[Crib-list] SPEAKER: Alexander Kell (MIT) | CRIBB Seminar talk | Friday, June 2, 2017 | TIME: 12:00 PM - 1:00 PM | Room 32-155

[daisymae@mit.edu]

 	COMPUTATIONAL RESEARCH in BOSTON and BEYOND SEMINAR


DATE:		FRIDAY, JUNE 2, 2017
TIME:		12:00 PM  1:00 PM
LOCATION:	Building 32, Room 155  (STATA)

 		Pizza and beverages will be provided at 11:45 AM
 		outside Room 32-155



TITLE:		Using deep learning to model and to understand
 		human auditory cortex


SPEAKER:	Alexander Kell  (MIT)


ABSTRACT:

A core goal of auditory neuroscience is to build quantitative models that 
predict cortical responses to real-world sounds. Reasoning that a complete 
model of auditory cortex must solve ecologically relevant tasks, we 
optimized a hierarchical neural network for speech and music recognition. 
The resulting network contained separate music and speech pathways 
following several shared processing stages, potentially replicating human 
cortical organization. The network, which performed both tasks as well as 
humans, exhibited human-like errors despite not being optimized to do so, 
suggesting common constraints on network and human performance. The 
network predicted fMRI voxel responses substantially better than 
traditional spectrotemporal filter models throughout auditory cortex. It 
also provided a quantitative signature of cortical representational 
hierarchy - primary and non-primary responses were best predicted by 
intermediate and late network layers, respectively. The results suggest 
that real-world tasks substantially constrain neural processing and 
behavior, and thus task optimization may provide a powerful approach for 
modeling sensory systems.

==================================================

Massachusetts Institute of Technology
Cambridge, MA


For information about the Computational Research in Boston and Beyond 
Seminar, please visit...


 			http://math.mit.edu/crib/



---
Shirley A. Entzminger
Administrative Assistant II
Department of Mathematics
Massachusetts Institute of Technology
77 Massachusetts Avenue
Building 2, Room 350A
Cambridge, MA 02139
PHONE:  (617) 253-4347
FAX:    (617) 253-4358
E-mail: daisymae at math.mit.edu
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Seminar-Poster - Alexander_Kell - Friday,	June2-2017.pdf
Type: application/pdf
Size: 1152272 bytes
Desc: 
Url : http://mailman.mit.edu/pipermail/crib-list/attachments/20170530/882129e3/attachment.pdf