Which type of cells are responsible for auditory transduction?
Which type of cells are responsible for auditory transduction?
The inner hair cells are the primary auditory receptors and exist in a single row, numbering approximately 3,500. The stereocilia from inner hair cells extend into small dimples on the tectorial membrane’s lower surface. The outer hair cells are arranged in three or four rows.
What is the mechanism for auditory transduction?
In the auditory system, sound vibrations (mechanical energy) are transduced into electrical energy by hair cells in the inner ear. Sound vibrations from an object cause vibrations in air molecules, which in turn, vibrate the ear drum.
Where does auditory transduction occur?
Cochlea
The Inner Ear (Cochlea) is where transduction takes place.
What is transduction audition?
Audition (Hearing) Hearing, or audition, is the transduction of sound waves into a neural signal that is made possible by the structures of the ear (Figure 1). At the end of the auditory canal is the tympanic membrane, or ear drum, which vibrates after it is struck by sound waves.
What cells are responsible for hearing?
The cochlear hair cells in humans consist of one row of inner hair cells and three rows of outer hair cells (see Figure 13.4). The inner hair cells are the actual sensory receptors, and 95% of the fibers of the auditory nerve that project to the brain arise from this subpopulation.
How do hair cells transduce an auditory stimulus?
The neurotransmitters diffuse across the narrow space between the hair cell and a cochlear nerve terminal, where they then bind to receptors and thus trigger action potentials in the nerve. In this way, an inner hair cell acts as mechanoreceptor that transduces vibrational into electrical energy.
What are auditory receptors?
A sensory receptor consisting of hair cells in the basilar membrane of the organ of Corti that translate sound waves—pressure waves with frequencies between 16 hertz and 20,000 hertz—into nerve impulses. Also called a phonoreceptor. From: auditory receptor in A Dictionary of Psychology »
What do hair cells transduce?
Hair cells can convert the displacement of the stereociliary bundle into an electrical potential in as little as 10 microseconds; indeed, such speed is required to faithfully transduce high-frequency signals and enable the accurate localization of the source of the sound.
How many stages of transduction does audition have?
Thus, sound waves are transmitted and amplified from the air-filled external and middle ears to the fluid-filled inner ear, which contains the receptors. Figure 3–21 Steps in auditory transduction in hair cells….AUDITION.
| dB | = Decibel |
|---|---|
| P | = Sound pressure being measured |
| P0 | = Reference pressure measured at the threshold frequency |
What are the auditory receptors?
A sensory receptor consisting of hair cells in the basilar membrane of the organ of Corti that translate sound waves—pressure waves with frequencies between 16 hertz and 20,000 hertz—into nerve impulses. Also called a phonoreceptor.
What is the function of the auditory tube?
The main function of the eustachian tube is ventilation of the middle ear and maintenance of equalized air pressure on both sides of the tympanic membrane (eardrum). Closed at most times, the tube opens during swallowing. This permits equalization of the pressure without conscious effort.
