Cancelled. To Be Rescheduled. Stephanie Palmer: How behavioral and evolutionary constraints sculpt early visual processing

Mon, Feb 17, 2020, 12:00 pm
Location: 
Joseph Henry Room Jadwin Hall
Speaker(s): 
Sponsor(s): 
CPBF an NSF PFC

While efficient coding has been a successful organizational principle in visual neuroscience, to make a more general theory behavioral, mechanistic, and even evolutionary constraints need to be added to this framework. In our work, we use a mix of known computational goals and detailed behavioral measurements to add constraints to the notion of 'optimality' in vision. Accurate visual prediction is one such constraint. Prediction is essential for interacting fluidly and accurately with our environment because of the delays inherent to all brain circuits. In our work, we explore how our visual system makes these predictions, starting as early as the eye. We use techniques from statistical physics and information processing to assess how efficient, predictive vision emerges from these imperfect component parts. To test whether the visual system performs optimal predictive compression and computation, we compute the past and future stimulus information in populations of retinal ganglion cells, and in the vertical motion sensing system of the fly. In the fly, we anchor our calculations with published measurements of fast evasive flight maneuvers. This survival-critical behavior requires fast and accurate control of flight, which we show can be achieved by visual prediction via a specific wiring motif involving gap junction coupling. Developing a general theory of the evolution of computation is also a current research direction in our group. We use the repeated evolution of tetra-chromatic color vision in butterflies to test hypotheses about whether extant neural computations contain shadows of the evolutionary history of the organism.

Andrew York: A bolt-on single-objective light-sheet design with uncompromised numerical aperture

Mon, Feb 24, 2020, 12:00 pm

Spinning disk confocal modules are “core facility friendly”; they insert conveniently between a commercial microscope base and camera, improve...

Location: Joseph Henry Room Jadwin Hall

Andreas Gahlman: TBD

Mon, Mar 9, 2020, 12:00 pm
Location: Joseph Henry Room Jadwin Hall

Andreas Gahlmann: Visualizing Bacterial Physiology at High Resolution using Single-Molecule Tracking and Lattice-Light Sheet Microscopy

Mon, Mar 9, 2020, 12:00 pm

Our lab develops new imaging approaches for visualizing bacterial physiology in relevant contexts: We use live-cell single-molecule localization...

Location: Joseph Henry Room Jadwin Hall

CPBF undergraduate outreach at CUNY

Fri, Mar 13, 2020, 1:30 pm to 4:00 pm
Location: Science Center (4102) at The Graduate Center. 365 Fifth Avenue, New York

Allan Drummond: Evolution of low-complexity protein regions implicated in biomolecular condensation

Na Ji: Imaging the brain at high spatiotemporal resolution

Mon, Mar 23, 2020, 12:00 pm

To understand computation in the brain, one needs to understand the input-output relationships for neural circuits and the anatomical and...

Location: Joseph Henry Room Jadwin Hall

Stefano Allesina: TBD

Mon, Mar 30, 2020, 12:00 pm
Location: Joseph Henry Room Jadwin Hall

Justin Kinney: Massively parallel assays, machine learning, and the biophysics of gene regulation

Mon, Apr 6, 2020, 12:00 pm

Gene expression in all organisms is controlled by short DNA and RNA sequences called cis-regulatory elements (CREs).

Location: Joseph Henry Room Jadwin Hall

David Van Valen: Deep learning for single cell biology

Mon, Apr 13, 2020, 12:00 pm

The study of living systems is challenging because of their high dimensionality, spatial and temporal heterogeneity, and high degree of...

Location: Joseph Henry Room Jadwin Hall

Problems in neural and cognitive computation

Fri, Apr 17, 2020, 10:00 am

Using food-caching birds to study the neuroscience of episodic memory
Dmitriy Aronov, Columbia University

Location: Segal Theater at The Graduate Center. 365 Fifth Avenue, New York

Seppe Kuehn: TBD

Mon, Apr 20, 2020, 12:00 pm
Location: Joseph Henry Room Jadwin Hall

Gurol Suel: TBD

Mon, Apr 27, 2020, 12:00 pm
Location: Joseph Henry Room Jadwin Hall