4/11/2023 0 Comments Clinical perception definition![]() Sensation is a function of the low level, biochemical, and neurological mechanisms that allow the receptor cells of a sensory organ to detect an environmental stimulus. Sensation and perception are two distinct stages of processing during human sensing. Interoceptive senses: if also considered, sensation can be expanded to include stretch (as in muscles or organs like the lungs), oxygen and carbon dioxide sensing, pH sensing, and more. Temperature sensing or thermoception: The sensation of heat and the absence of heat (cold).According to psychologists and neuroscientists, however, human brains have a system governing the perception of time. Sense of time or chronoception: Refers to how the passage of time is perceived and experienced but is not associated with a specific sensory system.Body awareness or proprioception: Provides the parietal cortex of the brain with information on the relative positions of the parts of the body.Balance or equilibrioception: Allows the sensing of body movement, direction, and acceleration, and to attain and maintain postural equilibrium and balance.Pain or nociception (physiological pain): Signals nerve and other tissue damage.Paresthesia is a sensation of tingling, pricking, or numbness of the skin that may result from nerve damage and may be permanent or temporary.The loss or impairment of the ability to feel anything touched is called tactile anesthesia.A variety of pressure receptors respond to variations in pressure (firm, brushing, sustained, etc.). Touch: is a perception resulting from the activation of neural receptors in the skin, including hair follicles, tongue, throat, and mucosa. General Sensation or Somatosensory Senses The inability to smell is called anosmia. ![]() They come together at a structure (the glomerulus) that transmits signals to the olfactory cortex in the brain. ![]() These receptors are used to detect the presence of smell. In humans, olfaction occurs when odorant molecules bind to specific sites on the olfactory receptors in the nasal cavity. This sense is mediated by specialized sensory cells of the nasal cavity. The inability to taste is called ageusia.Ĥ.Smell: the olfactory system is the sensory system used for the sense of smell (olfaction). Five basic tastes exist: sweet, bitter, sour, salty, and umami.
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