摘要
在主动触觉中,长度知觉通过手的各种触摸动作而实现,构成各种触觉长度知觉方式。例如,可以用食指沿物体表面从一端摸到另一端,或用拇指和食指夹住物体两侧并触摸。这两种触觉长度知觉方式在感知长度时是不一致的(Hohmuth)。
Two modes of haptic length perception have been tested with themethod of constant stimuli:Thumb-index finger span (2F mode) andtouching of index finger along the surface of a wooden bar from one endto the other (1F mode). In addition to the DL, we also obtained d’ and βaccording to the signal detection theory from the same data. In terms ofboth DL and d’, the 2F mode is more accurate than the 1F mode. Theformer has lower DL and bigger d’, while the latter has higher DL andsmaller d’. The DL data are consistent with d’. These two modes have nosignigicant difference in β. The results suggest that the two modes aredifferential not in the criterion of decision but in the sensitivity conditionedby the various ways of encoding in processing length information.
出处
《心理学报》
1981年第1期86-92,共7页
Acta Psychologica Sinica
