Which of the following describes what happens if you trace an auditory stimulus from the time it first reaches the ear on its path to the brain?

Which of the following describes what happens if you trace an auditory stimulus from the time it first reaches the ear on its path to the brain?

Which of the following describes what happens if you trace an auditory stimulus from the time it first reaches the ear until it arrives at the brain? The outermost part of the ear (pinna) gathers sound waves and funnels them down the auditory canal striking the eardrum.

When a sound enters the ear what are the structures it passes through on its way to become a fully processed neural signal within the brain fill in the blanks below?

The sound waves enter the inner ear and then into the cochlea, a snail-shaped organ. The cochlea is filled with a fluid that moves in response to the vibrations from the oval window. As the fluid moves, 25,000 nerve endings are set into motion.

What type of sound do we localize by comparing the time of arrival at the two ears?

The azimuth of a sound is signaled by the difference in arrival times between the ears, by the relative amplitude of high-frequency sounds (the shadow effect), and by the asymmetrical spectral reflections from various parts of our bodies, including torso, shoulders, and pinnae.

How does auditory information get from the ear to the brain?

When the vibrations reach the inner ear, they ripple the fluid inside a snail-shell-shaped structure called the cochlea. Now the sound waves are waves in liquid. In the cochlea, specialized receptor cells — hair cells — convert the liquid motion into electrical signals that travel on to the brain.

What is the function of the external auditory canal?

Once the sound waves have passed the pinna, they move two to three centimetres into the auditory canal before hitting the eardrum, also known as the tympanic membrane. The external auditory canal’s function is to transmit sound from the pinna to the eardrum.

What is the auditory pathway?

Auditory messages are conveyed to the brain via two types of pathway: the primary auditory pathway which exclusively carries messages from the cochlea, and the non-primary pathway (also called the reticular sensory pathway) which carries all types of sensory messages.

How does the auditory system localize sounds?

Sound localization is based on binaural cues (interaural differences), or differences in the sounds that arrive at the two ears (i.e., differences in either the time of arrival or the intensity of the sounds at the right and left ears), or on monaural spectral cues (e.g., the frequency-dependent pattern of sound …

How fast does the brain process auditory information?

Speed of sound: But sound? You can recognize a sound in 0.05 seconds. And our brain is so adept at hearing the differences between sounds, we can sense changes of sound that occur in “less than a millionth of a second,” according to Horowitz’s book.

What does the auditory nerve do?

The cochlear nerve, also known as the acoustic nerve, is the sensory nerve that transfers auditory information from the cochlea (auditory area of the inner ear) to the brain. It is one of the many pieces that make up the auditory system, which enables effective hearing.

How does auditory stimulus reach the brain faster than visual stimulus?

auditory stimulus takes only 8-10 milliseconds to reach the brain, but on the other hand, a visual stimulus takes 20-40 milliseconds. This implies that the faster the stimu-lus reaches the motor cortex, faster will be the reaction time to the stimulus. Therefore since the auditory stimu-lus reaches the cortex faster than the visual stimulus, the

How long does it take a stimulus to reach the brain?

, reference [7], show that an auditory stimulus takes only 8-10 milliseconds to reach the brain, but on the other hand, a visual stimulus takes 20-40 milliseconds. This implies that the faster the stimu- lus reaches the motor cortex, faster will be the reaction time to the stimulus.

How does information travel from the ear to the brain?

Information travels from the receptors in the organ of Corti of the inner ear (cochlear hair cells) to the central nervous system, carried by the vestibulocochlear nerve (CN VIII). This pathway ultimately reaches the primary auditory cortex for conscious perception. In addition, unconscious processing of auditory information occurs in parallel.

How is sound processed in the human brain?

The processing of decoded sound material starts within the primary auditory pathway. This pathway carries messages from the cochlea to a sensory area of the temporal lobe called the auditory cortex. First stop on this journey is taken in the brain stem, where a decoding of basic signals such as duration, intensity and frequency takes place.