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Associate Professor, The Vivian L. Smith Department of Neurosurgery

Epilepsy and Brain Tumor Surgeon
Memorial Hermann-Texas Medical Center

Education & Training

• Medical Degree:
  Armed Forces Medical College, Pune, India
• Internship:
  Mayo Clinic, Rochester, Minnesota
• Residency:
  The University of Texas Health Science Center at San Antonio, San Antonio, Texas
• Fellowship in Neurosurgery:
  Washington University, Seattle, Washington
• Fellowship in Epilepsy:
  Cleveland Clinic, Cleveland, Ohio
• Post-Doc, Human Neuroimaging:
  The University of Texas Health Science Center at San Antonio, San Antonio, Texas

Specialties

Clinical

• Epilepsy surgery including placement of subdural grid electrodes, amygdalo-hippocampectomy, anterior temporal lobectomy, neo-cortical resections
• Brain mapping and awake craniotomies
• Brain tumor surgery, including: tumors in speech and motor cortex, insular tumors, intra-ventricular tumors, pineal tumors, pituitary and para-sellar tumors
• Cavernous malformation (cavernoma) surgery
• Micro-vascular decompression for trigeminal neuralgia
• General Neurosurgery

Research

• Brain mapping with functional MRI, electrical stimulation and diffusion tractography
• Intra-cranial electrophysiology

Board Certifications

• American Board of Neurological Surgery

Selected Bibliography

Lab Research Publications

• Conner CR, Ellmore TM, DiSano MA, Pieters TA, Potter A, Tandon N: Comparative assessments of anatomic and electro-physiologic connectivity in the language system. Computers in Biology and Medicine (in press).
• Conner CR, Ellmore TM, Pieters T, Tandon N: Variability of the relationship between Electrophysiology and BOLD-fMRI across Cortical Regions in Humans: Journal of Neuroscience 31(36): 12855-12865, Sept 7, 2011.
• Tertel K, Tandon N, Ellmore TM: Probing brain connectivity by combined analysis of diffusion MRI tractography and electrocorticography. Computers in Biology and Medicine (in press).
• Khursheed F, Tandon N, Tertel K, Pieters TA, Disano MA, Ellmore TM. Frequency specific electrocorticographic correlates of working memory delay period fMRI activity. Neuroimage Jun 1; 56(3): 1773-82, 2011.
• Ellmore TM, Pieters TA, Tandon N: Dissociation between Diffusion MR Tractography Density and Strength in Epilepsy Patients with Hippocampal Sclerosis. Epilepsy Research 93(2-3): 197-203, Feb 2011.
• Ellmore TM, Beauchamp MS, Breier JI, Slater JD, Kalamangalam GP, O'Neill TJ, Disano MA, Tandon N: Temporal Lobe White Matter Asymmetry and Language Laterality in epilepsy patients. Neuroimage. 2010 Feb 1;49(3):2033-44.
• Swann N, Tandon N, Canolty R, Ellmore TE, McEvoy L, Dreyer SE, DiSano M, Aron AR - Intracranial EEG reveals time-specific and frequency-specific role for right inferior frontal gyrus and primary motor cortex in stopping initiated responses. Journal of Neuroscience • 29(40): 12675–12685, October 7, 2009.
• Ellmore TM, Beauchamp MS, O’Neill TJ, Dreyer SE, Tandon N. Relationships between Essential Cortical Language Sites and Subcortical Pathways: Journal of Neurosurgery 111:755–766, Oct 2009.
• Fox PT, Narayana S, Tandon N, Fox SP, Sandoval H, Kochunov P, Capaday C, Lancaster JL. Intensity modulation of TMS-induced cortical excitation: primary motor cortex. Hum Brain Mapp. 2006 Jun;27(6):478-87.
• Fox PT, Naryana S, Tandon N, Sandoval H, Fox SP, Kochunov P, Lancaster JL: Column-based model of electric field excitation of cerebral cortex. Human Brain Mapping 22(1):1-14, May 2004.
• Tandon N, Narayana S, Lancaster J, Brown S, Dodd S, Vollmer DG, Ingham J, Ingham R, Liotti M, Fox PT: CNS Resident Award: Role of the lateral premotor cortex in articulation. Clinical Neurosurgery 50:341-349, 2003.

Clinical research publications

• Kalamangalam GP, Tandon N, Saria HY, Slater JD: Asymmetric scalp EMG: A common and accurate lateralizing sign in motor seizures. Jn. of Clinical Neurophysiology (in press)
• Tandon N: Mapping of human language In: Yoshor and Mizrahi eds. Clinical Brain Mapping: A practical approach, McGraw Hill 2011 (in press)
• Tandon N. Cortical Mapping by Electrical Stimulation of Subdural Electrodes: Language areas. In: Luders HO, ed. Textbook of Epilepsy Surgery. New York, NY, Informa HealthCare, 1001-1015. 2008.
• Tandon N, Alexopoulos AV, Warbel A, Najm IM, Bingaman WE: Occipital Epilepsy: spatial categorization and surgical management. Journal of Neurosurgery 110(2) Feb 2009.
• Andreas Alexopoulos, Nitin Tandon. Basal Frontal Lobe Epilepsy. “Textbook of Epilepsy Surgery”. Hans Luders, (editor) 2008.
• Tandon N, O'Neill TJ, Vollmer DG, Wang M: Intra-ventricular occurrence of a melanocytoma. Journal of Neurosurgery 109:480-485, 2008.
• Luders HO, Acharya J, Alexopoulos A, Baumgartner C, Bautista J, Burgess R, Carreno M, Diehl B, Dinner D, Ebner A, Foldvary N, Godoy J, Hamer H, Ikeda A, Kallen K, Kellinghaus C, Kotagal P, Lachhwani D, Loddenkemper T, Mani J, Matsumoto R, Moddel G, Nair D, Noachtar S, O'Donovan CA, Rona S, Rosenow F, Schuele S, Szabo CA, Tandon N, Tanner A, Widdess-Walsh P. Are epilepsy classifications based on epileptic syndromes and seizure types outdated? Epileptic Disorders 8(1):81-5, 2006.
• Tandon N, Vollmer DG, New PZ, Hevezi JM, Herman T, Kagan-Hallet K, West GA. Fulminant radiation necrosis induced by stereotactic radiation therapy to the posterior fossa. Journal of Neurosurgery 95:507-512, 2001.