Awake surgery is usually used for tumor resection located in language areas. But patient's awakening during removal of mass lesions from motor areas can give additional opportunities. Besides checking of muscle contractions and integrity of motor fibers a surgeon in awake patient can assess planning of movements, praxis, visual feedback and vestibular processing of motions. Preserving of voluntary movements can be an additional proof that cortical motor centers and corticospinal tract were not damaged. At the moment there are no published results of randomized trials showing advantage of awake surgery in removal of mass lesions from motor brain areas.~Objective of the study is to determine whether resection of gliomas and metastases of motor areas using awake surgery can achieve rarer motor deterioration after operation than using general anesthesia.~Participants of the study will be randomly operated using awake surgery or general anesthesia. In both groups intraoperative neuromonitoring will be used. Dynamics of motor functions will be assessed before and after surgery by blinded neurologists.
Objective of the study is to determine whether resection of gliomas and metastases of motor areas using awake surgery can achieve rarer motor deterioration after operation than using general anesthesia.