CTN Seminar: Richard Naud (UOttawa)Export this event to calendar

Tuesday, February 22, 2022 2:30 PM EST

Title: Burstprop: a mechanistic theory for the orchestration of learning in cortex

Abstract:
Synaptic plasticity is believed to be a key physiological mechanism for learning. It is well established that it depends on pre- and postsynaptic activity. However, models that rely solely on pre- and postsynaptic activity for synaptic changes have, so far, not been able to account for learning complex tasks that demand credit assignment in hierarchical networks. Burstprop is a theory that exploit the fact that synaptic plasticity is regulated by high-frequency bursts of spikes, it allows pyramidal neurons higher in a hierarchical circuit to coordinate the plasticity of lower-level connections. Using simulations and mathematical analyses, we have demonstrated that, when paired with short-term synaptic dynamics, regenerative activity in the apical dendrites and synaptic plasticity in feedback pathways, a burst-dependent learning rule can solve challenging tasks that require deep network architectures. To end, I will provide a discussion on the biological plausibility of burstprop as a theory for the coordination of synaptic plasticity
in the brain.

Speaker's Website: http://www.neurodynamic.uottawa.ca/neuralcoding/index.html

S M T W T F S
28
29
30
31
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
  1. 2024 (4)
    1. April (1)
    2. March (2)
    3. February (1)
  2. 2023 (9)
    1. December (1)
    2. November (1)
    3. October (2)
    4. September (1)
    5. April (1)
    6. March (1)
    7. February (1)
    8. January (1)
  3. 2022 (6)
  4. 2021 (3)
  5. 2020 (4)
  6. 2019 (7)
  7. 2018 (4)
  8. 2017 (7)
  9. 2016 (8)
  10. 2015 (9)
  11. 2014 (6)
  12. 2013 (8)
  13. 2012 (4)

Brain Day 2023 Videos On-line

The videos from Brain Day 2023 are now available on line at our youtube channel. Hope you enjoy.

CTN Masters Student Graduate Sugandha Sharma Appears on Generally Intelligent Podcast

Sugandha Sharma, masters student graduate of the University of Waterloo's CTN, discusses her research and time in the laboratory of CTN Founding Director Chris Eliasmith as well as her current PhD research at MIT on the Generally Intelligent Podcast. Give it a listen.

Sue Ann Campbell Presents at International Conference on Mathematical Neurosci 2022

Sue Ann Campbell (Applied Math/CTN core member) recently presented "Modulation of Synchronization by a Slowly Varying Current"  in July 2022 at the International Conference on Mathematical Neuroscience; Watch it on YouTubesue ann campbell presentation image of spikes

CTN Research Day 2023 Oct 17 16:30 - 19:00 QNC 0101

The Centre for Theoretical Neuroscience will be hosting its second Research Day. This will be a chance to start the new academic year by getting re-acquainted with each other and the diversity of research conducted by CTN core and affiliate faculty. The format will be to have a number of CTN faculty share short overviews of their lab's and projects (16:30-17:30) and then, following a short coffee break (17:30-18:00), hear from a dozen current graduate students and post-docs giving short three minute talks on an aspect of their current research (18:00-19:00).

Bots and Beasts. New book by CTN Founding Member Paul Thagard

Paul Thagard, philosopher, cognitive scientist, Killam prize winner, and founding CTN member has a new book out: Bots and Beasts. bots and beasts book cover