Cortical stimulation mapping
Encyclopedia
Cortical stimulation mapping (CSM) is a type of electrocorticography
which is used a method to determine the location in the brain where information of a certain kind is processed. Different parts of the brain are used for different functions; CSM attempts to find which part of the brain is responsible for certain behaviors in humans and other animals by briefly electrocuting a given part of the brain and determining what effect it has on the patient's behavior.
For instance, it's been observed that stimulation in Broca's area
can result in aphasia
symptoms even in individuals who do not have a speech impairment. Aphasia is a speech impairment which is caused by brain lesions in Broca's area and other areas of the brain. Stimulation to Broca's area disrupts its normal function, which causes the temporary aphasia.
Electrocorticography
Electrocorticography is the practice of using electrodes placed directly on the exposed surface of the brain to record electrical activity from the cerebral cortex. ECoG may be performed either in the operating room during surgery or outside of surgery...
which is used a method to determine the location in the brain where information of a certain kind is processed. Different parts of the brain are used for different functions; CSM attempts to find which part of the brain is responsible for certain behaviors in humans and other animals by briefly electrocuting a given part of the brain and determining what effect it has on the patient's behavior.
For instance, it's been observed that stimulation in Broca's area
Broca's area
Broca's area is a region of the hominid brain with functions linked to speech production.The production of language has been linked to the Broca’s area since Pierre Paul Broca reported impairments in two patients. They had lost the ability to speak after injury to the posterior inferior frontal...
can result in aphasia
Aphasia
Aphasia is an impairment of language ability. This class of language disorder ranges from having difficulty remembering words to being completely unable to speak, read, or write....
symptoms even in individuals who do not have a speech impairment. Aphasia is a speech impairment which is caused by brain lesions in Broca's area and other areas of the brain. Stimulation to Broca's area disrupts its normal function, which causes the temporary aphasia.