Find A PhysicianHome  |  Library  |  myDownstate  |  Newsroom  |  A-Z Guide  |  E-mail  |  Contact Us  |  Directions
curve gif

SUNY Downstate Medical Center

Department of Psychiatry

Photo of Chella Kamarajan

Chella Kamarajan, PhD

Assistant Professor

Tel: (718) 270-2913

e-mail: chella.kamarajan@downstate.edu

  • About
  • Select Publications

Dr. Kamarajan is an assistant professor in the department of psychiatry, and is part of the Henri Begleiter Neurodynamics Laboratory (HBNL). He completed his PhD in clinical psychology from the National Institute of Mental Health and Neuro science (NIHHANS), a prestigious institute in India in 2001, and has expertise in mental health assessments and treatment, neuropsychology, and brain electrophysiology and neuroimaging. Since joining the HBNL in April 2002, he has been involved with neurophysiological research on alcoholism and related disorders, and has published several important research papers on brain abnormalities in individuals with substance use disorders and related conditions. Dr. Kamarajan has extensive experience in the methods and analyses of electroencephalogram (EEG), event-related potentials (ERPs) and event-related oscillations (EROs), in addition to his expertise in neuroimaging, signal processing, statistics, and computational programming. He has been a co-investigator on several NIH-funded projects on brain electrophysiology and neuroimaging at the SUNY Downstate Medical Center. He has successfully trained some of the psychiatry residents who had their research posting at the Neurodynamics Lab. He has also been involved in teaching statistics and research methodology to psychiatry residents (PGY-II).

