Right temporal compensatory mechanisms in a deep dysphasic patient: a case report with activation study by SPECT.
A brain activation study using SPECT and 133Xe in a deep dysphasic patient with left temporal lesion is presented. The activation paradigm consisted of a passive listening to foreign language as baseline, a phoneme monitoring condition and a semantic word monitoring condition. The specific activation of the right middle temporal cortex observed in the semantic condition is congruent with the hypothesis of a compensatory role of the right hemisphere in processing concrete words. This case illustrates the interest of functional imaging for a better understanding of neural mechanisms of functional recovery after brain injury.
Cardebat
D
D
INSERM U 230, CHU Purpan, Toulouse, France.
Démonet
J F
JF
Celsis
P
P
Puel
M
M
Viallard
G
G
Marc-Vergnes
J P
JP
D000328:Adult; D000849:Anomia / Q000000981:diagnostic imaging / Q000503:physiopathology; D001037:Aphasia / Q000000981:diagnostic imaging* / Q000503:physiopathology; D001931:Brain Mapping; D002544:Cerebral Infarction / Q000000981:diagnostic imaging* / Q000503:physiopathology; D004292:Dominance, Cerebral / Q000502:physiology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D012039:Regional Blood Flow / Q000502:physiology; D013702:Temporal Lobe / Q000098:blood supply / Q000000981:diagnostic imaging* / Q000503:physiopathology; D015899:Tomography, Emission-Computed, Single-Photon; D014980:Xenon Radioisotopes
D014980:Xenon Radioisotopes