4 setting up the internal stimulus generator – Multichannel Systems MEA2100-System Manual User Manual

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Software

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3.4

Setting up the Internal Stimulus Generator

The headstage of the MEA2100-System is equipped with an integrated 3-channel stimulus
generator. The three stimulation channels operate independently.

Even when using multiple instances of MC_Rack, each instance is completely independent and
each instance has three stimulus channels available for the electrodes which are controlled by
that instance.

It is possible to choose between current or voltage controlled stimulation, and any electrode can
be selected for stimulation. The control functions for electrode selection and definition of the
stimulation parameters are integrated into MC_Rack you do not need any additional software.
However, it is possible to import stimulation patterns generated in MC_Stimulus II as ASCII data.

Important: In current stimulation mode, if you select two or more stimulation electrodes for
the same stimulation pulse, please be aware that in some configurations (when more than one
electrode is used within a block of 30 electrodes which are powered by the same current source)
the current level of the stimulation pulse will be divided among these electrodes. That means
the current level is lower than expected. Please read also chapter “Stimulation” in the Appendix.

Add the internal stimulus generator to your rack: Click menu “Edit” and choose "Add MEA2100
Stimulator".

The following dialog appears.

Select the tab of any of the three stimulation channels (Stimulus 1, 2 or 3). In the "Stimulus" tab
page, you can define the stimulation pulse and select how the stimulation is started and stopped.

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