Electrostimulation mapping of spatial neglect.

Background: Cortical and subcortical electrostimulation mapping during awake brain surgery for tumor removal is usually used to minimize deficits.

Objective: To use electrostimulation to study neuronal substrates involved in spatial awareness in humans.

Methods: Spatial neglect was studied using a line bisection task in combination with electrostimulation mapping of the right hemisphere in 50 cases.

Anatomical correlates for category-specific naming of living and non-living things.

Introduction: Selective naming categories impairments for living and non-living things are widely reported in brain damaged patients. Electrostimulation mapping was used to study the possible anatomical segregation of living/non-living categories in a prospective series of patients operated on for tumor removal.

Materials And Methods: Fifty brain mappings (patients with no language impairment; range: 14-80 years; mean: 48 years; 26 males; 5 left handed) were performed in 46 left and 4 right hemispheres using two linguistically controlled tasks (naming for living and non-living things) during an awake surgery procedure.

Cortical calculation localization using electrostimulation.

Object: A naming task has been used to spare cortical areas involved in language. In the present study, a calculation task was combined with electrostimulation mapping (awake surgery) to spare cortical areas involved in calculation in patients undergoing surgery for brain lesions. The organization of language and calculation areas was analyzed in relation to these surgical data.