EN
Moryś, J., Słoniewski, P. and Narkiewicz, O.: Somatosensory eyoked potentials following lesions of the claustrum. Acta physiol, pol., 1988; 39(5-6): 475-483. Ipsi- and contralateral cortical somatosensory evoked potentials (SEP) were recorded following median nerve stimulation in 12 patients with unilateral brain lesions and in 5 healthy subjects. Computed tomographic scans of brain were performed on admission. In all pa,tients with lesions of the claustrum there was absence of .SEP contralateral to the side of the lesion and ipsilateral to the stimulated nerve. This phenomenon did not appear in our material following lesions involving other structures e.g. thalamus от somatosensory cortex. Our observations suggest that the claustrum may influence deeply the contralateral somatosensory cortex. This may be due to the fact that a large part of the claustrum is involved in transmission of the sensory information from receptors to the somatosensory cortex.