Multichannel Systems LTP-Director Manual - Manual (Page 50)

LTP-Director Manual
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Click the "Detection" tab.
The "Detection" tab displays the channels of the four electrodes, selected in test mode for
online analysis. Each electrode is labeled as somatic or dendritic, as you defined it in the test
mode. In "Threshold" you set the detection level for local maxima or minima for each electrode
as a multiple of the noise level. Local maxima or minima will be shown as dots in the data trace.
So, if you have, for example, a bit of artefact left that gets detected as a local minimum or
maximum, increase the threshold level. If you do not detect a local maximum or minimum in a
small signal, decrease the threshold level. A threshold of 30 times the noise for EPSPs (dendritic)
and about 20 times the noise for population spikes (somatic) is a good value to start with.
Click the "IO curve" tab.
In the "IO curve" tab, there is the option to run an IO curve with stimuli of increasing strength
on either one or both pathways to determine the optimal stimulation strength individually for
either stimulation pathway.