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Terms in this set (87)

*Cochlear nucleus*
-First site of the neuronal processing of the newly converted "digital" data from the inner ear.
*Trapezoid body*
-The Trapezoid body is a bundle of decussating fibers in the ventral pons that carry information used for binaural computations in the brainstem.
*Superior olivary complex*
-Located in the pons, and receives projections predominantly from the ventral cochlear nucleus, although the dorsal cochlear nucleus projects there as well, via the ventral acoustic stria. Within the superior olivary complex lies the lateral superior olive (LSO) and the medial superior olive (MSO).
*Lateral lemniscus*
-A tract of axons in the brainstem that carries information about sound from the cochlear nucleus to various brainstem nuclei and ultimately the contralateral inferior colliculus of the midbrain.
*Inferior colliculi*
-The IC are located just below the visual processing centers known as the superior colliculi. The central nucleus of the IC is a nearly obligatory relay in the ascending auditory system, and most likely acts to integrate information (specifically regarding sound source localization from the superior olivary complex and dorsal cochlear nucleus) before sending it to the thalamus and cortex.
*Medial geniculate nucleus*
-The medial geniculate nucleus is part of the thalamic relay system.
*Primary auditory cortex*
-The primary auditory cortex is the first region of cerebral cortex to receive auditory input.
Perception of sound is associated with the left posterior superior temporal gyrus (STG). The superior temporal gyrus contains several important structures of the brain marking the location of the primary auditory cortex, the cortical region responsible for the sensation of basic characteristics of sound such as pitch and rhythm.