PSYCO367 Chapter Notes - Chapter 14: Lamellar Corpuscle, Secondary Somatosensory Cortex, Cutaneous Receptor
13 Apr 2018
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Rare condition that results in losing the ability to feel sensations through the skin. Increases the chance of injury often suffer constant bruises, burns, and broken bones: also makes it difficult to interact with the environment because of the loss of feedback from the skin that accompanies many actions. Ra2 mechanoreceptors; transmits pressure to the nerve fiber inside it only at the beginning or end of a pressure stimulus and is responsible for our perception of vibration and fine textures when moving the fingers over a surface. Cutaneous receptors in the skin are distributed over the whole body. Signals from all over the body are conducted from the skin to the spinal cord, which consists of 31 segments, each of which receives signals through a bundle of fibers called the dorsal root. One of the basic principles of cortical organization is that the cortical representation of a particular function can become larger if that function is used often (experience-dependent plasticity)
