Shining light on memory:
The effects of bright light exposure on
working memory performance
L. M. Huiberts , K. C. H. J. Smolders & Y. A. W. de Kort
We investigated whether task difficulty moderates the acute
effects of bright light on cognitive task performance. Using a
balanced cross-over design, 64 participants were exposed to
illuminance levels of 200 and 1000 lux. Digit-span task difficulty
was manipulated by using the forward and backward digit-span
task. N-back task difficulty was manipulated by using the
1-, 2-, and 3-back task.
---------- Results ---------2-back performance
3-back hit-rate percentage
2-back hit-rate percentage
3-back performance
Morning
Morning
Afternoon
Afternoon
Backward digit-span performance
FDST average number of correct trials
BDST average number of correct trials
Forward digit-span performance
Morning
Morning
Afternoon
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Afternoon