Nickel J, Jörgens S, Bussfeld P, Seitz RJ. Asymptomatic motor cortex displacement due to a giant arachnoid cyst.
Neurocase 2007;
13:328-33. [PMID:
18781430 DOI:
10.1080/13554790701849910]
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Abstract
Cerebral lesions are held to induce plastic changes of the brain. Less well established, however, is how much space-occupying brain lesions may only displace functional representations. In a 66-year-old man we show, by means of functional magnetic resonance imaging and transcranial magnetic stimulation, a profound displacement of the motor cortex due to a large asymptomatic arachnoid cyst. Thus, the chronically compressed brain is capable of sustaining normal brain function without utilizing the potential of cortical plasticity.
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