PSYB51H3 Chapter 12: Chapter 12 - study notes
Document Summary
Sound for speech, they are peaks in frequency spectrum of that sound. Vowels are harmonic sounds with regular intervals of frequency level. They are good for distinguishing /b/ different vowels, help us perceive speech. Narrow definition of touch = sensations caused by mechanical displacements of skin. All these senses put together is somatosensation = collective term for sensory signals from body. Purpose of touch = evolutionary, sense pain, temperature sensation enables us to seek or create thermally safe environment. Mechanical sensations play important role in our intimate sexual and reproductive activities and provide powerful means of communicating our thoughts and emotions nonverbally. We also use touch to id and manipulate objects that can"t be seen or heard. Our eyes and ears can perceive signals from objects far from body, but we must almost always be in direct contact w/ object to perceive it by touch (exception is vibration of jackhammer across street, temperature ie sun).
