21 C.F.R. § 882.1835 Physiological signal amplifier.
Title 21 - Food and Drugs
(a) Identification. A physiological signal amplifier is a general purpose device used to electrically amplify signals derived from various physiological sources (e.g., the electroencephalogram). (b) Classification. Class II (performance standards).
Title 21: Food and Drugs
PART 882—NEUROLOGICAL DEVICES
Subpart B—Neurological Diagnostic Devices
§ 882.1835 Physiological signal amplifier.

