Cortex consists of grey&white "matter".
The grey area contains mainly the cell bodies, and white the
myelinated axons, this all besides the non-neuronal cells, dendrites,
etc.
Myelination (by way of Scwann cells wrapping their membrane around
axons, but with unmyelinated areas intermittently called nodes of
Ranvier) increases transmission speed and reduces the energy needed
for spike transmission. Quite a bargain!
Justus
On Thu, 06 Sep 2001 12:04:30 GMT, remove_this!helbrecht at gmx.net
("Wolfram") wrote:
>Hello everybody,
>>someone told me, neurons in the white surface of the brain
>operates like bridges, transmitting signals from A to B about
>three times faster, than "normal" grey neurons. Is that true?
>>--
>>best regards,
>Wolfram
>>@Cologne, Germany
>
