The somatosensory cortex (S1 and S2) is the region of the parietal lobe that receives and processes sensory input from the body — touch, temperature, pain, proprioception, and body position. It creates a "somatotopic" map of the body (the homunculus).
Key Functions
- •Tactile discrimination — texture, pressure, vibration
- •Proprioception — joint position, movement sense
- •Body schema — integrated sense of body boundaries and position in space
- •Sensory expansion — training can sharpen discrimination and expand the "felt" body
In ONDA Life
Parts 13 (I Sense) and 15 (I Attune) engage the somatosensory cortex for expanded sensory mapping. Part 13 sharpens tactile perception and stimulus discrimination; Part 15 uses it to blur the physical edges of the body and experience the partner's sensations as one's own.