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The effect of stimulation rate on the signal-to-noise ratio of evoked responses.
Ahlfors, S P; Ilmoniemi, R J; Portin, K.
Affiliation
  • Ahlfors SP; Low Temperature Laboratory, Helsinki University of Technology, Espoo, Finland.
Electroencephalogr Clin Neurophysiol ; 88(4): 339-42, 1993.
Article in En | MEDLINE | ID: mdl-7688289
The signal-to-noise ratio (SNR) in averaged evoked responses is proportional to the signal amplitude and to the square root of the stimulation frequency. If the SNR-stimulation-rate dependence is known for some specified component or feature of the response it is possible to select a rate that maximizes the SNR of that component within a given measurement time. The same stimulation rate also minimizes the acquisition time for a given SNR.
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Collection: 01-internacional Database: MEDLINE Main subject: Physical Stimulation / Evoked Potentials Limits: Humans Language: En Journal: Electroencephalogr Clin Neurophysiol Year: 1993 Document type: Article Affiliation country: Finland Country of publication: Ireland
Search on Google
Add to My VHL
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PubMed Links

Collection: 01-internacional Database: MEDLINE Main subject: Physical Stimulation / Evoked Potentials Limits: Humans Language: En Journal: Electroencephalogr Clin Neurophysiol Year: 1993 Document type: Article Affiliation country: Finland Country of publication: Ireland