PMID- 7961181
OWN - NLM
STAT- MEDLINE
DCOM- 19941208
LR  - 20190821
IS  - 0378-5955 (Print)
IS  - 0378-5955 (Linking)
VI  - 78
IP  - 1
DP  - 1994 Jul
TI  - Auditory cortical responses in humans with congenital unilateral conductive 
      hearing loss.
PG  - 91-7
AB  - We recorded auditory evoked magnetic fields from 6 patients with congenital 
      unilateral conductive hearing disorder with a 122-channel whole-head 
      neuromagnetometer. The stimuli were 50-ms 1-kHz tones delivered to the better ear 
      at interstimulus intervals (ISIs) of 2 and 8 s at two different intensities (50 
      and 70 dB HL). As in normal-hearing subjects, the amplitudes of N100m, the 100-ms 
      response, were larger in 5 patients and the latencies were shorter in 3 patients 
      over the hemisphere contralateral to stimulation. However, in one patient N100m 
      peaked already at 61 ms over the contralateral hemisphere and amplitudes were 
      larger over the ipsilateral hemisphere, possibly reflecting reorganization of the 
      auditory pathways. In 3 patients the latencies were shorter over the ipsilateral 
      hemisphere. The effects of ISI and intensity were similar over both hemispheres 
      and did not differ from those in controls. It seems that congenital unilateral 
      conductive hearing loss does not necessarily lead to any gross disturbances in 
      the human auditory cortex.
FAU - Vasama, J P
AU  - Vasama JP
AD  - Low Temperature Laboratory, Helsinki University of Technology, Espoo, Finland.
FAU - Makela, J P
AU  - Makela JP
FAU - Parkkonen, L
AU  - Parkkonen L
FAU - Hari, R
AU  - Hari R
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - Netherlands
TA  - Hear Res
JT  - Hearing research
JID - 7900445
SB  - IM
MH  - Acoustic Stimulation
MH  - Adolescent
MH  - Adult
MH  - Auditory Cortex/pathology/*physiology
MH  - Auditory Threshold/physiology
MH  - Child
MH  - Ear Canal/*abnormalities
MH  - Ear, External/abnormalities
MH  - Ear, Middle/*abnormalities
MH  - Electromagnetic Fields
MH  - Evoked Potentials, Auditory/physiology
MH  - Female
MH  - Hearing Loss, Conductive/congenital/*physiopathology
MH  - Humans
MH  - Magnetics
MH  - Male
EDAT- 1994/07/01 00:00
MHDA- 1994/07/01 00:01
CRDT- 1994/07/01 00:00
PHST- 1994/07/01 00:00 [pubmed]
PHST- 1994/07/01 00:01 [medline]
PHST- 1994/07/01 00:00 [entrez]
AID - 0378-5955(94)90047-7 [pii]
AID - 10.1016/0378-5955(94)90047-7 [doi]
PST - ppublish
SO  - Hear Res. 1994 Jul;78(1):91-7. doi: 10.1016/0378-5955(94)90047-7.