[Neuroscience] Frequencies of impulses in brain

[Marcin]

Hi,

I'm looking for informations about signals frequencies in brain
depending on area of it. For example range of frequencies for area
responsible for hearing or motor function. I need this information to
my master thesis about recordin extracellular signals from neuronal
cells.
Can someone help ?

Kind of animal dosen't matter ;)

Thanks,
Marcin