Information contained in sensory nerve recordings made with intrafascicular electrodes

Multiunit recordings were made in anesthetized cats with chronically implanted intrafascicular electrodes over a period of six months. Neural signals recorded with these electrodes consisted of activity in sensory fibers innervating a variety of cutaneous mechanoreceptors. Mechanical stimuli were us...

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Bibliographic Details
Published inIEEE transactions on biomedical engineering Vol. 38; no. 9; pp. 846 - 850
Main Authors Goodall, E.V., Lefurge, T.M., Horch, K.W.
Format Journal Article
LanguageEnglish
Published New York, NY IEEE 01.09.1991
Institute of Electrical and Electronics Engineers
Subjects
Animals
Biological and medical sciences
Cable insulation
Cats
Control systems
Electric Stimulation
Electrical stimulation
Electrodes
Electrodes, Implanted
Hemopathies
Medical sciences
Nerve fibers
Optical fiber sensors
Peripheral Nerves - physiology
Radial Nerve - physiology
Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects)
Sensory Receptor Cells - physiology
Spinal cord injury
Wires
Fissipedia
Carnivora
Electrophysiology
Electric
Nervous system
Stimulation
Experimental study
Long term
Electrodes
Instrumental stimulation
Vertebrata
Mammalia
Implanted
Animal
Cat
Sensory nerve
Recording
Biomedical engineering
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Summary:Multiunit recordings were made in anesthetized cats with chronically implanted intrafascicular electrodes over a period of six months. Neural signals recorded with these electrodes consisted of activity in sensory fibers innervating a variety of cutaneous mechanoreceptors. Mechanical stimuli were used to selectively activate individual nerve fibers, and the receptive field and receptor type were identified for each unit. Over a period of six months, there was a net shift in the recorded population, but the electrodes contained to provide a representative sample of the activity in the fascicle as a whole. The total number of units from which activity could be recorded remained roughly constant with time, and individual units persisted in the recordings for up to six months. These results indicate that intrafascicular electrodes could be used to sample information carried by individual somatosensory fibers on a long term basis.< >
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ISSN:0018-9294
1558-2531
DOI:10.1109/10.83604