| A | B |
|---|
| Audition | the sense of hearing |
| Frequency | the number of complete wavelengths that pass a point in a given time (Ex: per second) |
| Pitch | a tone's highness or lowness; depends on frequency |
| Middle Ear | the chamber between the eardrum and cochlea containing the tiny bodes (hammer, anvil, and stirrup) that concentrate the vibrations of the eardrum on the cochlea's oval window |
| Inner Ear | the innermost part of the ear, containing the cochlea, semicircular canals, and vestibular sacs |
| Cochlea | a coiled, bony, fluid-filled tube in the inner ear through which sound waves trigger nerve pulses |
| Place Theory | in hearing, the theory that links the pitch we hear with the place where the cochlea's membrane is stimulated |
| Frequency Theory | in hearing, the theory that the rate of nerve impulses traveling up the auditory nerve matches the frequency of a tone; thus enabling us to sense its pitch |
| Conduction Deafness | hearing loss caused by damage to the mechanical system that conducts sound waves to the cochlea |
| Nerve Deafness | hearing loss caused by damage to the cochlea's receptor cells or to the auditory nerves |
| Gate-Control Theory | theory that the spinal cord contains a neurological "gate" that blocks pain signals or allows them to pass on to the brain. The "gate" is opened by the activity of pain signals traveling up small nerve fibers and is closed by activity in larger fibers or by information coming from the brain |
| Kinesthesis | the system for sensing the position and movement of individual body parts |
| Vestibular Sense | the sense of body movement and position, including the sense of balance |
