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Fast and accurate edge orientation processing during object manipulation
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AI
DOI：10.7554/eLife.31200.png)
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摘要
En 中文
Quickly and accurately extracting information about a touched object's orientation is a critical aspect of dexterous object manipulation. However, the speed and acuity of tactile edge orientation processing with respect to the fingertips as reported in previous perceptual studies appear inadequate in these respects. Here we directly establish the tactile system's capacity to process edge-orientation information during dexterous manipulation. Participants extracted tactile information about edge orientation very quickly, using it within 200 ms of first touching the object. Participants were also strikingly accurate. With edges spanning the entire fingertip, edge orientation resolution was better than 3 in our object manipulation task, which is several times better than reported in previous perceptual studies. Performance remained impressive even with edges as short as 2 mm, consistent with our ability to precisely manipulate very small objects. Taken together, our results radically redefine the spatial processing capacity of the tactile system.
Keyword:
RECEPTIVE-FIELD CHARACTERISTICS
CUTANEOUS MECHANORECEPTORS
HUMAN HAND
SOMATOSENSORY CORTEX
TACTILE AFFERENTS
GLABROUS SKIN
CUNEATE NUCLEUS
PERCEPTION
SIGNALS
STIMULUS
期刊
IF:
0
论文数:
1.8W
被引数:
16
机构
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