Haptic perception
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Haptic perception ( "palpable", haptikόs "suitable for touch") means literally the ability "to grasp something", and is also known as stereognosis. Perception in this case is achieved through the active exploration of surfaces and objects by a moving subject, as opposed to passive contact by a static subject during tactile perception. Haptic perception involves the cutaneous receptors of touch, and proprioceptors that sense movement and body position. The inability for haptic perception is known as astereognosis.
Haptic perception ( "palpable", haptikόs "suitable for touch") means literally the ability "to grasp something", and is also known as stereognosis. Perception in this case is achieved through the active exploration of surfaces and objects by a moving subject, as opposed to passive contact by a static subject during tactile perception. Haptic perception involves the cutaneous receptors of touch, and proprioceptors that sense movement and body position. The inability for haptic perception is known as astereognosis.
Perceptual deadband
Perceptual deadband is a region which captures perceptual limitations of human perception. The Weber fraction and the level crossings constant are employed to define the perceptual deadband for haptic force stimulus. The deadband has an important application in designing perceptually adaptive sampling mechanisms for haptic data compression, which is required for transmitting haptic data over a communication network. There are many factors which affect the possible shapes of the perceptual deadband, for example: Rate of change of force stimulus: The Weber fraction or level crossings constant decrease for a faster change in the force stimulus. Temporal resolution: It is defined as the minimum time spacing required in perceiving two consecutive force samples. Directional sensitivity: The study claims that the Weber fraction is a function of only the force magnitude, not the direction. Task being performed: discriminative or comparative A user is more sensitive while doing a comparative task than a discriminative task. It is because one has to perceive changes only along one direction under the comparative task. All this signifies that the perceptual deadband is a function of the task to be carried out.
See also
Haptic communication Haptic technology Somatosensory system
References
Text derived from https://en.wikipedia.org/w/index.php?oldid=1369981258 under CC BY-SA 4.0; modifications have been made.