| trigone of auditory nerve | The slight prominence of the floor of the lateral recess of the fourth ventricle, corresponding to the underlying cochlear and vestibular nuclei. Synonym: acoustic tubercle, trigonum acustici. (05 Mar 2000) |
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| evoked potentials, auditory | The electric response evoked in the cerebral cortex by acoustic stimulation or stimulation of the auditory pathways. (12 Dec 1998) |
| evoked potentials, auditory, brainstem | Electrical waves in the cerebral cortex generated by brainstem structures in response to auditory click stimuli. These are found to be abnormal in many patients with cerebellopontine angle lesions, multiple sclerosis, or other demyelinating diseases. (12 Dec 1998) |
| joints of auditory ossicles | The joints of the ossicular chain consisting of incudomallear joint, incudostapedeal joint, and the tympanostapedeal syndesmosis. Synonym: articulationes ossiculorum auditus, joints of ear bones. (05 Mar 2000) |
| tympanic opening of auditory tube | An opening in the anterior part of the tympanic cavity below the canal for the tensor tympani muscle. Synonym: ostium tympanicum tubae auditivae, tympanic opening of eustachian tube. (05 Mar 2000) |
| external auditory foramen | The orifice of the external acoustic meatus in the tympanic portion of the temporal bone. Synonym: porus acusticus externus, external acoustic foramen, external acoustic pore, external auditory pore, external auditory foramen, orifice of external acoustic meatus. (05 Mar 2000) |
| external auditory meatus | The passage leading inward through the tympanic portion of the temporal bone, from the auricle to the tympanic membrane; it consists of a bony (inner) portion and a fibrocartilaginous (outer) portion, the cartilaginous external acoustic meatus. Synonym: meatus acusticus externus, acoustic meatus, antrum auris, auditory canal, external auditory meatus. (05 Mar 2000) |
| lateral lamina of cartilaginous auditory tube | The narrow lateral portion of the cartilaginous part of the auditory tube. Synonym: lamina lateralis cartilaginis tubae auditivae, lamina cartilaginis lateralis tubae auditivae, lateral cartilaginous layer, lateral layer of cartilaginous auditory tube. (05 Mar 2000) |
| lateral layer of cartilaginous auditory tube | The narrow lateral portion of the cartilaginous part of the auditory tube. Synonym: lamina lateralis cartilaginis tubae auditivae, lamina cartilaginis lateralis tubae auditivae, lateral cartilaginous layer, lateral layer of cartilaginous auditory tube. (05 Mar 2000) |
| fundus of internal auditory meatus | The thin cribriform plate of bone separating the cochlea and vestibule from the internal acoustic meatus; a transverse crest divides it into two regions; in the superior region are located the area nervi facialis and the area vestibularis superior; in the inferior region are located the area cochleae, area vestibularis inferior, and foramen singulare. Synonym: fundus meatus acustici interni, fundus of internal auditory meatus. (05 Mar 2000) |
| ligaments of auditory ossicles | The ligaments connecting the ear bones with one another and with the walls of the tympanic cavity. Synonym: ligamenta ossiculorum auditus. (05 Mar 2000) |
| affective personality disorder | A disturbance of feelings or mood expressed as a milder form of depression and related emotional features that colour the whole psychic life and for which psychosocial stressors are believed to play the major role. (05 Mar 2000) |
| alcohol amnestic disorder | <psychiatry> A mental disorder with brain damage characterised by amnesia, compensatory confabulation, disturbance of attention, and peripheral neuritis. It is usually associated with alcoholism and dietary deficiencies. (12 Dec 1998) |
| antisocial personality disorder | <psychiatry> An individual who engages in deviant behaviour with lack of remorse. (13 Jan 1998) |
| asthenic personality disorder | A personality type characterised by low energy level, easy fatigability, incapacity for enjoyment, lack of enthusiasm, and oversensitivity to physical and emotional stress. When appearing in marked form it becomes a psychological disorder (asthenic personality disorder), also called dependent personality. Synonym: asthenic personality disorder, dependent personality disorder. (05 Mar 2000) |