Reviewing 30sec epochs of streaming data in ActiView

Post Reply
jhulbert
Posts: 2
Joined: Sun Jun 09, 2019 5:00 pm

Reviewing 30sec epochs of streaming data in ActiView

Post by jhulbert » Sun Jun 09, 2019 5:09 pm

Hi everyone,

My students are attempting to roughly score sleep online in order to trigger sound stimulations when participants reach a particular stage of sleep. A couple of questions:

1) Is it possible to change the x-axis range/duration of a sweep in ActiView so that each screen spans 30 seconds?
2) Is it possible to review the data from previous (30 second) sweeps in ActiView as they are still streaming in live? Or would we need to set up TCP/IP and view the live data in another application. If so, does the user community have any recommendations for implementing this easily (e.g., which application would be best)?

Thanks in advance,

Justin

Coen
Site Admin
Posts: 961
Joined: Fri Mar 26, 2004 7:00 pm
Location: Amsterdam, Netherlands
Contact:

Re: Reviewing 30sec epochs of streaming data in ActiView

Post by Coen » Tue Jun 11, 2019 12:40 pm

1) Use the "Screen Lenght" selector in the lower left corner of ActiView (stop acquisition to change x-axis).

2) Use a BDF file reader (e.g. https://www.biosemi.com/download/ToolsF ... er-808.zip or http://www.teuniz.net/edfbrowser/) to view the history while the file is written by ActiView. The header still contains a "-1" value for the file length as long as the file is not closed by ActiView. The file reader should ignore this.

Best regards, Coen (BioSemi)

jhulbert
Posts: 2
Joined: Sun Jun 09, 2019 5:00 pm

Re: Reviewing 30sec epochs of streaming data in ActiView

Post by jhulbert » Tue Jun 11, 2019 2:12 pm

Super! Really appreciate your time and advice, as always.

Cheers,

Justin

Post Reply