16 May 2019 Brain mapping determines each individual’s brain areas responsible for controlling such important functions as: Motor control of limbs; The ability to speak, read and solve mathematical problems. Some of the most important human brain functions have been mapped generically. However, there are large individual variations that make it difficult to locate the relevant areas safely before surgery on a patient with a brain tumour or injury. The development of functional resonance resulted in a substantial advance in this area, making it possible to ascertain the location of the so-called eloquent areas of the patient's brain pre-operatively. However... It has some technical limitations that prevent neurosurgeons from basing their evaluation in this type of exam; Its margin of error can reach 30 to 40%, which is unacceptable when a potentially disabling sequela is at stake. Mapping by direct electrical stimulation : Is the most effective way of locating the functionally important areas of the brain; Overcomes the above-mentioned problems. This technique is used to guide the neurosurgeon during surgery and reduce the probability of neurological sequelae. It also enables the surgeon to safely extend removal without fear of sequelae, thereby allowing more radical surgical treatments that significantly contribute to improving therapeutic results in tumours or other brain lesions . It is also possible to treat lesions that were considered inoperable due to their location in eloquent areas. This article was written with the support of physicians and other clinical professionals from the Hospital da Luz network. The content published in the Health Guide is intended for the general public and is provided for informational and educational purposes only. It does not replace individual medical assessment, diagnosis, or personalized clinical advice from a qualified healthcare professional. The content is produced or reviewed by physicians and other healthcare professionals at Hospital da Luz and is based on the knowledge available at the time of publication or the most recent update, as indicated at the beginning of each item.
