Stimulus modality, also called sensory modality, is one aspect of a stimulus or what is perceived after a stimulus. 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 heighten stimuli sensation when necessary. Multimodal perception is the ability of the mammalian nervous system to combine all of the different inputs of the sensory nervous system to result in an enhanced detection or identification of a particular stimulus. Combinations of all sensory modalities are done in cases where a single sensory modality results in an ambiguous and incomplete result. Integration of all sensory modalities occurs when multimodal neurons receive sensory information which overlaps with different modalities. Multimodal neurons are found in the superior colliculus; they respond to the versatility of various sensory inputs. The multimodal neurons lead to change of behavior and assist in analyzing behavior responses to certain stimulus. Information from two or more senses is encountered. Multimodal perception is not limited to one area of the brain: many brain regions are activated when sensory information is perceived from the environment. In fact, the hypothesis of having a centralized multisensory region is receiving continually more speculation, as several regions previously uninvestigated are now considered multimodal. The reasons behind this are currently being investigated by several research groups, but it is now understood to approach these issues from a decentralized theoretical perspective. Moreover, several labs using invertebrate model organisms will provide invaluable information to the community as these are more easily studied and are considered to have decentralized nervous systems. Lip reading is a multimodal process for humans.

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Concepts associés (15)
Sens (physiologie)
vignette|Les cinq sens d'après Aristote, représentés par leurs organes sensoriels inhérents : oreilles, yeux, langue, nez, peau. Du point de vue de la physiologie, les sens sont les systèmes sensoriels de la perception. Leur fonctionnement, leur classification, et la théorie épistémologique qui soutient leur étude sont abordés par plusieurs disciplines, principalement les neurosciences, mais aussi la psychologie cognitive (ou science cognitive), et toutes les philosophies et études sociales telle l’anthropologie ayant trait à la perception.
Synesthésie
La synesthésie (du grec syn, « avec » (union), et aesthesis, « sensation ») est un phénomène neurologique non pathologique par lequel deux ou plusieurs sens sont associés (de manière durable). Par exemple la synesthésie dite « graphèmes-couleurs » (qui représenterait 65 % des synesthésies) fait que les lettres de l'alphabet (ou des nombres) sont perçues colorées. Dans la synesthésie dite « synesthésie numérique », les nombres sont tous et systématiquement associés avec des positions dans l'espace.
Multisensory integration
Multisensory integration, also known as multimodal integration, is the study of how information from the different sensory modalities (such as sight, sound, touch, smell, self-motion, and taste) may be integrated by the nervous system. A coherent representation of objects combining modalities enables animals to have meaningful perceptual experiences. Indeed, multisensory integration is central to adaptive behavior because it allows animals to perceive a world of coherent perceptual entities.
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