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tools:antisaccade:eeg [2026/08/06 15:12] – [Degree Visual Angle/Distance Measurements] willtools:antisaccade:eeg [2026/08/06 15:40] (current) – [Degree Visual Angle/Distance Measurements] will
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 For local SSR [[tools:eyetracking#Configurations|measurements]] to visual angle, see [[tools:antisaccade:anti#visual_angle|Anti's visual angle section]] and [[https://www.sr-research.com/visual-angle-calculator/|SRR's visual angle calculator]].  For local SSR [[tools:eyetracking#Configurations|measurements]] to visual angle, see [[tools:antisaccade:anti#visual_angle|Anti's visual angle section]] and [[https://www.sr-research.com/visual-angle-calculator/|SRR's visual angle calculator]]. 
 +
 +  * 2026-08-06 (FC,VD,WF): EEG DollarReward dots presented at <wrap tip> 8, 16, and 23 degrees from center</wrap>.
 +  * 2026-07-30 (WF, PV): EEG chin rest measurements
  
 ^ screen width            |''53'' cm / ''1920'' px| ^ screen width            |''53'' cm / ''1920'' px|
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 ^ chin rest eye to top    |''60'' cm| ^ chin rest eye to top    |''60'' cm|
  
-2026-07-30: EEG chin rest measurements WF, PV 
  
-<code> +<code=R> 
- atan( ((320-c(7,108,214))/12.07)/60 ) * 180/pi +rad2deg <- \(x) x * 180/pi           # 180deg is pi radians 
-[1] 23.374051 16.316696  8.327162+dot_pos <- c(7,108,214)              # relative to a 640px screen 
 +from_center_px <- 640/2 - dot_pos    # pixel position from center 
 +fc_cm <- from_center_px * 53/640     # pixel to screen distance on 53cm wide screen 
 +dotdegs <- atan(fc_cm/60)|>rad2deg() # angle from center to points w/ 60cm eye-to-screen 
 + 
 +#  23.374051 16.316696  8.327162
 </code> </code>
 +{{.:pasted:20260806-153510.png?300}}
 +
 ===== Saccade scoring ===== ===== Saccade scoring =====