bci_sigcraft
bci_sigcraft
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Hi, Thank you @wjcroft and @mhrahmani! I will try with a battery and smaller input voltage!
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Hi, thank you for your response. I need to use the function generator for the research project, alpha test is not an option. I have attached an image of the wiring here: the jumper from SRB2 is connect the black lead of the function generator, and …
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And here are shots of the oscilloscope connected to the function generator. Channel 4 doesn't resemble for any
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Hi, I tried using the new configuration (channel 4 bottom pin, SRB2 bottom pin), but the plots didn't make any sense. I have attached below, please see, I would really appreciate insight. All waves 610mV and 10Hz. Sine Wave ramp wave square…
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Hi, I don't mean in the Bias_INV in the ADS, I mean in the Cyton Schematic I don't see it being connected to anything. Does the Cyton not use Bias_INV?
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In Bias_DRV there's a something called RS IM, what is RS IM? I see how Bias_DRV connects to the BIAS pins on the cyton, but I don't see Bias_Inv used anywhere, is it necessary?
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Or are none of those pins Ground individually, and is the Cyton Bias pin the Ground but the ADS1299 itself does not have a Ground equivalent?
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I see, that makes sense Which pin on the on the ADS1299 is Ground? BIASIN, BIAS REF, BIAS OUT or BIAS INV?
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What are the inputs labeled 4,5,6 referring to? Is the bias in the image the same as the Bias pin in the cyton? The ADS1299 does not have a single Bias pin, it has BIASIN, BIAS REF, BIAS OUT, BIAS INV which one is the Ground? Thank you!
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Thanks!
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Thank you!
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So there is no difference between the upper and lower Bias pins?
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Thank you! Is this Bias In or Bias Ref that acts as the ground?
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Hi! Thank you for explaining this, I have one more question. As you said there is no "reference" in EMG, it is actually ground. In the ADS1299 what is the ground input?
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So using the thinkpulse kit would be active, but using the 3m red dot would be passive?
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Thank you!
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Thank you! Are there any studies comparing these different systems? Which system -- a single common ground several differential pairs, a separate ground for each differential pair, and no specific electrode just for ground -- is best?
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Thank you! Just to clarify, while both EEG and EMG are differential systems, in EMG it is differential between a pair of electrodes, typically a common ground. In the example of Cometa above, the two electrodes form a differential pair, but there is…
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What about in EMG systems that only have two electrodes with no ground or common reference? Or is one of the electrodes the ground and the other the reference like in EEG system? Like https://www.cometasystems.com/products/picoemg
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Thanks! So in EEG when there is just one electrode from each channel, it's just the measure of that electrode? What is the ground used for in EEG ?
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How is the signal for the channel calculated relative to the differential electrodes and ground?
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Thanks!
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Can LSL also accept wireless inputs? Would I have to make any other other edits to the GUI?
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Thank you!
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I'm using the cyton with the wifi shield to collect EMG data with gold cup electrodes, will that make a difference?
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@wjcroft
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Thanks!