I don't know if this is relevant to your question, but Rudolfo LLinas
(i.e., two Ls beginning his name) has described modulation of latencies
and/or conduction times so that neurons of varying distances from some
point of origin are active in synchrony; an important mechanism in the
context of a model in which "coherence" of cognitive events involving
widespread cortical sites is based on their sharing a 40Hz rhythm.
(I hope I'm stating his point correctly)
Try using his name as a starting pooint in literature search, and/or
contacting him at New York Univerity Medical Center (NY City); he
should also be in the Society for Neuroscience directory.
F. Frank LeFever, Ph.D.
New York Neuropsychology Group
In <6sghqu$h7$1 at inf6serv.rug.ac.be> snasuto at allserv.rug.ac.be (Slawomir
Nasuto) writes:
>>Dear All,
>>I have read that neurons in the visual cortex exhibit
>wide range of latencies (from around 40 to over 100
>miliseconds). However there was no more information
>about spatial characteristics of these latencies.
>I would like to ask if big differences in latencies
>are observed for the neurons with approximately
>the same number of synaptic stages between LGN and them?
>What about neurons with overlapping receptive fields ?
>Is there any systematic relationship between latencies
>and distance between neurons. Of course one expects
>that the latencies in onset of firing will be longer
>for given neurons than for neurons 'relying' to them
>action potentials from LGN so I am mainly interested
>in latencies not arising from sequential transmission.
>I would appreciate any information and pointers to
>the literature.
>Thank you in advance.
>>regards,
>slawek