Education & Training
  • 2002-2004 – Postdoctoral Research Fellow, Henri Begleiter Neurodynamics Lab, SUNY Downstate Medical Center, NY
  • 2000-2002 – Postdoctoral Clinical Fellow, National Institute of Mental Health and Neurosciences, Bangalore, India
  • 2001 – Ph.D. (Clinical Psychology), National Institute of Mental Health and Neurosciences, Bangalore, India (Dissertation: "Psychophysiological Correlates of Hypnosis in Functional Mental Disorders")
  • 1996 – M.Phil. (Medical and Social Psychology), Central Institute of Psychiatry, Ranchi, India (Dissertation: "Premorbid Personality and Life Events in Functional Mental Disorders: Toward Evolving a Causal Model")
  • 1993 – M.A. (Psychology), Annamalai University, Tamil Nadu, India
  • Kamarajan C, Pandey AK, Chorlian DB, Manz N, Stimus AT, Anokhin AP, Bauer LO, Kuperman S, Kramer J, Bucholz KK, Schuckit MA, Hesselbrock VM, Porjesz B (2015) Deficient Event-Related Theta Oscillations in Individuals at Risk for Alcoholism: A Study of Reward Processing and Impulsivity Features. PloS One, 10(11):e0142659. PMID: 26580209.
  • Kamarajan C, Pandey AK, Chorlian DB, Manz N, Stimus AT, Bauer LO, Hesselbrock VM, Schuckit MA, Kuperman S, Kramer J, Porjesz B (2015) Reward processing deficits and impulsivity in high-risk offspring of alcoholics: A study of event-related potentials during a monetary gambling task. International Journal of Psychophysiology, 98(2):182-200. PMID: 26388585.
  • Kamarajan C, Pandey AK, Chorlian DB, Porjesz B (2015) The use of current source density as electrophysiological correlates in neuropsychiatric disorders: A review of human studies. International Journal of Psychophysiology, 97(3):310-322. PMID: 25448264.
  • Kamarajan C, Porjesz B (2015) Advances in Electrophysiological Research. Alcohol Research: Current Reviews 37(1):53-87. PMID: 26259089.
  • Pandey AK, Kamarajan C, Manz N, Chorlian DB, Stimus A, Porjesz B (2015) Delta, theta, and alpha event-related oscillations in alcoholics during Go/NoGo task: Neurocognitive deficits in execution, inhibition, and attention processing. Progress in Neuro-Psychopharmacology and Biological Psychiatry, 65:158-171. PMID: 26456730.
  • Chorlian DB, Rangaswamy M, Manz N, Kamarajan C, Pandey AK, Edenberg H, Kuperman S, Porjesz B (2015) Gender modulates the development of theta event related oscillations in adolescents and young adults. Behavioural Brain Research. 292:342-352. PMID: 26102560.
  • Mukundan CR, Kamarajan C, Ajayan P, Roopesh BN, Sharma M (2013) The frontal cortex and recognition: Neurocognitive findings of hypnosis. Indian Journal of Health and Wellbeing, 4(4):703-710.
  • Kamarajan C, Porjesz B (2012) Brain waves in Impulsivity Spectrum Disorders, in Psychology of Impulsivity, Cyders MA (ed), pp. 20-93, Nova Science Publishers, Hauppauge, NY.
  • Kamarajan C, Rangaswamy M, Manz N, Chorlian DB, Pandey AK, Roopesh BN, Porjesz B (2012) Topography, power, and current source density of theta oscillations during reward processing as markers for alcohol dependence. Human Brain Mapping. 33:1019-1039. PMID: 21520344.
  • Pandey AK, Kamarajan C, Rangaswamy M, Porjesz B (2012a) Event-Related Oscillations in Alcoholism Research: A Review. Journal of Addiction Research & Therapy. Suppl 7:1-13. PMID: 24273686.
  • Pandey AK, Kamarajan C, Tang Y, Chorlian DB, Roopesh BN, Manz N, Stimus A, Rangaswamy M, Porjesz B (2012b) Neurocognitive deficits in male alcoholics: an ERP/sLORETA analysis of the N2 component in an equal probability Go/NoGo task. Biological Psychology. 89:170-182. PMID: 22024409.
  • Rao NR, Kodali R, Mian A, Ramtekkar U, Kamarajan C, Jibson MD (2012) Psychiatric residents' attitudes toward and experiences with the clinical-skills verification process: a pilot study on U.S. and international medical graduates. Academic Psychiatry, 36(4):316-322. PMID: 22851030.
  • Garrett M, Singh A, Amanbekova D, Kamarajan C (2011) Lack of insight and conceptions of "mental illness" in schizophrenia, assessed in the third person through case vignettes. Psychosis, 3(2):115-125.
  • Kamarajan C, Rangaswamy M, Tang Y, Chorlian DB, Pandey AK, Roopesh BN, Manz N, Saunders R, Stimus AT, Porjesz B (2010) Dysfunctional reward processing in male alcoholics: an ERP study during a gambling task. Journal of Psychiatric Research. 44:576-590. PMID: 20035952.
