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Understanding biphasic stimulus in bipolar configuration

Wed Jul 06, 2016 11:51 pm by salvira


I am using stg4002 for my stimulation experiments.  In a bipolar configuration that I will use (as in the fig),
I want to understand the direction of current in phase I , phase II and during the switch from phase the I to phase II.

Also what happens to the current in the situation when I am not connecting the ground electrode.

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Comments: 1

Can we set offset to sin wave in MC_stimulus

Tue Sep 15, 2015 6:00 pm by Hydrolab

We are trying to give voltage to a LED using stg4002, and we tend to give a sine wave with a offset. But we found that MC_stimulus can only give a sine wave with its mean zero. I wander if there is some way we can set an offset to a sine wave stimulus?

best regards

Comments: 1

Problems with STG4002 control by McsUsbNET.dll

Sun Jul 26, 2015 10:53 pm by Hydrolab320


We've recently been trying to control STG4002 by McsUsbNET.dll.
However, as a beginner, we encountered some troubles generating the stimuli we want.
Here are some questions about our code:

1. We could already detect the STG4002 connected to the computer, but we didn't receive the corresponding voltage in the output channel.
2. From the example package offered by MCS online, McsUsbNet.dll …

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Comments: 6

Bipolar stimulation

Fri Nov 05, 2010 5:24 am by np_cottaris


I have purchased a set of four STG4008 stimulators for driving a 32-electrode stimulating array (for use in retinal stimulation).
I am interested in bipolar stimulation, in which current is sourced from one electrode and sinked in another electrode. According to the manual I can drive a pair of electrodes (say A and B) in this push-pull configuration by connecting electrode A to the + …

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Comments: 5


Thu Jun 12, 2008 2:25 am by mcs

Dear MCS-Worker!
I want to use the Stimulus generator for synchronisation. So we want split the synch-signal: from generator to computer and to an other generator. But the signal is not stable. The direct way from stimulus generator to the second generator induce 1 signal per trigger signal. If the split the Trigger the second generate stimulised not stable, its like a hiccup. Only 75% of the …

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Comments: 3

Problem with the new STG2008: Sweep light is on

Wed Jun 11, 2008 8:30 pm by mcs

Dear MCS,

I have recently purchased a new STG2008 stimulator. In the past, I used exactly the same device loaned to me by Scientifica. When I got our own stim, I just thought I would plug it instead of the previous one and it would work. However, when I switch the power on, the Sweep light turnes yellow even if the stim is not connected to the PC. Moreover, the PC and MC Stim do not see …

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Comments: 3

Trigger an external stimulator using MC Rack

Mon May 26, 2014 3:02 am by AdamJackson


I am hoping to stimulate my slice using a bipolar wire instead of using the internal STG to stimulate one of the channels using the MC rack software. Is it possible to do this and simultaneously record from the MEA?

Any information would be appreciated


Comments: 6

Setup the memory layout of the STG 4008 using Matlab?

Mon Jan 06, 2014 9:39 am by Robcsy83

Finally, I could stream random sinusoid signals from Matlab r2011b to all 8 channels of an STG4008 by using the McsUsbNet.dll compiled in .Net.
It's working perfectly. However, I have been facing with an other open question and would like to ask for some help.

Problem description: Instead of a randomly generated sinusoid waveform (see my previous post) I would like to be able to stream the …

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Comments: 18

Problems with Matlab control of STG4008 based on the latest McsUsbNet.dll compiled in .Net

Tue Oct 15, 2013 7:40 am by Robcsy83

I'm trying to stream randomly generated sinusoid signals to all channels of an STG4008 from Matlab (r2011b 32 bit). The .Net assambly (McsUsbNet.dll) has been imported to Matlab. I'm able to query the serial number, the number of devices connected and also to establish the connection between the PC and the STG. The parameters (channelmap, syncoutmap, digoutmap etc.) necessary to start the …

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Comments: 15

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