A miniature electrode for surface electromyography during speech.
A miniature recessed (i.e., cup) surface EMG electrode intended for use in the perioral region during speech has been constructed and tested. In addition to its small size and low mass, a custom acrylic electrode housing features an extruded design to yield secure attachment to the skin with skin cement rather than with conventional double adhesive collars. A durable, commercially manufactured disk of homogeneous silver and silver chloride was utilized to optimize bioelectric characteristics and durability. In relation to the commonly used fine-wire intramuscular electrode composed of platinum-iridium, this surface electrode demonstrates comparable bioelectric performance in perioral applications including low, stable, and well-matched skin-electrode impedance, a low noise floor, a surprisingly wide bandwidth, and good signal-to-noise ratios.
D004576:Electromyography / Q000295:instrumentation*; D006801:Humans; D008046:Lip / Q000502:physiology; D008839:Microelectrodes / Q000592:standards*; D012867:Skin; D013018:Sound Spectrography; D013060:Speech / Q000502:physiology*