Fig. 3From: The TAS Test project: a prospective longitudinal validation of new online motor-cognitive tests to detect preclinical Alzheimer’s disease and estimate 5-year risks of cognitive decline and dementiaSpatial Span test; the participant is shown a sequence of yellow circles and then asked to repeat the sequence by clicking on the circles. The length of sequence increases each time a sequence is correctly recalled, up to a maximum of 9 circlesBack to article page