Update overview.md

Co-authored-by: Yaroslav Halchenko <[email protected]>

overview.md

@@ -17,6 +17,7 @@ and necessary cables and connectors including audio and video splitter cables.
 The server software runs continuously on a dedicated computer that is connected to audio/video capturing device interjected between the stimulus presentation system (SPS) at the fMRI scanner suite. 
 The software monitors the audio and video streams that are sent over the SPS so that whenever there is a video feed to the projector in the scanner, 
 all content is recorded and time-stamped. 
+Any change in the parameter of captured video (connect/disconnect, change of resolution) triggers creation of a new captured content file.
 These recordings are not yet considered “records” in that they are not matched to specific fMRI scans. 
 The server simply monitors the SPS for content and records everything. 
 These raw recordings will often contain long periods of screen capture that show the content of the display on experimenter’s stimulus presentation computer (often a lab laptop).