• 1
  • 2
  • 5
  • 6
  • 7
  • 8
  • 9
  • 3
  • 4

“School of Cognitive Sciences”

Back to Papers Home
Back to Papers of School of Cognitive Sciences

Paper   IPM / Cognitive Sciences / 7570
School of Cognitive Sciences
  Title:   Computational Behavior of Neuron Pools in Thalamous and Low level Cortical Areas During Visual attention
1 . R. Rajimehr
2 . L. Montaser Kouhsari
  Status:   In Proceedings
  Proceeding: GCSS
  Year:  2001
  Supported by:  IPM
We could assume two different neuron pools, one in the thalamus and another in the low level cortical areas, which consist of neurons with normal distribution for their thresholds. As Crick theory for visual attention, neuron pool of thalamus acts as the site of saliency map representation resulting from different modes of thalamic response. Thalamic reticular nucleus determines which thalamic cells should produce bursting response, which these cells are corresponded with salient location. Saliency information of a location is encoded to the cortical neuron pool. Enhancement of spatial resolution at the attended location occurs in the cortical neuron pool. The computational behavior of these neuron pools during an attentional task like cueing paradigm is studied in this paper. Our analysis has a statistical method for studying the distribution of thresholds in the neuron pools. Computer simulation confirms the computational events in the neuron pools, which are proposed for the modeling of cueing effect. The final aim of modeling is producing a saliency map for attended location. This map will lead to increase in gain and sharper tuning at the location of attention. Winner Take All network at higher cortical areas selects information of attended area, which its main result is priming of a location and benefit of attention

Download TeX format
back to top
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
Clients Logo
scroll left or right