应方向转变为心动过缓。对光的 HR 反应的特点是幼仔（14 天）出现心动过速，随着幼仔成熟（16 天及以上），这种情况转变为心动过缓。在实验 II 中，研究了 15 日龄和 19 日龄 Ss 在 3 种听觉刺激强度（60、70 和 90 db，B 级）下的 HR 反应。刺激强度影响 19 日龄幼仔的心脏反应强度。数据表明，即使是微弱的感觉刺激也会在每个感觉系统开始发挥作用后的最初几天内引起防御反应（心率加速）；在发展的后期，相同的刺激引起了定向反应（心脏减速）。（25 参考）（PsycINFO 数据库记录 (c) 2016 APA，保留所有权利）
Studied development and habituation of responsivity to sound and visual stimuli in 120 8–19 day old Sprague-Dawley pups by using a change in heart rate (HR) as the indicant response (Exp I). A change in HR to sound (white noise) first occurred around 14–25 days of age and was acceleratory in nature. Within 3 days, the direction of the HR response shifted to bradycardia. The HR response to light was also characterized by tachycardia in young pups (14 days), which shifted to bradycardia as the pups matured (16 days and older). In Exp II, the HR response of 15-and 19-day-old Ss was studied at 3 auditory stimulus intensities (60, 70, and 90 db, B scale). Stimulus intensity influenced the magnitude of the cardiac response in the 19-day-old pups. Data suggest that even weak sensory stimuli elicited a defensive reaction (HR acceleration) during the 1st few days that followed onset of function in each sensory system; later in development, the same stimulus elicited an orienting response (cardiac deceleration).(25 ref)(PsycINFO Database Record (c) 2016 APA, all rights reserved)