title: High-density multielectrode array with independently maneuverable electrodes and silicone oil fluid isolation system for chronic recording from macaque monkey.
abstract: Chronic multielectrode recording has become a widely used technique in the past twenty years, and there are multiple standardized methods. As for recording with high-density array, the most common method in macaque monkeys is to use a subdural array with fixed electrodes. In this study, we utilized the electrode array with independently maneuverable electrodes arranged in high-density, which was originally designed for use on small animals, and redesigned it for use on macaque monkeys while maintaining the virtues of maneuverability and high-density. We successfully recorded single and multiunit activities from up to 49 channels in the V1 and inferior temporal (IT) cortex of macaque monkeys. The main change in the surgical procedure was to remove a 5 mm diameter area of dura mater. The main changes in the design were (1) to have a constricted layer of heavy silicone oil at the interface with the animal to isolate the electrical circuit from the cerebrospinal fluid, and (2) to have a fluid draining system that can shunt any potential postsurgical subcranial exudate to the extracranial space.
authors.affiliation: Lab for Integrative Neural Systems, Brain Science Institute, RIKEN, Wako, Japan.
authors.forename: Naohisa
authors.initials: N
authors.lastname: Miyakawa
authors.forename: Noriko
authors.initials: N
authors.lastname: Katsumata
authors.forename: David T
authors.initials: DT
authors.lastname: Blake
authors.forename: Michael M
authors.initials: MM
authors.lastname: Merzenich
authors.forename: Manabu
authors.initials: M
authors.lastname: Tanifuji
mesh_terms: D000758:Anesthesia; D000818:Animals; D001931:Brain Mapping; D003627:Data Interpretation, Statistical; D004388:Dura Mater / Q000502:physiology; D017097:Electric Impedance; D004567:Electrodes, Implanted; D004594:Electrophysiology / Q000295:instrumentation* / Q000379:methods*; D008253:Macaca mulatta; D008839:Microelectrodes; D059906:Neuroimaging / Q000379:methods; D010775:Photic Stimulation; D012827:Silicone Oils; D013702:Temporal Lobe / Q000033:anatomy & histology / Q000502:physiology
chemical_list: D012827:Silicone Oils