Abstract: A method for locating a functional brain tissue by electrical stimulation includes performing electrical stimulations of different areas of the brain tissue to activate brain tissue regions identifying the functional brain tissue, recording an image or a video sequence of the brain tissue during and/or after a stimulation, comparing the recorded image or the video sequence with a reference image or a reference video sequence recorded without stimulation to determine a position of the brain tissue region that is activated by the stimulation. At least two stimulations of a plurality of electrical stimulations are performed, one directly after the other or simultaneously, and the recording of an image or a video sequence of the portion of brain tissue takes place during and/or after each performance of one of the at least two stimulations or during and/or after the simultaneous performance of the at least two stimulations.

Abstract: A method for locating a functional brain tissue by electrical stimulation includes performing electrical stimulations of different areas of the brain tissue to activate brain tissue regions identifying the functional brain tissue, recording an image or a video sequence of the brain tissue during and/or after a stimulation, comparing the recorded image or the video sequence with a reference image or a reference video sequence recorded without stimulation to determine a position of the brain tissue region that is activated by the stimulation. At least two stimulations of a plurality of electrical stimulations are performed, one directly after the other or simultaneously, and the recording of an image or a video sequence of the portion of brain tissue takes place during and/or after each performance of one of the at least two stimulations or during and/or after the simultaneous performance of the at least two stimulations.

Abstract: The invention is directed to an apparatus for finding a functional tissue area in a tissue region. The apparatus has a measurement illuminating device suitable for emitting measurement illumination to the tissue region and a camera which can capture light reflected by the tissue region. The camera has a green channel and/or a blue channel wherein there is a change in an optical property of the light reflected by the tissue region during the stimulation thereof which is undertaken at least intermittently. An evaluation unit captures the change in the optical property only by a signal of the green channel and/or of the blue channel of the camera. A display unit can display an output signal of the evaluation unit for the functional tissue area in the tissue region.

Abstract: The invention is directed to an apparatus for finding a functional tissue area in a tissue region. The apparatus has a measurement illuminating device suitable for emitting measurement illumination to the tissue region and a camera which can capture light reflected by the tissue region. The camera has a green channel and/or a blue channel wherein there is a change in an optical property of the light reflected by the tissue region during the stimulation thereof which is undertaken at least intermittently. An evaluation unit captures the change in the optical property only by a signal of the green channel and/or of the blue channel of the camera. A display unit can display an output signal of the evaluation unit for the functional tissue area in the tissue region.