PSY100H1 Chapter Notes - Chapter 4.4: Taste, Machismo, Nasal Congestion
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PSY100H1 Full Course Notes
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Most of use can separately identify touch, taste, and smell, but some people cannot. People with synesthesia experience blended perceptions: people might hear colors or feel sounds, ex. A number may have a color associated with it: synesthesia can also involve blending taste and touch. Through touch we get info about texture, temperature, and pressure. All these things are because of the actions of receptors under the skin, in the muscles, joints, and tendons. The receptors send info to the somatosensory cortex in the parietal lobes of the brain: somatosensory cortex: the neural region associated with your sense of touch. Sensitivity to touch varies across the body. A simple method for testing sensitivity (acuity) is to use the two-point threshold test (fig. 4. 34, page: regions with high acuity (e. g. fingertips) can detect the two separate, but closely spaced, pressure points of the device, less sensitive regions (e. g. lower back) will perceive the same stimuli as only one pressure point.
