Cognitive decline, the gradual deterioration of cognitive abilities and functioning, progresses in parallel with age and becomes more pronounced in populations at risk of neurodegenerative diseases (Figure 1A).
The deterioration of cognitive abilities has a direct influence on the execution of activities of daily living (ADLs) and negatively affects autonomy and wellbeing. As life expectancy continues to increase, the number of the senior population and, consequently, the prevalence of cognitive impairment is expected to increase (WHO Europe, n.d.).
A combination of healthy diet, moderate exercise, and cognitive stimulation have been proposed as strategies to attempt to slow down the progression of cognitive decline. Among these, cognitive training systems aim to maintain an effective cognitive function through the structured practice of specific cognitive domains.
Furthermore, when presented in a computerized form, the exercise difficulty can be adapted to the performance of the individual, which presents an advantage over pen-and-paper formats.