Find the domain of the function 
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Definitions:
Cutaneous Sensations
Sensations perceived through the skin, including touch, pressure, heat, cold, and pain.
Vibration
Mechanical oscillations around an equilibrium point, which can be experienced and used in various fields including engineering, physics, and medicine.
Tickle
A sensation that refers to the involuntary twitching movement or laughter in response to a light touch or stroke.
Fasciculus Gracilis
A nerve fiber bundle in the posterior column of the spinal cord that conveys sensory information about fine touch and proprioception from the lower half of the body.
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