Search results
Results from the WOW.Com Content Network
The initialization of sensation stems from the response of a specific receptor to a physical stimulus. The receptors which react to the stimulus and initiate the process of sensation are commonly characterized in four distinct categories: chemoreceptors, photoreceptors, mechanoreceptors, and thermoreceptors.
A sense is a biological system used by an organism for sensation, the process of gathering information about the surroundings through the detection of stimuli. Although, in some cultures, five human senses [ 1 ] were traditionally identified as such (namely sight , smell , touch , taste , and hearing ), many more are now recognized. [ 2 ]
This effect might arise due to a physical-to-mental scaffolding process in early development, whereby sensorimotor experiences are linked to the emergence of conceptual knowledge. [46] Such links might be maintained throughout life, and so touching an object may cue the physical sensation to its related conceptual processing.
This causes physical responses, such as a faster heartbeat, rapid breathing, and an increase in blood pressure. Blood pumps to muscle groups to prepare the body for physical action like running or fighting. Skin sweats to keep the body cool. Some people might notice sensations in the stomach, head, chest, legs, or hands.
Psychophysics quantitatively investigates the relationship between physical stimuli and the sensations and perceptions they produce. Psychophysics has been described as "the scientific study of the relation between stimulus and sensation" [1] or, more completely, as "the analysis of perceptual processes by studying the effect on a subject's experience or behaviour of systematically varying the ...
The cause of somatic symptom disorder is unknown. Symptoms may result from a heightened awareness of specific physical sensations paired with a tendency to interpret these experiences as signs of a medical ailment. [2] The diagnosis is controversial, as people with a physical illness can be misdiagnosed with it.
This form of synesthesia is a combination of different types of synesthesia. Features appear similar to auditory–tactile synesthesia but sensations are not isolated to individual numbers or letters but complex systems of relationships.
The physical sensation of hunger is related to the contractions of the muscles of the empty stomach. Peristalsis takes place even when the stomach is empty, and these contractions—sometimes called hunger pangs once they become severe—are believed to be triggered by high concentrations of the ghrelin hormone.