Changes of brainstem reflexes and evoked potentials in large frontal tumours

Intracranial space occupying lesions seems to influence electrophysiological functions of the brain and brainstem caused by perfusion disturbances due to mass-shift, stretching or/and compression of the corresponding pathways. In this study possible changes of brainstem reflexes and evoked potentials caused by large frontal tumours was examined. In 103 patients with histological different frontal tumours with a diameter >4cm and mostly accompanying oedema the electric elicited blinking-reflex (BR) the jaw-reflex (MR), the acoustic (BAEP), the flash induced visual (f-VEP) and the somatosensory (MSSEP) evoked pote…