Stubbing D G, Killian K J, Campbell E J
Respir Physiol. 1981 May;44(2):251-60. doi: 10.1016/0034-5687(81)90041-4.
The technique of open magnitude scaling was used in normal subjects to define the exponent (n) of Stevens; psychophysical power law for four respiratory variables: tidal volume (VT), inspiratory flow (V), ventilation (Ve), and frequency (f). Stevens' psychophysical law states that the perceived magnitude (psi) of a stimulus is related to the physical magnitude (phi) by a constant (k) and an exponent (n): psi = kappaphin. The mean value of n was for VT 1.14 plus or minus 0.08 (SEM), V 1.13 plus or minus 0.15, for Ve 1.28 plus or minus 0.11 and for f 1.04 plus or minus 0.15. These results show that these respiratory variables are judged with an expanded sensory scale. The similarity of exponents for VT and V leaves open the possibility tht both are sensed by the same neurophysiological mechanism. Further experiments on VT showed that both passive ventilation and chest vibration impaired the ability of subjects to accurately judge tidal volumes. Our results indicate that the sensation of volume is mediated by afferent information generated by receptors affected by respiratory muscle concentration.
在正常受试者中采用开放量级标度技术来确定史蒂文斯心理物理幂定律的指数（n），该定律用于四个呼吸变量：潮气量（VT）、吸气流量（V）、通气量（Ve）和频率（f）。史蒂文斯心理物理定律指出，刺激的感知量级（psi）与物理量级（phi）通过一个常数（k）和一个指数（n）相关：psi = kappaphin。VT的n的平均值为1.14±0.08（标准误），V为1.13±0.15，Ve为1.28±0.11，f为1.04±0.15。这些结果表明，这些呼吸变量是通过扩展的感觉标度来判断的。VT和V的指数相似性使得两者可能由相同的神经生理机制感知。对VT的进一步实验表明，被动通气和胸部振动都会损害受试者准确判断潮气量的能力。我们的结果表明，体积感觉是由受呼吸肌收缩影响的感受器产生的传入信息介导的。
