Lecture � Rolls, computational neuroscience, model of the visual system

Greg Detre

@11 on 7/02/02

Rolls, Weiskrantz Room

 

neurons carry roughly independent information

1 neuron usually carries c. 0.4 bits

so that encoding power goes up exponentially

 

how much information does temporal synchronisation add?

he thinks not very much (quantified with cross-correlation)

 

receptive fields of IT neurons when there are other objects in the scene

 

first spike after a stimulus � but the brain doesn't know which the first is

 

Koch potential affecting nearby neurons

10 micron electrode doesn't see correlations

would be insignificant in computational contribution anyway

 

change blindness � visuospatial scratchhpad, held while fixating elsewhere

 

perhaps there are separate object and subject grammatical databases, explicitly representing syntax

 

Questions

gap junction

John Taylor � ed of NNs, King�s, Maths Prof. (Rolls - consciousness in NNs?)

thinking about own syntactic/linguistic states, long-term planning if monkeys can do syntactic manipulaiton on symbols

why isn't synaptic organisation a type of syntax???