Rabbit and monkey visual cortex:: more than a year of recording with up to 64 microelectrodes

被引:36
|
作者
Porada, I [1 ]
Bondar, I [1 ]
Spatz, WB [1 ]
Krüger, J [1 ]
机构
[1] Univ Freiburg, AG Hirnforsch, Inst Biophys, D-79104 Freiburg, Germany
关键词
monkey; rabbit; cortex; multielectrode; microelectrode; chronic implant;
D O I
10.1016/S0165-0270(99)00139-9
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
In the visual cortex of rabbits and a marmoset monkey, 32 and 64 microwires, respectively, were chronically implanted by an indirect insertion method so that the cortex was penetrated from the white matter. For more than 1 year recordings of action potentials of good quality were obtained at most electrodes. Recording stability was judged by spike shape, spike train autocorrelograms, and spike rates: within recording sessions, stability was essentially perfect. Periods in which the signals of several electrodes were stable could last for several days. A method of in vivo reconstruction of the electrode locations by micro-X-rays and subsequent stereophotogrammetry is presented. The aspect of animal welfare is considered. (C) 2000 Elsevier Science B.V. All rights reserved.
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页码:13 / 28
页数:16
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