What brain signals control writing a word?

[gamb1ttt]

how many types of brain signals are there? or
if a person thinks of writing a word
the signals that perform this action what are those called..?
(brain signals is not my subject but i want this knowledge
to further use it in a signals and systems project relating to human brain)
thnx

 

[berkeman]

how many types of brain signals are there? or
if a person thinks of writing a word
the signals that perform this action what are those called..?
(brain signals is not my subject but i want this knowledge
to further use it in a signals and systems project relating to human brain)
thnx

Welcome to the PF.

See if this article on EEG measurements helps you out:

http://en.wikipedia.org/wiki/Eeg

.