Using topographic networks to build a representation of consciousness.
The subject of consciousness has intrigued both psychologists and neuroscientists for many years. Recently, following many recent advances in the emerging field of cognitive neuroscience, there is the possibility that this fundamental process may soon be explained. In particular, there have been dramatic insights gained into the mechanisms of attention, cognition and perception in recent decades. Here, simple network models are proposed which are used to create a representation of consciousness. The models are inspired by the structure of the thalamus and all incorporate topographic layers in their structure. Operation of the models allows filtering of the information reaching the representation according to (1) modality and/or (2) sub-modality, in addition several of the models allowing filtering at the topographic level. The models presented have different structures and employ different integrative mechanisms to produce gating or amplification at different levels; the resultant representations of consciousness are discussed.
Tinsley
Chris J
CJ
Medical Research Council Centre for Synaptic Plasticity, Department of Anatomy, University Walk, Bristol University, BS8 1TD, United Kingdom. Chris.Tinsley@bristol.ac.uk
D003243:Consciousness; D006801:Humans; D008962:Models, Theoretical