Non-invasive Biosignal Analysis Oriented to Early Diagnosis and Monitoring of Cognitive Impairments

In this paper some of novel and low-cost methodologies are analysed for most common cognitive impairments: Alzheimer disease, Parkinson and Essential Tremor. These methodologies allow us to obtain information from the brain in an indirect form, without needing to do neither invasive nor expensive or long-time tests. We will present handwriting and speech as interesting biomarkers for the early detection and monitoring of cognitive impairments and detail possible fields of application, with real experiments carried-out at the Hospital Donostia (Spain) in several past and current projects.