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Encyclopedia > Sensation

In psychology, sensation is the first stage in the biochemical and neurologic events that begins with the impinging of a stimulus upon the receptor cells of a sensory organ, which then leads to perception, the mental state that is reflected in statements like "I see a uniformly blue wall." Wikipedia does not have an article with this exact name. ... Sensation and perception psychology is the study of human and animal systems such as vision, audition and pain sensation. ... Sensation may refer to any of the following: Look up sensation in Wiktionary, the free dictionary. ... Psychology is an academic and applied field involving the scientific study of mental processes and behavior. ... In physiology, a stimulus is a detectable change in the internal or external environment. ... In psychology and the cognitive sciences, perception is the process of acquiring, interpreting, selecting, and organizing sensory information. ...


A sensation that might lead to that statement could include the excitation of cone cells in the retina, spatially varying in the proportion of "blue" and "green" cone excitation due to portions of the wall receiving different proportions of yellowish artificial and bluish sky-light; it is common for these variations to be compensated for, within the brain, so that the non-uniform sensation yields a perception of uniform color. Normalised absorption spectra of human cone (S,M,L) and rod (R) cells Cone cells, or cones, are cells in the retina of the eye which only function in relatively bright light. ... Human eye cross-sectional view. ...


In the West, the human body's senses are divided into eight: visual, auditory, gustatory, olfactory, cutaneous, kinesthetic, vestibular, organic. The ways in which these senses are divided from one another in concept, and combined in varying ratios in perceiving the world, differs based on individual physiology, social and cultural context, and physical surroundings. The whole sensory system, including both physical sensation and interpretation (or cognition) of information from the senses, is referred to as a sensorium. Senses Senses are a UK based alternative rock band from Coventry. ... Senses Senses are a UK based alternative rock band from Coventry. ... Look up Cognition in Wiktionary, the free dictionary. ... The term sensorium (plural: sensoria) refers to the sum of an organisms perception, the seat of sensation where it experiences and interprets the environments within which it lives. ...

Contents

Visual sense

Light enters to the eyes through cornea. It then passes through the pupil, and is refracted by the crystalline lens of the eyes. Light is then channeled through the vitreous humour and then on to the retina. In the retina, there are two kinds of cells, rods and cones. Rods see black-and-white colors, and are dominant in the night (because, as Physics state, there are no colors in the night, because what we see is the colors reflected from the atmosphere). Cones then, see colored structures. Cones are exceptionally abundant in the fovea. Cones are reactive to the three colors of red, blue, and green. Other colours are sensed as combinations of these. Prism splitting light Light is electromagnetic radiation with a wavelength that is visible to the eye (visible light) or, in a technical or scientific context, electromagnetic radiation of any wavelength[1]. The elementary particle that defines light is the photon. ... The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber, providing most of an eyes optical power [1]. Together with the lens, the cornea refracts light and, as a result, helps the eye to focus. ... The lens or crystalline lens is a component of the eye. ... Human eye cross-sectional view. ... Human eye cross-sectional view. ... Normalised absoption spectra of human rod (R) and cone (S,M,L) cells. ... Normalised absorption spectra of human cone (S,M,L) and rod (R) cells Cone cells, or cones, are cells in the retina which only function in relatively bright light. ...


Auditory sense

Sound is received by the ear via the pinna, the outer ear structure, which then leads the sound inside through the external auditory meatus. After the sound passes through the meatus, it goes to the eardrum, or tympanus, then vibrates its way through the tiny ossicles, the hammer (malleus), anvil (incus), and stirrup (stapes), then to the cochlea. The cochlea converts vibration into electrical impulses which are transmitted to the brain. This article is about compression waves. ... Juzzah is a loser Boom, Headshot Bergamin and Gerald died The pinna (Latin for feather) is the visible part of the ear that resides outside of the head. ... Anatomy of the human ear. ... The tympanic membrane, colloquially known as the eardrum, is a thin membrane that separates the external ear from the middle ear. ... The ossicles (also called auditory ossicles) are the three smallest bones in the human body. ... Cross section of the cochlea. ...


Gustatory sense

Taste, or gustation, is the ability to detect sensory changes in the tongue, through the use of taste buds, situated deep into the papillae. Intriguingly, the sense called gustation is in fact comprised of varying ratios of multiple sensory systems, shifting in importance and attention as food is chewed, tasted and swallowed. These include the taste buds, the sense of touch in the structures of the mouth and digestive system, chemical sensation of irritation in the trigeminal nerve system, and unique receptors for sensing the properties of water located at the rear of the oral cavity. Taste is one of the traditional five senses and refers to the ability to detect of flavor of foodstuffs and other substances (e. ... Taste buds (or lingual papillae) are small structures on the upper surface of the tongue that provide information about the taste of food being eaten. ... This page is a candidate to be moved to Wiktionary. ... Taste buds (or lingual papillae) are small structures on the upper surface of the tongue that provide information about the taste of food being eaten. ...


Olfactory sense

Smell, or olfaction, is received by the olfactory bulb and the connected to the brain by the olfactory nerve, the first cranial nerve of the brain, just after the nasal turbinates of the nose warm, strain and filter the air. Look up smell in Wiktionary, the free dictionary. ...


Cutaneous Sense

Please see the skin article for more details. It has been suggested that this article or section be merged with Epidermis (skin). ...


Kinesthetic Sense

The kinesthetic sense is the sense of posture and movement. It is also referred to as proprioception. Proprioception (from Latin proprius, meaning ones own and perception) is the sense of the relative position of neighbouring parts of the body. ...


Vestibular Sense

The vestibular sense is the sense of balance. It is mediated by the action of the fluid inside the Semicircular canals. See also Labyrinth, an article treating the mythical maze that imprisoned the Minotaur. ...


Organic Sense

The organic sense, per se, refers only to sensation from the internal organs, or viscera, but can, however, be expanded to include certain physiological processes, such as hunger, thirst, drowsiness and air hunger. It is also referred to as interoception. To meet Wikipedias quality standards, this article or section may require cleanup. ... Air hunger is the sensation of the urge to breathe. ... Senses are the physiological methods of perception. ...


  Results from FactBites:
 
Sensation - Wikipedia, the free encyclopedia (527 words)
In psychology, sensation is the first stage in the chain of biochemical and neurologic events that begins with the impinging of a stimulus upon the receptor cells of a sensory organ, which then leads to perception, the mental state that is reflected in statements like "I see a uniformly blue wall."
These include the taste buds, the sense of touch in the structures of the mouth and digestive system, chemical sensation of irritation in the trigeminal nerve system, and unique receptors for sensing the properties of water located at the rear of the oral cavity.
Smell, or olfaction, is received by the olfactory bulb and the connected to the brain by the olfactory nerve, the 1st cranial nerve of the brain, just after the nasal turbinates of the nose warms strain and filter the air.
SENSATION - Definition (388 words)
The sensation caused by the appearance of that work is still remembered by many.
``Sensation properly expresses that change in the state of the mind which is produced by an impression upon an organ of sense (of which change we can conceive the mind to be conscious, without any knowledge of external objects).
Perception, on the other hand, expresses the knowledge or the intimations we obtain by means of our sensations concerning the qualities of matter, and consequently involves, in every instance, the notion of externality, or outness, which it is necessary to exclude in order to seize the precise import of the word sensation.'' --Fleming.
  More results at FactBites »

 
 

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