title: A 64(128)-channel multisite neuronal recording system.
abstract: We used a recently described all-dry silicon etch process for SOI wafers to fabricate 64-site electrode arrays in stereotrode arrangement for acute cortical recordings. The fork-like probes are connected to preamplification units by flexible, Y-shaped interconnects. This facilitates maximal experimental flexibility for simultaneously recording from all available channels from the cortex of anaesthetised rats. Preconditioned signals are amplified by a novel modular main amp, which may be software or dial controlled. Signals are 16bit digitized, recorded, analyzed, stored and processed on a DSP-based modular data acquisition system. Digital data is processed, filtered and denoised on all up to (4*32) 128 channels based on an extremely fast wavelet transformation framework.
authors.affiliation: Institute for Signal Processing, University of Lübeck, Germany.
authors.forename: U G
authors.initials: UG
authors.lastname: Hofmann
authors.forename: A
authors.initials: A
authors.lastname: Folkers
authors.forename: F
authors.initials: F
authors.lastname: Mösch
authors.forename: D
authors.initials: D
authors.lastname: Höhl
authors.forename: M
authors.initials: M
authors.lastname: Kindlundh
authors.forename: P
authors.initials: P
authors.lastname: Norlin
mesh_terms: D000669:Amplifiers, Electronic; D000818:Animals; D002540:Cerebral Cortex / Q000502:physiology*; D003626:Data Display; D004569:Electroencephalography / Q000295:instrumentation*; D004867:Equipment Design; D008838:Microcomputers; D008839:Microelectrodes; D009474:Neurons / Q000502:physiology; D051381:Rats; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D012825:Silicon
chemical_list: D012825:Silicon