[CTN] CTN Seminar: Subutai Ahmad (Numenta, Inc.) Tuesday October 2, 3:30 E5 6127

[Bryan Tripp]

Hi everyone,

Please join us next week for the first CTN seminar of the fall. The speaker
is Subutai Ahmad, VP of Research at Numenta. The title and abstract follow.

Please note that because the CTN has moved, this talk is not in the usual
room, but in Engineering 5 Room 6127.

CTN graduate students are invited to lunch with the speaker at 12:00. If
you are interested, please contact Peter Duggins (psipeter at gmail.com).

Bryan


Have We Missed Half of What the Neocortex Does? A New Predictive Framework
Based on Cortical Grid Cells

Subutai Ahmad, Numenta, Inc.

How the neocortex works is a mystery. Traditional feed forward models of
perception cannot account for the vast majority of cortical connections. In
this talk, I will describe a theory that sensory regions of the neocortex
process two inputs. One input is the well-known sensory data arriving via
thalamic relay cells. The second is an allocentric representation of
location, which we propose is derived from motion inputs in the
sub-granular layers of each cortical column. The allocentric location
represents where a sensed feature is relative to the object being sensed.
As the sensors move, cortical columns learn complete predictive models of
objects by integrating feature and location representations over time. We
propose a theory where the location signal is derived in each column using
the same principles as grid cells in the entorhinal cortex. In this
proposal, individual cortical columns are able to model complete objects
and are far more powerful than currently believed. I will discuss our
model, the mechanisms, and the implications for hierarchy and cortical
function.
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