Multichannel Systems MEA2100-System Manual User Manual

Page 21

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Software

17

List Mode

Clicking the button List Mode opens an additional window: List of Stimulation Patterns.
In List Mode it is possible to generate and download a list of up to 256 user defined stimulation
patterns, which will then be applied automatically one after the other.

When the List Mode is activated, the three stimulator units are coupled to a single starting
trigger
. The starting trigger is set in the tab of the first stimulator unit, Stimulus 1. In Stimulus 2
and 3, the respective functions are disabled. To uncouple the stimulator units again, close the List
Mode dialog. The step from one stimulation pattern to the next in the list happens when the start
condition defined for Stimulus 1 occurs (for example, manual start, incoming trigger, real-time
feedback trigger) and all three stimulator units are idle. Please see the red bars on the picture.
However, the next pattern can only be started by the respective starting condition when the
previous stimulation paradigm, including all breaks, is completely finished.

That means, if one stimulation pattern of any of the three stimulator units is still running
when the condition occurs, nothing will happen. This also holds true when a stimulator unit
is not actually used in the currently active stimulation pattern. Hence, the longest programmed
stimulation pattern determines the minimum possible time between two starting triggers,
even if the respective stimulator unit is not actually used. It is therefore advisable to set
a stimulation pattern with a length of 0 on all unused stimulator units, and keep all patterns
as short as possible.

A stimulation pattern can contain single or multiple stimulation electrodes and may get an
user defined name. To create a list of different stimulation patterns, please do the following.

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