PubMed · 5440853
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T N Cornsweet, H D Crane. 1970. Servo-controlled infrared optometer.. https://doi.org/10.1364/josa.60.000548
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The importance of sensory feedback from the oral cavity is evaluated in the context of functional rehabilitation following ablative surgery using three techniques that restore or preserve sensation. Nerve grafts to restore the continuity of sensory nerves interrupted during ablative surgery, as well as the role of sensate flaps and the protection of palatal sensation following soft palate resection or total glossectomy, are discussed.
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Normal human subjects grasped an isometric handle with an unrestrained, pronated hand. They were asked to exert forces continuously to draw lemniscates (figure eights) in specified or self-chosen planes and in the presence or absence of a three-dimensional visual feedback cursor and a visual template. In every condition, the mean plane orientation in the force space differed appreciably between the two loops of the figure, as described previously by Soechting and Terzuolo (1987a) for free drawing arm movements. These findings suggest that the planar segmentation of the motor trajectory is not a consequence of joint motion but arises from central constraints related to the production of motor trajectory in space.