Wierd Sensation after induced hyperventilation for EEG

[mom2bellalia]

Today I had an EEG to diagnose TLE. During the test I was asked to breathe rapidly and deeply for three minutes. After 1 1/2 minutes I notice a strange almost audible sensation throughout the middle of my back. It felt and like I was lying on a running motor. The sensation gradually went away within five minutes. Any ideas? This was quite a wild feeling, have any of you heard about this? Thank you for your insights.

[MG (Admin)]

Thanks for your question,

Your symptoms fit-in with those caused by hyperventilation.

There was a very good thread detailing the reason why hyperventilation causes all these strange symptoms which I hope you find useful.

http://forum.asktheneurologist.com/some ... -t114.html

[mom2bellalia]

I understand that the purpose of my breathing heavy was to induce hypervenilation but I have yet to read anything that mentions the "audible motor in my back" can you give me any links that will descride this feeling as being hyperventilation. Thank you.

[clinicalguru3]

Has it ever happened when not hyperventilating?
Please describe exactly what you heard...in which ear?