| midbrain | <anatomy, neurology> The part of the brain above the pons and below the thalamus, it is the uppermost part of the brainstem, and is involved in basic, unconscious body function. (09 Oct 1997) |
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| midbrain tegmentum | That major part of the substance of the mesencephalon or midbrain that extends from the substantia nigra to the level of the cerebral aqueduct. Synonym: tegmentum mesencephali, tegmentum, midbrain tegmentum. (05 Mar 2000) |
| midbrain vesicle | <anatomy> The middle segment of the brain; the midbrain. Sometimes abbreviated to mesen. See Brain. Origin: NL. See Meso- and Encephalon. Source: Websters Dictionary (01 Mar 1998) |
| acoustic trauma deafness | Sensorineural hearing loss due to overexposure to high intensity noise levels. Synonym: boilermaker's deafness, industrial deafness, occupational deafness. (05 Mar 2000) |
| Alexander's deafness | High frequency deafness due to membranous cochlear dysplasia. (05 Mar 2000) |
| boilermaker's deafness | Sensorineural hearing loss due to overexposure to high intensity noise levels. Synonym: boilermaker's deafness, industrial deafness, occupational deafness. (05 Mar 2000) |
| central deafness | Deafness due to disorder of the auditory system of the brainstem or cerebral cortex. (05 Mar 2000) |
| retrocochlear deafness | Former term for sensorineural deafness; suggesting a lesion proximal to the cochlea. (05 Mar 2000) |
| perceptive deafness | Former term for sensorineural deafness. (05 Mar 2000) |
| Mondini deafness | The hearing loss resulting from the structural aberration of Mondini dysplasia. (05 Mar 2000) |
| conductive deafness | Hearing impairment caused by interference with sound or transmission through the external canal, middle ear, or ossicles. (05 Mar 2000) |
| word deafness | An impairment in comprehension of the auditory forms of language and communication, including the ability to write from dictation in the presence of normal hearing. Spontaneous speech, reading, and writing are not affected. Synonym: acoustic aphasia, word deafness. (05 Mar 2000) |
| cortical deafness | Deafness resulting from bilateral lesions of the primary receptive area of the temporal lobe. (05 Mar 2000) |
| postlingual deafness | Hearing impairment occurring after speech and language skills have been developed. (05 Mar 2000) |
| prelingual deafness | Hearing impairment occurring before development of speech and language skills. (05 Mar 2000) |