VISUAL FORM PROCESSING


Invariant visual shape coding
w/ Anitha Pasupathy @ University of Washington
Measured neuronal responses in area V4 to shapes at different scales and positions. [PubMed]



Recognition of partially occluded objects
w/ Anitha Pasupathy @ University of Washington
Examined the contribution of neuronal responses in area V4 to the discrimination of occluded shapes. [PubMed] [PubMed] [UW Press]

Neuronal responses to visual texture
w/ Tony Movshon @ New York University
Measured neuronal responses in area V2 to texture-defined and luminance-defined form. [PubMed]

Development of visual texture perception
w/ Lynne Kiorpes & Tony Movshon @ New York University
Studied the developmental trajectory of behavioral sensitivity to texture-defined form. [PubMed]



VISUAL MOTION PROCESSING


Spatiotemporal limits of pattern motion sensitivity
w/ Tony Movshon @ New York University
Measured neuronal responses in area MT to patterns with spatially/temporally interleaved motion cues. [Pubmed]



Visual motion processing in amblyopia
w/ Lynne Kiorpes & Tony Movshon @ New York University
Studied neuronal responses in area MT in subjects with experimentally-induced amblyopia. [PubMed] [NYU Press]



NEURAL CIRCUIT DISSECTION




Functional identification of projection neurons
w/ Tony Movshon @ New York University
Identified neurons in area V1 that project to area V2 using antidromic electrical stimulation. [PubMed]




Targeting primate neural circuits with viral vectors
w/ Greg Horwitz @ University of Washington
Reviewed genetic strategies for targeting specific primate neural pathways and cell types. [PubMed]

Humoral immune responses to AAV vector injections 

w/ Greg Horwitz @ University of Washington
Measured antibodies to AAV before and after vector injections into the primate CNS [PubMed]

Cell type specific primate optogenetics
w/ Greg Horwitz @ University of Washington

Achieved selective optogenetic control of Purkinje cells [PubMed] [UW Press]

Throughout my doctoral and postdoctoral training, I have studied vision and neurons using a variety of experimental techniques, [work summarized above]As for future directions, here are some questions I'd like to pursue:
    • The contribution of distinct neural pathways and cell types to visual shape processing in the cerebral cortex.
    • Directing genetic manipulations of neural activity to specific cell types in wild-type primate with viral vectors.