Presented by-

Md. Bashir UddinRoll: 1215502Dept. of BME

KUET, Khulna-9203

Electrodes are first receiver of biomedical signal from the surface of the body/internal of the body.

Receiving signals are given into the input of preamplifier that converts ionic conduction of tissues into electronic conduction.

Body surface electrodes Internal electrodes

It is Placed on the surface of the body

Examples: Metal-plate electrodes Floating electrodes Flexible electrodes Dry electrodes

It is Inserted into the body (Needles) Wires Implanted electronic circuits

Example: Radio telemetry transmitter

Limb Electrodes Floating Electrodes Pregelled Disposable Electrodes Paste less Electrodes Air-Jet Electrodes

Pad Electrode Chloride silver wire Needle type Hypodermic needle type Metal type micro electrode Micropipet Electrode

Chloride Silver Discs Electrode used for general study

Needle Electrode used for special study