The work done in my laboratory is aimed at understanding the neural mechanisms underlying the processing of information that leads to the production of movements. For this purpose, we combine psychophysical and neuro-physiological approaches. The current projects concern (1) the neural mechanisms for encoding, and retrieving spatial information in working memory using memory scanning tasks, and (2) the effect of degree of uncertainty on the preparatory neural activity that precedes a movement.
(For a comprehensive list of recent publications, refer to PubMed, a service provided by the National Library of Medicine.)
Tzagarakis C, West S, Pellizzer G. Brain oscillatory activity during motor preparation: effect of directional uncertainty on beta, but not alpha, frequency band. Front Neurosci. 2015 Jul 21;9:246.
Tadipatri V.A., Tewfik A.H., Ashe J., Pellizzer G. and Gupta R. Movement direction decoding of local field potentials using time-evolving spatial patterns. IEEE/EMBS Conference on Neural Engineering 2011, 392-395.
Tadipatri V.A., Tewfik A.H., Ashe J., Pellizzer G. and Gupta R. Using topographical channel distribution to decode movement directions from Local Field Potentials. IEEE International Symposium on Biomedical Imaging: From Nano to Macro 2011, 1835-1838.
Gowreesunker B.V., Tewfik A.H., Tadipatri V.A., Ashe J., Pellizzer G. and Gupta R. (2011) A subspace approach to learning recurrent features from brain activity. IEEE Transactions on Neural Systems and Rehabilitation Engineering 19, 240-248.
Tadipatri V.A., Tewfik A.H., Ashe J. and Pellizzer G. Robust movement direction decoders from local field potentials using spatio-temporal qualitative patterns. IEEE Engineering in Medicine and Biology Society 2012, 4623-4626.
Tadipatri V.A., Tewfik A.H., Ashe J. and Pellizzer G. Source Localization Techniques for Direction Decoding from Local Field Potentials. IEEE Engineering in Medicine and Biology Society 2013, 838-841.
Tzagarakis C., Pellizzer G. and Rogers R.D. (2013) Impulsivity modulates performance under response uncertainty in a reaching task. Experimental Brain Research 225, 227-235.
Ince NF, Gupta R, Arica S, Tewfik AH, Ashe J, Pellizzer G. High accuracy decoding of movement target direction in non-human primates based on common spatial patterns of local field potentials. PLoS One. 2010 Dec 21;5(12):e14384.
Tadipatri VA, Tewfik AH, Gowreesunker B, Ashe J, Pellizzer G, Gupta R. Time robust movement direction decoding in Local Field Potentials using channel ranking. Conf Proc IEEE Eng Med Biol Soc. 2010;2010:4825-8.
Gowreesunker BV, Tewfik AH, Tadipatri VA, Ince NF, Ashe J, Pellizzer G. Overcoming measurement time variability in brain machine interface. Conf Proc IEEE Eng Med Biol Soc. 2009;2009:3134-7.
Ince NF, Goksu F, Pellizzer G, Tewfik A, Stephane M. Selection of spectro-temporal patterns in multichannel MEG with support vector machines for schizophrenia classification. Conf Proc IEEE Eng Med Biol Soc. 2008;2008:3554-7.
Pellizzer G, Stephane M. Response selection in schizophrenia. Exp Brain Res. 2007 Jul;180(4):705-14.
Stephane M, Pellizzer G, Fletcher CR, McClannahan K. Empirical evaluation of language disorder in schizophrenia. J Psychiatry Neurosci. 2007 Jul;32(4):250-8.
Stephane M, Pellizzer G. The dynamic architecture of working memory in schizophrenia. Schizophr Res. 2007 May;92(1-3):160-7.
Stephane M, Pellizzer G, Roberts S, McClannahan K. Computerized binary scale of auditory speech hallucinations (cbSASH). Schizophr Res. 2006 Dec;88(1-3):73-81.
Pellizzer G, Hedges JH, Villanueva RR. Time-dependent effects of discrete spatial cues on the planning of directed movements. Exp Brain Res. 2006 Jun;172(1):22-34.
Pellizzer G, Hedges JH. Motor planning: effect of directional uncertainty with continuous spatial cues. Exp Brain Res. 2004 Jan;154(1):121-6.