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Invasive Versus Non‐invasive Mapping of the Motor Cortex by Carolin Weiss Lucas; Charlotte Nettekoven; Volker Neuschmelting; Ana‐Maria Oros‐Peusquens; Gabriele Stoffels; Shivakumar Viswanathan; Anne K. Rehme; Andrea Maria Faymonville; N. Jon Shah; Karl Josef Langen; Roland Goldbrunner; Christian Grefkes is a Neuroscience article available to read on EtoBox.

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## Abstract Precise and comprehensive mapping of somatotopic representations in the motor cortex is clinically essential to achieve maximum resection of brain tumours whilst preserving motor function, especially since the current gold standard, that is, intraoperative direct cortical stimulation (DCS), holds limitations linked to the intraoperative setting such as time constraints or anatomical restrictions. Non‐invasive techniques are increasingly relevant with regard to pre‐operative risk‐assessment. Here, we assessed the congruency of neuronavigated transcranial magnetic stimulation (nTMS) and functional magnetic resonance imaging (fMRI) with DCS. The motor representations of the hand, the foot and the tongue regions of 36 patients with intracranial tumours were mapped pre‐operatively using nTMS and fMRI and by intraoperative DCS. Euclidean distances (ED) between hotspots/centres of gravity and (relative) overlaps of the maps were compared. We found significantly smaller EDs (11.4 ± 8.3 vs. 16.8 ± 7.0 mm) and better spatial overlaps (64 ± 38% vs. 37 ± 37%) between DCS and nTMS compared with DCS and fMRI. In contrast to DCS, fMRI and nTMS mappings were feasible for all regions an

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Author

Carolin Weiss Lucas; Charlotte Nettekoven; Volker Neuschmelting; Ana‐Maria Oros‐Peusquens; Gabriele Stoffels; Shivakumar Viswanathan; Anne K. Rehme; Andrea Maria Faymonville; N. Jon Shah; Karl Josef Langen; Roland Goldbrunner; Christian Grefkes

Publisher

Wiley

Published

2020

Language

EN

Field

Neuroscience (Life Sciences)