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Deliver clicks at given rate Analog Output Module - Printable Version +- Forums (https://sanworks.io/forum) +-- Forum: Bpod (https://sanworks.io/forum/forumdisplay.php?fid=1) +--- Forum: Software (https://sanworks.io/forum/forumdisplay.php?fid=6) +--- Thread: Deliver clicks at given rate Analog Output Module (/showthread.php?tid=568) |
Deliver clicks at given rate Analog Output Module - veronica - 04-26-2019 Hi, I would like to deliver auditory clicks at a given rate using the Bpod Analog Output Module. Is this possible? Which firmware would I need to use for the module and is there any documentation on how to implement the delivery of the stimulus? Thanks a lot! Veronica RE: Deliver clicks at given rate Analog Output Module - Josh - 04-26-2019 Hi Veronica, With its default WavePlayer firmware, the analog output module can play waveforms you program into it in advance. To create a waveform of clicks in MATLAB, you'd do the following (assuming your sampling rate is 50kHz) MyWave = zeros(1,500000); This will play 0V at each of 50,000 samples per second, lasting for 10 seconds. Then, at each position where you want to play a click, change two samples from [0 0] to: [1 -1] So two clicks 100 microseconds apart would look like: ...0, 0, 0, 0, 0, 1, -1, 0, 0, 0, 0, 1, -1, 0, 0, 0... Once you have the waveform you want, you can load it to the WavePlayer with the loadWaveform() method. Assuming you initialized the WavePlayer as 'W', it would be: W.loadWaveform(3, MyWave); % Load the waveform as Wave# 3 Then, you can trigger it from the MATLAB command line with: W.Play(1:4, 3); % Play waveform 3 on channels 1-4 Please let us know if this works for you! Best, -Josh |