Abstract:
:Intra-cranial electroencephalographic recordings are increasingly employed in mice because of the availability of genetically manipulated mouse models. Currently, dental acrylic and anchoring screws are used to cement implanted electrodes. This technique works well for adult animals but often encounters difficulty when employed in young mice because their skulls are not strong enough to bear the anchoring screws. Here we describe a novel method favorable for implantation of intra-cranial electrodes in mice as young as postnatal 18 days and suitable for long-term intra-cranial electroencephalographic recordings. Our approach is to construct a multi-electrode assembly according to the desired stereotaxic coordinates of intra-cranial recordings and to secure the implanted electrode assembly to the skull via glue rather than dental acrylic/anchoring screws. The surgical operation for such electrode implantation is relatively quick and rarely associated with complications such as infection, bleeding, neurological deficits, spontaneous seizures or behavioral disturbances. The implanted electrodes are stable, allowing repeated monitoring for several months. Data obtained by simultaneous intra-hippocampal and intra-cortical recordings indicate that our method is suitable for the examination of behaviorally related electroencephalographic activities and experimentally induced seizures. Technical aspects of our methods are discussed, and the procedures for constructing the electrode assembly are presented in detail.
journal_name
J Neurosci Methodsjournal_title
Journal of neuroscience methodsauthors
Wu C,Wais M,Sheppy E,del Campo M,Zhang Ldoi
10.1016/j.jneumeth.2008.03.001subject
Has Abstractpub_date
2008-06-15 00:00:00pages
126-31issue
1eissn
0165-0270issn
1872-678Xpii
S0165-0270(08)00164-7journal_volume
171pub_type
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