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Sense organs of human body can be undertaken as essential aspects of human life. Our world is alive with stimuli, all the objects and events that surround us. Sensation and perception are the processes that allow us to detect and understand various stimuli. We do not actually experience these stimuli directly, rather, our senses allow us to get information about aspects of our environment, and we then take that information and form a perception of world. Sensation is the processes of receiving stimulus energies from external envi-ronment and transforming those energies into neural energy. Physical energy such as light, sound, heat is detected by physical receptors cells in the sense organs-eyes, ears, skin, nose and tongue. When the recep-tor cells register a stimulus, the energy is converted to an electrochemical impulse or action potential that relays information about stimulus through the nervous system to brain. An action potential is brief wave of electric charge that sweeps down the axon of a neuron for possible transmission to another neuron. When it reaches the brain, the information travels to the appropriate area of cerebral cortex. The brain gives mean-ing to sensation through perception. Perception is the process of organizing and interpreting sensory infor-mation so that it makes sense. Every species is adapted to sense and perceive stimuli that matter to that spe-cies ability to survive in its environment. Ayurved says that Indriyas able to pertain knowledge of Vishayas - Sabda, Sparsa, Rupa, Rasa and Gandha. The production of speech is pertained by the help of Vagendri-ya. Acharya Charak said that knowledge is obtained by conjoint action of Aatma, Indriya, Mana and Vishayas. |
