Publication


Featured researches published by Mark S. George.


Clinical Neurophysiology | 2003

A TMS coil positioning/holding system for MR image-guided TMS interleaved with fMRI

Daryl E. Bohning; Stewart Denslow; P.A Bohning; John Walker; Mark S. George

OBJECTIVE Transcranial magnetic stimulation (TMS) can be interleaved with fMRI to visualize regional brain activity in response to direct, non-invasive, cortical stimulation, making it a promising tool for studying brain function. A major practical difficulty is accurately positioning the TMS coil within the MRI scanner for stimulating a particular area of brain cortex. The objective of this work was to design and build a self-contained hardware/software system for MR-guided TMS coil positioning in interleaved TMS/fMRI studies. METHODS A compact, manually operated, articulated TMS coil positioner/holder with 6 calibrated degrees of freedom was developed for use inside a cylindrical RF head coil, along with a software package for transforming between MR image coordinates, MR scanner space coordinates, and positioner/holder settings. RESULTS Phantom calibration studies gave an accuracy for positioning within setups of dx=+/-1.9 mm, dy=+/-1.4 mm, dz=+/-0.8 mm and a precision for multiple setups of dx=+/-0.8 mm, dy=+/-0.1 mm, dz=+/-0.1 mm. CONCLUSIONS This self-contained, integrated MR-guided TMS system for interleaved TMS/fMRI studies provides fast, accurate location of motor cortex stimulation sites traditionally located functionally, and a means of consistent, anatomy-based TMS coil positioning for stimulation of brain areas without overt response.


Archive | 2005

Systems and methods for detecting deception by measuring brain activity

Ananda Shastri; Stephen J. Nelson; Daryl E. Bohning; Mark S. George; Frank A. Kozel


Archive | 2004

Method, apparatus, and system for automatically positioning a probe or sensor

Mark S. George; Daryl E. Bohning


Archive | 2003

Method, apparatus and system for determining effects and optimizing parameters of vagus nerve stimulation

Mark S. George; Daryl E. Bohning; Ziad Nahas


Archive | 2002

System and method for detecting deception

Ananda Shastri; Steve Nelson; Daryl E. Bohning; Mark S. George; Frank A. Kozel


Archive | 2012

Research Article LONG-TERM EFFICACY OF REPEATED DAILY PREFRONTAL TRANSCRANIAL MAGNETIC STIMULATION (TMS) IN TREATMNT-RESISTANT DEPRESSION

Antonio Mantovani; Martina Pavlicova; David H. Avery; Ziad Nahas; William M. McDonald; Chandra Wajdik; Paul E. Holtzheimer; Mark S. George; Harold A. Sackeim; Sarah H. Lisanby


Clinical Neurophysiology | 2011

PTMS34 Imaging the neural correlates of transcranial magnetic stimulation induced neglect in healthy participants

R. Ricci; A. Salatino; X. Li; J.J. Taylor; Q. Mu; Daryl E. Bohning; Mark S. George


Archive | 2005

Systeme und verfahren zur detektion von täuschung mittels messung der gehirnaktivität

Ananda Shastri; Stephen J. Nelson; Daryl E. Bohning; Mark S. George; Frank A. Kozel


Magnetic Stimulation in Clinical Neurophysiology (Second Edition) | 2005

Chapter 21 – Potential Therapeutic Uses of Transcranial Magnetic Stimulation in Psychiatric Disorders

Mark S. George; Ziad Nahas; F. Andrew Kozel; Xingbao Li; Kaori Yamanaka; Alexander Mishory; Sarah Hill; Daryl E. Bohning


Archive | 2004

BRIEF COMMUNICATIONS A Replication Study of the Neural Correlates of Deception

Frank A. Kozel; Ralph H. Johnson; Tamara M. Padgett; Mark S. George

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