Multichannel Systems USB-MEA256-System Manual User Manual

Page 24

USB-MEA256-System Manual

Using 256-9wellMEA Electrodes for Stimulation

Each well of the nine wells of the 256-9wellMEA is equipped with 26 round recording electrodes
in a 6 x 5 grid, two square electrodes S1 and S2 for recording or stimulation and one big reference
electrode. For detailed information, please read chapter “256-9wellMEA” and the data sheet.

If stimulation electrodes S1 and S2 in all wells are to be stimulated simultaneously,
it is recommended to use the adapter 256MEA-9well-STIM-ADPT. See also the data sheet
”256MEA-9well-STIM-ADPT” in the Appendix.

Please fix the adapter 256MEA-9well-STIM-ADPT on the connector sockets on the lid of the
USB-MEA256 amplifier as shown on the picture above. The red connectors (2 mm) connect
to the stimulation electrodes S1 or S2 in each well, respectively. The black connectors connect
to the ground electrodes in each well.

Three modes of stimulation are possible:

 Monopolar S1 versus ground: Connect the stimulator output to the red connector S1,

and the stimulator ground to the black connector S1.

 Monopolar S2 versus ground: Connect the stimulator output to the red connector S2,

and the stimulator ground to the black connector S2.

 Bipolar S1 versus S2: Connect the positive stimulator output to the red connector S1,

the negative stimulator output to the red connector S2, and the stimulator ground
to the black connector S1 or S2.

Please see STG manual for details on stimulation modes.