[MURG] Non-invasive 3-D Scanning

[Yan King Yin]

Joe wrote:

>However it appears so far that neuron "types" can mostly 
>be distinguished by position and morphology; when we have detailed 
>connectivity information, my guess is that that will resolve any 
>further difficulties in telling what type of neuron each one is (and 
>therefore, what neurotransmitters it produces etc.).  There is so far 
>no evidence, as far as I know, that gene activation is actually 
>important for memory beyond its obvious effects on cell type and 
>morphology.

What about gene regulation of expression of neuropeptides?
We know many neurons co-release peptides when subject to
strong stimulation. Neuropeptides are manufactured in the
cell body and transported to axons. This may constitute a
form of memory. Peptides are involved in emotions etc.

It's possible that a lot of memory could be encoded in
this way. Is there any evidence to preclude this possibility?

YKY


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