Fig. 4

Saliency maps highlighted by the CNN model. A This key is a representation that maps the colored hatches to the neuropsychological tests. B Saliency map representing a recording (62 min in duration) of a participant with normal cognition (NC) that was classified as NC by the convolutional neural network (CNN) model. C Saliency map representing a recording (94 min in duration) of a participant with dementia (DE) who was classified with dementia by the CNN model. For both B and C, the colormap on the left half corresponds to a neuropsychological test. The color on the right half represents the DE[+] value, ranging from dark blue (low DE[+]) to dark red (high DE[+]). Each DE[+] rectangle represents roughly 2 min and 30 s