US 11,666,258 B2
Eye-tracking system for detection of cognitive load
Mina Shojaeizadeh, Worcester, MA (US); Soussan Djamasbi, Natick, MA (US); Randy C. Paffenroth, Worcester, MA (US); and Andrew C. Trapp, Worcester, MA (US)
Assigned to Worcester Polytechnic Institute, Worcester, MA (US)
Filed by WORCESTER POLYTECHNIC INSTITUTE, Worcester, MA (US)
Filed on Jul. 26, 2019, as Appl. No. 16/523,147.
Claims priority of provisional application 62/711,057, filed on Jul. 27, 2018.
Prior Publication US 2020/0029806 A1, Jan. 30, 2020
Int. Cl. A61B 5/16 (2006.01); A61B 3/113 (2006.01); G06F 3/01 (2006.01); G06F 9/54 (2006.01); G06T 7/20 (2017.01); G06N 20/00 (2019.01); G06F 18/214 (2023.01); G06V 40/19 (2022.01)
CPC A61B 5/163 (2017.08) [A61B 3/113 (2013.01); G06F 3/013 (2013.01); G06F 3/017 (2013.01); G06F 9/542 (2013.01); G06F 18/214 (2023.01); G06N 20/00 (2019.01); G06T 7/20 (2013.01); G06V 40/19 (2022.01)] 16 Claims
OG exemplary drawing
 
1. A visual tracking system, comprising:
an eye-tracking device; and
a cognitive load detection device disposed in electrical communication with the eye-tracking device, the cognitive load detection device comprising a controller having a memory and a processor, the controller configured to:
receive eye-movement data from the eye-tracking device, the eye-movement data comprising pupil dilation event data taken during a saccade event and pupil dilation event data taken during a fixation event,
apply a processing function to the eye-movement data to generate processed eye-movement data as a ratio of the pupil dilation event data taken during the saccade event relative to the pupil dilation event data taken during the fixation event,
apply a classification function to the processed eye-movement data to detect a cognitive load associated with the processed eye-movement data and corresponding to a visual location of a field of view of the user, the cognitive load indicating an amount of cognitive resources used by a user when processing information, and
output a notification regarding the cognitive load associated with the processed eye-movement data.