Multiple implants do not aggravate the tissue reaction in rat brain.
Author
Summary, in English
Chronically implanted microelectrodes are an invaluable tool for neuroscientific research, allowing long term recordings in awake and behaving animals. It is known that all such electrodes will evoke a tissue reaction affected by its' size, shape, surface structure, fixation mode and implantation method. However, the possible correlation between tissue reactions and the number of implanted electrodes is not clear. We implanted multiple wire bundles into the brain of rats and studied the correlation between the astrocytic and microglial reaction and the positioning of the electrode in relation to surrounding electrodes. We found that an electrode implanted in the middle of a row of implants is surrounded by a significantly smaller astrocytic scar than single ones. This possible interaction was only seen between implants within the same hemisphere, no interaction with the contralateral hemisphere was found. More importantly, we found no aggravation of tissue reactions as a result of a larger number of implants. These results highlight the possibility of implanting multiple electrodes without aggravating the glial scar surrounding each implant.
Department/s
Publishing year
2012
Language
English
Publication/Series
PLoS ONE
Volume
7
Issue
10
Full text
Links
Document type
Journal article
Publisher
Public Library of Science (PLoS)
Topic
- Neurosciences
- Medical and Health Sciences
Status
Published
Project
- Vävnadsreaktioner i nervsystemet efter elektrodimplantation
Research group
- Neuronano Research Center (NRC)
- Neurophysiology
ISBN/ISSN/Other
- ISSN: 1932-6203