The document outlines different types of sensory modalities and receptors. It discusses the differences between sensation and perception. There are multiple ways to classify sensory receptors based on their structure, location, stimuli detected, and response type. Somatic sensations include tactile sensations like touch, pressure, vibration, itch, and tickle detected by various receptors. Thermal sensations detect temperature via free nerve endings. Pain sensations are detected by nociceptors. Proprioceptive sensations provide awareness of body position and movement via receptors in muscles, tendons, and joints.
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