Losonczy Lab

at the Mortimer Zuckerman Mind Brain and Behavior Institute

Andres Grosmark

Postdoctoral Fellow

Email: ag3633 AT cumc DOT columbia DOT edu


Research Interests:

Neural dynamics underpinning the formation of ‘on-line’ spatial representations and their ‘off-line’ replay  



2015 – Present

Columbia University – Post-Doctoral Fellow with Dr. Atilla Losonczy


New York University – Post-Doctoral Fellow with Dr. György Buzsáki

2007- 2014

Rutgers University – Behavioral Neuroscience Program
-Ph.D. in Neuroscience, Ph.D. Advisor: Dr. György Buzsáki

2002- 2006

Duke University, Cum Laude
Bachelor of Science with Honors in Biology with a concentration in Neuroscience, Bachelor of Arts in Philosophy





Z. Chen, A.D. Grosmark, H. Penagos & M.A. Wilson. Uncovering representations of sleep-associated hippocampal ensemble spike activity. Scientific reports, 2016, (6):32193.

A.D. Grosmark, G. Buzsáki. Diversity in neural firing dynamics supports both rigid and learned hippocampal sequences. Science, 2016, (6280):1440-3.

C. Rossant, S.N. Kadir , D.F. Goodman, J. Schulman, M.L. Hunter, A.B. Saleem, A. Grosmark, M. Belluscio, G.H. Denfield,Ecker AS, A.S. Tolias, Solomon S, G. Buzsáki, M. Carandini, K.D. Harris. Spike sorting for large dense electrode arraysNat. Neurosci, 2016. (4):634-41.



A. Grosmark, K. Mizuseki, E. Pastalkova, K. Diba, G. Buzsáki. REM sleep reorganizes hippocampal excitability. Neuron. 2012. 75(6): p.1001-7. (Faculty of 1000 recommended article).

M. Vandecasteele, S. Royer, M. Belluscio, A. Berényi, K. Diba, S. Fujisawa, A. Grosmark, D. Mao, K. Mizuseki, J. Patel, E. Stark, D. Sullivan, B. Watson, G. Buzsáki. Large-scale recording of neurons by movable silicon probes in behaving rodents. Journal of Visualized Experiments:JoVE, 2012. (61): e3568.
K. Dzirasa, S. Ribeiro, R.M. Costa, L.M. Santos, S.C. Lin, A. Grosmark, T.D. Sotnikova, R.R. Gainetdinov, M.G. Caron, M.A.L. Nicolelis. Dopaminergic control of sleep- wake states. Journal of Neuroscience, 2006. 26(41): p.10577-89


F. Sahin, W. Qiu, R.E. Wilentz, C.A. Iacobuzio-Donahue, A. Grosmark, G.H. Su. RPL38, FOSL1 , and UPP1 are predominantly expressed in the pancreatic ductal epithelium. Pancreas . 2005 March; 30(2): 158–167.



2011 – Minority Biomedical Research Fellow

2008 – Sloan Minority Ph.D. Fellowship

2007 – Rutgers Presidential Graduate Fellow