Thanks for the awesome package! I'm using PsPM to measure SCR responses to 10s heat stimuli, so SF seems the best way to capture the multiple responses within each trial. One of my datasets has a marker channel, while the other does not. Without markers, I had no problem specifying time units as Seconds and specifying epochs manually. However, for the dataset with markers, I am selecting the time units as Markers and specifying the Marker Channel, but it's still asking me how I want to define Epochs (manually or via an Epoch File). My markers denote the start and finish times for each heat stimulation event, and are in the Marker Channel, so what should I be using for the Epochs?
Obviously a work around would be to read my marker file in myself and export those times and enter them manually, but I have a feeling this function is self contained. I couldn't find an explanation of the Epoch File anywhere in the manual or help pages, so I appreciate clarification.
Thanks!
Lauren
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Defining the timeunit as 'markers' only means that the timings given in the Epoch file or entered manually are marker numbers. Thus having timunit 'marker' does not mean that the timing is retrieved from the markerchannel. This functionality is not offered by PsPM.
Your work around was correct. This means you need to define a Epoch file with the timing of the epochs (ie. marker numbers) or enter them manually.
An Epoch file is a two-column text file with on/offsets or a .mat file with a variable 'epochs'. This variable is an e x 2 array of epoch on- and offsets (e.g. marker numbers), with e the number of epochs. For more informations about the timing you can have a look at the helptext of pspm_sf .
I am sorry for this inconvenience.
Best,
Laure
Last edit: Dominik Bach 2019-05-02
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Hello,
Thanks for the awesome package! I'm using PsPM to measure SCR responses to 10s heat stimuli, so SF seems the best way to capture the multiple responses within each trial. One of my datasets has a marker channel, while the other does not. Without markers, I had no problem specifying time units as Seconds and specifying epochs manually. However, for the dataset with markers, I am selecting the time units as Markers and specifying the Marker Channel, but it's still asking me how I want to define Epochs (manually or via an Epoch File). My markers denote the start and finish times for each heat stimulation event, and are in the Marker Channel, so what should I be using for the Epochs?
Obviously a work around would be to read my marker file in myself and export those times and enter them manually, but I have a feeling this function is self contained. I couldn't find an explanation of the Epoch File anywhere in the manual or help pages, so I appreciate clarification.
Thanks!
Lauren
Hello Lauren
Defining the timeunit as 'markers' only means that the timings given in the Epoch file or entered manually are marker numbers. Thus having timunit 'marker' does not mean that the timing is retrieved from the markerchannel. This functionality is not offered by PsPM.
Your work around was correct. This means you need to define a Epoch file with the timing of the epochs (ie. marker numbers) or enter them manually.
An Epoch file is a two-column text file with on/offsets or a .mat file with a variable 'epochs'. This variable is an e x 2 array of epoch on- and offsets (e.g. marker numbers), with e the number of epochs. For more informations about the timing you can have a look at the helptext of pspm_sf .
I am sorry for this inconvenience.
Best,
Laure
Last edit: Dominik Bach 2019-05-02