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Functional Neuro-Imaging and Post-Traumatic Olfactory Impairment

To evaluate via a research literature survey the anterior neurological significance of decreased olfactory functioning following traumatic brain injuries. A computer literature review was performed to locate all functional neuro-imaging studies on patients with post-traumatic anosmia and other olfac...

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Bibliographic Details
Published in:Indian journal of psychological medicine 2010-07, Vol.32 (2), p.93-98
Main Authors: Roberts, Richard J., Sheehan, William, Thurber, Steven, Roberts, Mary Ann
Format: Article
Language:English
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Summary:To evaluate via a research literature survey the anterior neurological significance of decreased olfactory functioning following traumatic brain injuries. A computer literature review was performed to locate all functional neuro-imaging studies on patients with post-traumatic anosmia and other olfactory deficits. A convergence of findings from nine functional neuro-imaging studies indicating evidence for reduced metabolic activity at rest or relative hypo-perfusion during olfactory activations. Hypo-activation of the prefrontal regions was apparent in all nine post-traumatic samples, with three samples yielding evidence of reduced activity in the temporal regions as well. The practical ramifications include the reasonable hypothesis that a total anosmic head trauma patient likely has frontal lobe involvement.
ISSN:0253-7176
0975-1564
DOI:10.4103/0253-7176.78504