find peak

[lihanyan1990]

Hi,

So far we already have the fluorescent trace of one cell over time as an array.
What I was trying to do is to detect peaks with event timestamp as an output.
Like your figure 2.
Which function should I use for that.
My apologies I couldnt find in any documents.

Thank you so much
Hanyan

[sebromano]

Hi Hanyan,
the variable raster that is obtained after completing steps 20-30 of the protocol is a matrix of size T x N, where T is the total number of imaging frames and N the total number of ROIs. This matrix has 1s at the time samples points on which there was a significant fluorescence transient for each corresponding ROI, and 0s for non-significant fluoresce. So, for example for ROI 5, you need to check the time samples at which there are 1s in raster(:,5).
Sebastian.