  • Roopesh BN, Rangaswamy M, Kamarajan C, Chorlian DB, Pandey AK, Porjesz B (2010) Reduced resource optimization in male alcoholics: N400 in a lexical decision paradigm. Alcoholism, Clinical and Experimental Research. 34:1905-1914. PMID: 20659074.
  • Kamarajan C, Porjesz B, Rangaswamy M, Tang Y, Chorlian DB, Padmanabhapillai A, Saunders R, Pandey AK, Roopesh BN, Manz N, Stimus AT, Begleiter H (2009) Brain signatures of monetary loss and gain: outcome-related potentials in a single outcome gambling task. Behavioural Brain Research. 197:62-76. PMID: 18775749.
  • Roopesh BN, Rangaswamy M, Kamarajan C, Chorlian DB, Stimus A, Bauer LO, Rohrbaugh J, O'Connor SJ, Kuperman S, Schuckit M, Porjesz B (2009) Priming deficiency in male subjects at risk for alcoholism: the N4 during a lexical decision task. Alcoholism, Clinical and Experimental Research. 33:2027-2036. PMID: 19764939.
  • Kamarajan C, Rangaswamy M, Chorlian DB, Manz N, Tang Y, Pandey AK, Roopesh BN, Stimus AT, Porjesz B (2008) Theta oscillations during the processing of monetary loss and gain: a perspective on gender and impulsivity. Brain Research. 1235:45-62. PMID: 18616934.
  • Chen AC, Porjesz B, Rangaswamy M, Kamarajan C, Tang Y, Jones KA, Chorlian DB, Stimus AT, Begleiter H (2007) Reduced frontal lobe activity in subjects with high impulsivity and alcoholism. Alcoholism, Clinical and Experimental Research. 31:156-165. PMID: 17207114.
  • Rangaswamy M, Jones KA, Porjesz B, Chorlian DB, Padmanabhapillai A, Kamarajan C, Kuperman S, Rohrbaugh J, O'Connor SJ, Bauer LO, Schuckit MA, Begleiter H (2007) Delta and theta oscillations as risk markers in adolescent offspring of alcoholics. International Journal of Psychophysiology. 63:3-15. PMID: 17129626.
  • Jones KA, Porjesz B, Chorlian D, Rangaswamy M, Kamarajan C, Padmanabhapillai A, Stimus A, Begleiter H (2006) S-transform time-frequency analysis of P300 reveals deficits in individuals diagnosed with alcoholism. Clinical Neurophysiology. 117:2128-2143. PMID: 16926113.
  • Kamarajan C, Porjesz B, Jones K, Chorlian D, Padmanabhapillai A, Rangaswamy M, Stimus A, Begleiter H (2006) Event-related oscillations in offspring of alcoholics: neurocognitive disinhibition as a risk for alcoholism. Biological Psychiatry. 59:625-634. PMID: 16213472.
  • Padmanabhapillai A, Porjesz B, Ranganathan M, Jones KA, Chorlian DB, Tang Y, Kamarajan C, Rangaswamy M, Stimus A, Begleiter H (2006a) Suppression of early evoked gamma band response in male alcoholics during a visual oddball task. International Journal of Psychophysiology. 60:15-26. PMID: 16019097.
  • Padmanabhapillai A, Tang Y, Ranganathan M, Rangaswamy M, Jones KA, Chorlian DB, Kamarajan C, Stimus A, Kuperman S, Rohrbaugh J, O'Connor SJ, Bauer LO, Schuckit MA, Begleiter H, Porjesz B (2006b) Evoked gamma band response in male adolescent subjects at high risk for alcoholism during a visual oddball task. International Journal of Psychophysiology. 62:262-271. PMID: 16887227.
  • Kamarajan C, Porjesz B, Jones KA, Choi K, Chorlian DB, Padmanabhapillai A, Rangaswamy M, Stimus AT, Begleiter H (2005a) Alcoholism is a disinhibitory disorder: neurophysiological evidence from a Go/No-Go task. Biological Psychology. 69:353-373. PMID: 15925035.
  • Kamarajan C, Porjesz B, Jones KA, Chorlian DB, Padmanabhapillai A, Rangaswamy M, Stimus AT, Begleiter H (2005b) Spatial-anatomical mapping of NoGo-P3 in the offspring of alcoholics: evidence of cognitive and neural disinhibition as a risk for alcoholism. Clinical Neurophysiology. 116:1049-1061. PMID: 15826845.
  • Porjesz B, Rangaswamy M, Kamarajan C, Jones KA, Padmanabhapillai A, Begleiter H (2005) The utility of neurophysiological markers in the study of alcoholism. Clinical Neurophysiology. 116:993-1018. PMID: 15826840.
  • Kamarajan C, Porjesz B, Jones KA, Choi K, Chorlian DB, Padmanabhapillai A, Rangaswamy M, Stimus AT, Begleiter H (2004) The role of brain oscillations as functional correlates of cognitive systems: a study of frontal inhibitory control in alcoholism. International Journal of Psychophysiology. 51:155-180. PMID: 14693365.
  • Mukundan CR, Ramachandra S, Singh N, Sharma M, Kamarajan C (1999) Brain mechanisms of hypnosis: P300 studies. Indian Journal of Clinical Psychology, 26(1):13.

« Back to Top