> To continue. Did they find the receptive field for a
> cell and the check to see how that field effected neighboring
> cells.
>> The reason why I'm asking is that I have developed a
> connectionist model of some aspects of vision (based on
> empirical studies). The model works very well, but the
> final set of connection weights ended up looking like the
> center-surround cells that Hubel and Wiesel discribe. But,
> theres one exception. The fields in my model overlap. I'm
> looking for physiological evidence that this might have
> happened in the cells the H and W examined.
>
Two thoughts:
1) As one goes further into the visual system (e.g., ventral
processing stream) the receptive fields enlarge and necessarily
overlap.
2) Also I believe that even in striate cortex or immediately
extrastriate (e.g., V2) cortical areas, there exists cells whose
receptive fields overlap. I recommend consulting a recent vision
text. A decent one is the Semir Zeki book "A Vision of the Brain".
You could also try perception texts.
