PSYB65H3 Chapter Notes - Chapter 10: Lateral Sulcus, Frontal Lobe, Social Cognition
Document Summary
Sound wave: undulating, displacement of molecules caused by changing pressures. Frequency: number of cycles that a wave completes in a given amount of time. Hertz (hz): measure of frequency (repetition rate) of a sound wave; 1 hertz is equal to 1 cycles per second. Amplitude: intensity of a stimulus in audition, roughly equivalent to loudness, graphed by increasing the height of a sound wave. Decibel (db): unit for meausing the relative physical intensity of sounds. Pure tones: sounds with a single frequency wave. Complex tones: a combination of mixed wave frequencies. Fundamental frequency: wave 1; the rate at which the complex waveform pattern repeats. Noise: sounds that intervals repeat aperiodically or randomly. Timbre or sound quality: the perceived characteristics that distinguish a particular sound from all others of similar pitch and loudness. Ossicles: bones of the middle ear: malleus (hammer), incus (anvil), and stapes (stirrup) Cochlea: inner-ear structure that contains the auditory receptor cells.
