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Multichannel Recording Supplies and Equipment
Available from the CNNS

January 1, 1998

 

Item Cost Description
MMEP-3 $80 5cm x 5cm x 1.2mm photoetched multielectrode plate with 64 indium-tin oxide microelectrodes terminating in a 1mm2 recording area (32 contacts per edge). Insulated with polysiloxane resin, laser deinsulated at electrode tips, impedances adjusted to 1-3 megaohms (1 kHz)   with colloidal gold. Recording site area: 60-100 µm2
NOTE: reduced prices with bulk orders
1-10: $80; 11-29: $70; 30-50: $60;  >50: $55
MMEP-4 $100 Same as MMEP 3 but with equidistant electrode spacings.
Array: 8 x 8 with 125 µm spacing between all recording craters. Recording site area: 350-450 µm2; impedance: 0.6 to 1.2 megaohms.
NOTE: reduced prices with bulk orders
1-10: $100; 11-29: $90; 30-50: $80;  >50: $70
ORC-1 $500

Open recording chamber including: (a) anodized aluminum base plate;
(b) two silicone rubber pressure mats; (c) stainless steel chamber plate with attachment screws; (d) three silicone "O" rings; (e) four chamber covers;
(f) two Zebra strips for contact with amplifier circuit board; (g) power resistors (4) attached to base plate and connectors (for use with any DC power supply generating 1 amp at 15-20 V).

HCC $50 Heated chamber cover with transparent indium tin-oxide heating plate (to prevent condensation during microscope observations)
CRC-1  $750  Closed recording flow chamber including accessories listed with ORC-1 plus (a) microscope port cover glass (170µm; optically flat; one attached and 10 spare cover glasses); (b) nylon elbow medium flow connectors; (c) assembled tubing for peristaltic pump* with priming port, medium reservoir, medium circulation needle assembly, and tubing connectors. 
(*for Watson Marlow Model 101U low speed peristaltic pump)

 
 
 


Other Equipment

Miniaturized VLSI Preamplifier Systems

The Department of Electrical Engineering of the Southern Methodist University, Dallas, with assistance from the CNNS has developed a compact, stable, 64 channel preamplifier system using VLSI technology. The circuits have an amplification factor of x50, achieve very low noise, and have remarkably short input saturation after a large stimulation pulse. A laptop computer allows the selection of any combination of channels for stimulation with as many as 4 separate inputs patterns This equipment can be obtained from SMU. (Dr. Lorn Howard: (214) 768-3022 or Dr. Milton Gosney (214) 768-3115; FAX: (214) 768-3085.

 
SMU $2,000  VLSI Preamplifier (2 x 32 channels)
SMU $2,500 Laptop computer control for preamplifiers with docking station and signal card
SMU $250 Splitter board with voltage regulator and cables
SMU $750 Software

 

Computerized Multichannel Real-time Data Acquisition
and Processing System

A multichannel second stage amplifier system with computer control of channel selection and assignment, data acquisition modes, and data processing software can be obtained from Plexon Inc., Dallas (formerly Spectrum Scientific).  This powerful system has 4 input channels assigned to one digital signal processor and allows parallel 64 (or more) channel processing in real time. Compatible with conventional or the SMU-VLSI preamplifiers and usable for both cell culture and animal multichannel extracellular recording. Please contact Harvey Wiggins at Plexon for further information.

Plexon Tel. (214) 369-4957;  FAX (214) 369-1775.

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  Last updated: August 30, 1999

email gross@nervous.cnns.unt.edu