Between the two parts of the cerebral cortex(adjective)
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Use "transcortical" in a sentence
"I'm afraid if it was my little girl, I'd have to recommend high velocity transcortical lead therapy."
"Frontal lobe hypofunction, loss of temporal and transcortical metabolic patterns should correlate with full tracking neuropsychological testing and QEEG voltage patterns and coherence pattern analysis of intercortical frequencies."
"Aphasia and loss of expressive speech functions with vaccinations is called "isolation of speech syndrome" or "transcortical motor aphasia.""