Martin J H, Zambelli A, Bando T, Spencer W A
Brain Res. 1985 Feb 18;327(1-2):269-77. doi: 10.1016/0006-8993(85)91520-3.
Psychophysical studies on masking of sensations induced by sinusoidal mechanical stimuli were conducted in human subjects to characterize the interactions within and between the submodalities of flutter and vibration. Using a conditioning-test stimulus paradigm, we found that the threshold of a test stimulus was elevated (masking) when the test stimulus was paired with a twice-threshold conditioning stimulus that activated the same submodality. Detection theory analysis further indicated that the observed elevation in threshold resulted in part from a change in stimulus detectability (i.e.d'). In contrast, when the test stimulus and the twice-threshold conditioning stimulus activated different submodalities, no elevation in test stimulus threshold (no masking) was observed. Thus, for stimuli that activate either flutter or vibration, masking (and the inhibitory operations by which it is presumably mediated) is restricted to a given submodality and not distributed across submodalities. This finding suggests that these submodality channels function independently.
在人类受试者中进行了关于正弦机械刺激诱发的感觉掩蔽的心理物理学研究，以表征颤动和振动子模态内部以及它们之间的相互作用。使用条件 - 测试刺激范式，我们发现当测试刺激与激活相同子模态的两倍阈值条件刺激配对时，测试刺激的阈值升高（掩蔽）。检测理论分析进一步表明，观察到的阈值升高部分是由于刺激可检测性（即d'）的变化。相反，当测试刺激和两倍阈值条件刺激激活不同子模态时，未观察到测试刺激阈值升高（无掩蔽）。因此，对于激活颤动或振动的刺激，掩蔽（以及推测其介导的抑制作用）仅限于给定的子模态，而不会分布在子模态之间。这一发现表明这些子模态通道独立发挥作用。
