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DTSTAMP:20250512T060933Z
DESCRIPTION:Next generation neural field modelling\n\nStephen Coombes\, Uni
 versity of Nottingham\n	Tuesday April 27\, 12-1pm\n	Zoom Link: https:/mcgill
 .zoom.us/j/91589192037\n\nAbstract: Neural mass models have been actively 
 used since the 1970s to model the coarse-grained activity of large populat
 ions of neurons and synapses. They have proven especially fruitful for und
 erstanding brain rhythms. However\, although motivated by neurobiological 
 considerations they are phenomenological in nature\, and cannot hope to re
 create some of the rich repertoire of responses seen in real neuronal tiss
 ue. In this talk I will discuss a simple spiking neuron network model that
  has recently been shown to admit to an exact mean-field description for s
 ynaptic interactions. This has many of the features of a neural mass model
  coupled to an additional dynamical equation that describes the evolution 
 of population synchrony. I will show that this next generation neural mass
  model is ideally suited to understanding beta-rebound. This is readily ob
 served in MEG recordings whereby motor action causes a drop in the beta po
 wer band attributed to a loss of network synchrony. Existing neural mass m
 odels are unable to capture this phenomenon (event related de-synchrony) s
 ince they do not track any notion of network coherence (only firing rate).
  I will spend the latter part of my talk discussing patterns and waves in 
 a spatially continuous non-local extension of this model\, highlighting it
 s usefulness for large scale cortical modelling.\n\nIf you would like a no
 t too technical heads-up about this and related work please see: Á Byrne\,
  R O’ Dea\, M Forrester\, J Ross and S Coombes 2020 Next generation neural
  mass and field modelling\, Journal of Neurophysiology\, Vol 123\, 726–742
  (https://doi.org/10.1152/jn.00406.2019)\n
DTSTART:20210427T160000Z
DTEND:20210427T170000Z
LOCATION:CA\, QC
SUMMARY:QLS Seminar Series - Stephen Coombes
URL:/qls/channels/event/qls-seminar-series-stephen-coo
 mbes-329958
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