ELECTROENCEPHALOGRAPHIC ELECTRODE DEVICE FOR SMALL LABORATORY ANIMAL AND ELECTROENCEPHALOGRAPHIC METHOD

摘要

The present invention provides an electroencephalographic electrode device whereby electroencephalographic electrodes can be easily attached to a small laboratory animal with no or little drop-off during a test and a weak electroencephalographic voltage can be stably measured at a high sensitivity.The electroencephalographic electrode device comprises a first electrode group (2) consisting of a plurality of needle electrodes and a second electrode group (3) consisting of a plurality of needle electrodes, said needle electrodes of the first electrode group (2) and the second electrode group (3) being fixed to a base (1). The needle electrodes of the first electrode group and the second electrode group are positioned so as to correspond respectively to the positions of the temporal muscles that are located in both sides of the skull of a small laboratory animal into which the needle electrodes are pierced and attached.