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For example, information from one sense has the potential to influence how information from another is perceived. [7] Sensation and perception are studied by a variety of related fields, most notably psychophysics, neurobiology, cognitive psychology, and cognitive science.
Although some [who?] consider these modalities abnormal, it is more likely that these examples demonstrate the contextual and socially learned nature of sensation. [citation needed] A 'normal' sensorium and a 'synesthetic' one differ based on the division, connection, and interplay of the body's manifold sensory apparatus. A synesthete has ...
While sensation occurs at the physical nerves, there can be reasons why it is not consistent. Age [8] or nerve damage can affect sensation. Similarly, psychological factors can affect perception of physical sensation. Mental state, memory, [9] mental illness, [10] fatigue, and other factors can alter perception.
For example, the temperature modality is registered after heat or cold stimulate a receptor. Some sensory modalities include: light, sound, temperature, taste, pressure, and smell. The type and location of the sensory receptor activated by the stimulus plays the primary role in coding the sensation. All sensory modalities work together to ...
For example, if part of a shape's border is missing people still tend to see the shape as completely enclosed by the border and ignore the gaps. Good Continuation: the principle of good continuation makes sense of stimuli that overlap: when there is an intersection between two or more objects, people tend to perceive each as a single ...
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.
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 ...
Ernst Heinrich Weber states that "the minimum increase of stimulus which will produce a perceptible increase of sensation is proportional to the pre-existent stimulus," while Gustav Fechner's law is an inference from Weber's law (with additional assumptions) which states that the intensity of our sensation increases as the logarithm of an ...