PSYC 100 Lecture Notes - Lecture 20: Cochlea, Middle Ear, Stirrup

• School: McGill University
• Department: Psychology
• Course: PSYC 100
• Professor: Jens Pruessner

Document Summary

In touch, sensors in the skin detect pressure, temperature and pain. Haptic sense: sensation of temperature, pressure, pain and a sense of where our limbs are in space. We really have 8 senses because of the haptic sense"s 4 parts (hot, cold, pressure and pain) that are encountered separately. Anything that makes contact with our skin provides tactile stimulation which gives rise to an integrated experience of touch. The haptic receptors for temperature and pressure are sensory neurones that terminate in the skin"s outer layer. Their long axons enter the cns by way of spinal nerves. For sensing temperature, there are separate receptors for sensing cold and hot, although both can be triggered at the same time by intense stimuli which can produce strange sensory experiences such as a false feeling of wetness. Some receptors for pressure are nerve fibbers at the bases of hair follicles that respond to movement in the hair.