62), as well as larger pupil size during backward spans than during counting.

68), larger pupil size during forward spans than during counting ( M = 2.09, SD =. 49) than during forward spans ( M = 2.85, SD =. In control participants, analysis demonstrated larger pupil size during backward spans ( M = 3.36, SD =. 33), as well as larger pupil size during backward spans than during counting. 36), larger pupil size during forward spans than during counting ( M = 1.67, SD =. 39) than during forward spans ( M = 1.98, SD =. In patients with AD, analysis demonstrated larger pupil size during backward spans ( M = 2.12, SD =. We invited 24 patients with AD and 24 healthy older adults to perform backward and forward spans, as well as to count aloud in a control condition, while their pupil activity was recorded with eye tracking glasses. We thus investigated whether span tasks can modulate pupil size in patients with AD. However, little is known about pupil reaction to cognitive processing in Alzheimer's Disease (AD). For instance, research has consistently demonstrated that the pupil reacts to working memory span task performance. It is well established that pupil activity indexes cognitive processing.

Pinpoint pupil size