Functional near-infrared spectroscopy in elderly patients with four types of dementia

Figure 2 Comparison of functional near-infrared spectroscopy patterns and task performances during the verbal fluency task (left) and the working memory task (right) between four types of dementia patients. A: Frontotemporal lobe dementia; B: Lewy body dementia; C: Parkinson’s disease dementia; D; Alzheimer’s disease. Red indicates higher activation, while blue indicates lower activation.