sensation
Sensation can be defined as
the activation of sensory receptor cells by the stimulus. However, the
processing of the sensory stimuli into a meaningful pattern can refer to as
perception. Thus, not all sensation is usually perceived but perception is
dependent on sensation.
The correct answer is sensation; activation of the receptors by stimuli is called sensation.
Senses collect information about our environment and interpreted by the brain. There are five special senses in human, whch are vision and hearing, gustation (taste), equilibrium (for balance and body position) and olfaction (for smell).
Human also have general senses which are known as somatosensation. Somatosensation response to stimuli, such as pain, pressure, vibration and temperature.
Other parts of the somatosensation are vestibular sensation and proprioception. The vestibular sensation is the senses responsible for spatial orientation and balance and proprioception also known as kinaesthesia, is the sense of body position and sense movement.
All these senses shares a common function, they convert a stimuli such as sound or position of the body into an electrical signal within the nervous system. The conversion process is called sensory transduction.
However, there are two cellular systems that perform sensory transduction.
In one of the types of sensory transduction, there is collaboration with a neuron and cell process which engages with and detect specific stimulus.
In the second types of sensory transduction, a sensory nerves ending responds to stimulus within the external or internal environment: the neurons is made up of sensory receptor.
However, free nerve ending are stimulated by many different stimuli, thereby revealing little receptor specificity.
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