Ann-Katrin OhlerthMax Planck Institute for Psycholinguistics | MPI · Neurobiology of Language Department
Ann-Katrin Ohlerth
Ph.D. Neurolinguistics
About
15
Publications
2,790
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126
Citations
Introduction
Skills and Expertise
Additional affiliations
September 2017 - present
University of Groningen
Position
- PhD Student
September 2016 - August 2017
April 2013 - July 2013
Education
September 2014 - August 2016
September 2014 - August 2016
September 2014 - August 2016
Publications
Publications (15)
Tumor‐related motor reorganization remains unclear. Navigated transcranial magnetic stimulation (nTMS) can investigate plasticity non‐invasively. nTMS‐induced motor‐evoked potentials (MEPs) of different muscles are commonly used to measure the center of gravity (CoG), the location with the highest density of corticospinal neurons in the precentral...
Gliomas are brain tumors infiltrating healthy cortical and subcortical areas that may host cognitive functions, such as language. If these areas are damaged during surgery, the patient might develop word retrieval or articulation problems. For this reason, many glioma patients are operated on awake, while their language functions are tested. For th...
Visual object naming (vON) is the most commonly applied linguistic test during awake surgeries with electrical stimulation mapping. Little is known about the predictive value of general preoperative linguistic and cognitive function for the intraoperative object naming ability of the patient. We aimed at analyzing these correlations, in order to po...
Background
Perioperative assessment of language function in brain tumor patients commonly relies on administration of object naming during stimulation mapping. Ample research, however, points to the benefit of adding verb tasks to the testing paradigm in order to delineate and preserve postoperative language function more comprehensively. This rese...
Visualization of functionally significant subcortical white matter fibers is needed in neurosurgical procedures in order to avoid damage to the language network during resection. In an effort to achieve this, positive cortical points revealed during preoperative language mapping with navigated transcranial magnetic stimulation (nTMS) can be employe...
Preoperative language mapping with navigated transcranial magnetic stimulation (nTMS) is currently based on the disruption of performance during object naming. The resulting cortical language maps, however, lack accuracy when compared to intraoperative mapping. The question arises whether nTMS results can be improved, when another language task is...
Navigated Transcranial Magnetic Stimulation (nTMS) is used to understand the cortical organization of language in preparation for the surgical removal of a brain tumor. Action naming with finite verbs can be employed for that purpose, providing additional information to object naming. However, little research has focused on the properties of the ve...
The objective of this systematic review is to create an overview of the literature on the comparison of navigated transcranial magnetic stimulation (nTMS) as a mapping tool to the current gold standard, which is (intraoperative) direct cortical stimulation (DCS) mapping. A search in the databases of PubMed, EMBASE, and Web of Science was performed....
Background:
The human white matter pathway network is complex and of critical importance for functionality. Thus, learning and understanding white matter tract anatomy is important for the training of neuroscientists and neurosurgeons. The study aims to test and evaluate a new method for fiber dissection using augmented reality (AR) in a group whi...
Background
Protocols for intraoperative language mapping with direct electrical stimulation (DES) often include various language tasks triggering both nouns and verbs in sentences. Such protocols are not readily available for navigated transcranial magnetic stimulation (nTMS), where only single word object naming is generally used. Here, we present...
Planning surgeries on patients with tumors in eloquent areas can be aided by pre-surgical language mapping using the new technique of navigated Transcranial Magnetic Stimulation (nTMS). In our pilot study, we refined the task paradigm used during the stimulation by implementing action naming next to the gold standard object naming. We proved that t...