SENSORY SUBSTITUTION Meaning and
Definition
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Sensory substitution refers to the process through which one sensory modality is used to convey information typically perceived by another sensory modality. In this concept, available sensory information is converted or transmitted from one sensory modality to another in order to substitute or supplement the perception of missing or impaired senses. The goal of sensory substitution is to provide individuals with alternative ways to perceive the world and gather information about their environment.
This technique typically involves the development of innovative devices or technologies that can convert sensory signals from one modality (such as sight or hearing) into signals that can be perceived by a different modality. For example, a blind person might use a sensory substitution device that converts visual input into auditory or tactile signals, allowing them to "see" their surroundings through sound or touch.
Sensory substitution has wide-ranging applications for individuals with sensory impairments or deficiencies, enabling them to access information and navigate their environment more effectively. It can enhance their sense of spatial awareness, mobility, and social interaction, improving their quality of life and independence.
By employing the principles of neuroplasticity, sensory substitution can train the brain to interpret and integrate information from alternative sensory channels, effectively re-wiring the brain to make use of previously unexplored pathways. This demonstrates the remarkable adaptability of the human brain and its capacity to compensate for sensory deficits by utilizing other intact sensory systems.
Etymology of SENSORY SUBSTITUTION
The etymology of the word "sensory substitution" can be understood by breaking it down into its constituent parts.
1. Sensory: The word "sensory" stems from the Latin word "sensus", which means "feeling" or "perception". It refers to the system of sensing and perceiving information through the senses, such as sight, hearing, touch, taste, and smell.
2. Substitution: The word "substitution" comes from the Latin word "substitutus", which means "put in place of another". It refers to the act of replacing or exchanging one thing with another.
Therefore, "sensory substitution" refers to a process or technique that involves replacing or substituting one sensory modality (such as vision or hearing) with another modality, usually as a means of compensating for or augmenting a sensory deficit or impairment.
