. Electronic apparatus for biological research. Electronic apparatus and appliances; Biology -- Research. Cement. Figure Fixation of electrodes in brain A simple technique for implanting electrodes in the brain of rabbits is described by Harris^ and in cats by Bradley and Elkes^. The electrode, either unipolar or bipolar, is made of suitable wire insulated with non- irritant resin or glass. It is held in a stereotaxic instrument and inserted into the brain through a hole drilled in the roof of the skull and an incision through the dura mater. By using known co-ordinates for the particular
. Electronic apparatus for biological research. Electronic apparatus and appliances; Biology -- Research. Cement. Figure Fixation of electrodes in brain A simple technique for implanting electrodes in the brain of rabbits is described by Harris^ and in cats by Bradley and Elkes^. The electrode, either unipolar or bipolar, is made of suitable wire insulated with non- irritant resin or glass. It is held in a stereotaxic instrument and inserted into the brain through a hole drilled in the roof of the skull and an incision through the dura mater. By using known co-ordinates for the particular brain the electrode tip can be placed with considerable accuracy in any desired position, which is then checked by radiograph before the electrode is finally fixed. The electrode and hole in the skull are packed with dental acrylic resin which hardens in a few minutes leaving the electrode firmly held in the skull. The wire is then released from the clamp, any excess is cut off and the top with its connecting lead is smoothed over with more resin. The skin can be sutured over the top of the electrode base and the leads taken subcutaneously to any desired point before they are brought 572. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Donaldson, Peter Eden Kirwan. New York, Academic Press
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