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Perception of the acoustic environment and neuroimaging findings: a report of six cases with a history of closed head injury.

Conclusion: The main finding was the relation between difficulty in determining the direction of movement of a sound source and frontal lesions and poor working memory. Poor correspondence in some cases between functional findings and imaging findings can be due to the possibility of axonal degenera...

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Published in:Acta Oto-Laryngologica Vol. 129; no. 7; pp. 801 - 809
Main Authors: Bergemalm P, Hennerdal S, Persson B, Lyxell B, Borg E
Format: case study pictorial research tables/charts Journal Article
Published: Taylor & Francis Ltd Jul2009
Online Access:View this record in EBSCOhost
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      dt: Jul2009
      vid: 129
      iid: 7
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      pub: Taylor & Francis Ltd
      place: Philadelphia, Pennsylvania
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        10.1080/00016480802419099
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        atl: Perception of the acoustic environment and neuroimaging findings: a report of six cases with a history of closed head injury.
      aug:
        au:
          Bergemalm P
          Hennerdal S
          Persson B
          Lyxell B
          Borg E
      sug:
        subj:
          Head Injuries Complications
          Neuroradiography
          Adult
          Brain Injuries
          Clinical Assessment Tools
          Evaluation Research
          Funding Source
          Magnetic Resonance Imaging
          Microscopy
          Middle Age
          Patient History Taking
          Perception
          Sample Size
          Sound
          Tomography, X-Ray Computed
          Human
          Adult: 19-44 years
          Middle Aged: 45-64 years
      ab: Conclusion: The main finding was the relation between difficulty in determining the direction of movement of a sound source and frontal lesions and poor working memory. Poor correspondence in some cases between functional findings and imaging findings can be due to the possibility of axonal degeneration as well as plastic reorganization. Objective: The purpose of the present investigation of six cases was to identify auditory, cognitive and neuroimaging long-term sequelae of closed head injury (CHI) with particular focus on environmental sound recognition and moving sound sources. Subjects and methods: Six subjects who had experienced CHI were investigated with auditory tests. Four subjects also completed cognitive testing. CT and MRI were performed. Results: There was a large individual variability of the test results with respect to morphological findings. In five cases with central auditory processing disorders morphological brain damage was demonstrated. Two cases with shortcomings on cognitive testing and with frontal brain lesions demonstrated problems in determining the direction of movement of a sound source. The results may indicate that basal frontal lobe structures play a role in following and determining the direction of movement of a sound source. Two cases had problems with environmental sound recognition; in one left temporal brain lesions were demonstrated.
      pubtype: Academic Journal
      doctype:
        case study
        pictorial
        research
        tables/charts
        Journal Article
      ougenre: Article
    language: English
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