Loss of speech comprehension following midbrain auditory system injury:
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  1. Pan CL et al. (2004) Auditory agnosia caused by a
    tectal germinoma. Neurology.  2004 Dec 28;63(12):
    2387-9.  Comment: Neurology 2005 Jul 26;65(2):339;
    author reply 339.
  2. Kimiskidis VK et al. (2004) Sensorineural hearing loss
    and word deafness caused by a mesencephalic
    lesion: clinicoelectrophysiologic correlations. Otol
    Neurotol. 2004 Mar;25(2):178-82.
  3. Musiek FE et al (2004) Central deafness associated
    with a midbrain lesion. J Am Acad Audiol 2004 feb; 15
    (2):133-151.
  4. Hoistad DL, Hain TC (2003) Central hearing loss with a
    bilateral inferior colliculus lesion. Audiol Neurootol
    2003 Mar-Apr; 8(2):111-223.
  5. Vitte E et al. (2002) Midbrain deafness with normal
    brainstem auditory evoked potentials. Neurology 2002;
    58:970–973.
  6. Masuda S et al. (2000) Word deafness after resection
    of a pineal body tumor in the presence of normal wave
    latencies of the auditory brain stem response. The
    Annals of otology, rhinology, and laryngology. 2000
    Dec;109(12 Pt 1):1107-12.
  7. Johkura K et al. (1998) Defective auditory recognition
    after small hemorrhage in the inferior colliculi. Journal
    of the Neurological Sciences. 161:91-6.
  8. Meyer B et al. (1996) Pure word deafness after
    resection of a tectal plate glioma with preservation of
    wave V of brain stem auditory evoked potentials.
    Journal of Neurology, Neurosurgery and Psychiatry. 61:
    423-4. (no online abstract)
  9. Howe JR, Miller CA (1975) Midbrain deafness following
    head injury. Neurology. 1975 Mar;25(3):286-9.
Injury in a skiing accident resulted in a "punctate
hematoma" affecting the inferior colliculi bilaterally
(top).  Compare with the normal appearance of the
inferior colliculi (bottom).  From Johkura et al. 1998.

The skier, whose MRI is shown here, was one of the
nine cases in which comprehension of spoken
language was lost following bilateral injury of the
inferior colliculi (follow links to abstracts, right).

Impact from the free edge of the cerebellar tentorium
was thought to have caused the skier's injury.

How much more serious such an
injury would be for an infant, who
has not yet begun to speak!
The inferior colliculi may play a special role in analysis of the acoustic features of speech.
Case reports of loss of speech comprehension
following bilateral injury of the inferior colliculi
in the midbrain auditory pathway:
IMFAR poster 2007:   Home   Abstract   Poster    1    2    3    4    5    6    7    8    9       References
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