University Clinic Dusseldorf 1 article published in JoVE Behavior Combined Invasive Subcortical and Non-invasive Surface Neurophysiological Recordings for the Assessment of Cognitive and Emotional Functions in Humans Carlos Trenado1, Saskia Elben2, David Petri2, Jan Hirschmann2, Stefan J. Groiss1,2, Jan Vesper3, Alfons Schnitzler1,2, Lars Wojtecki1,2 1Institute of Clinical Neuroscience and Medical Psychology, Medical Faculty, Heinrich-Heine-University, 2Department of Neurology, Center for Movement Disorders and Neuromodulation, University Clinic Düsseldorf, 3Department of Neurosurgery, Functional Neurosurgery and Stereotaxy, Center for Movement Disorders and Neuromodulation, University Clinic Düsseldorf The present protocol aims at assessing cognitive-emotional functions in the basal ganglia by simultaneous neurophysiological recording of local field potentials and non-invasive brain cortical activity (EEG). The procedure is exemplified by the use of paradigms involving speech stimuli with emotional connotation or the Flanker task involving cognitive control.