Neurocognitive Aspects of Dementia

Dementia is a prevalent neurodegenerative disorder that affects individuals, families, and healthcare systems worldwide. It is characterized by molecular and cellular changes, including beta-amyloid plaques and tau tangles in Alzheimer’s disease and cerebrovascular changes in vascular dementia. Cognitive impairments across various domains, including memory, attention, language, and executive functions, are also examined. The spectrum of symptoms varies between different dementia subtypes and among individuals within the same diagnostic category. Advancements in neuroimaging techniques, such as structural and functional magnetic resonance imaging (MRI), positron emission tomography (PET), and cerebrospinal fluid biomarkers, have helped in early detection of pathological changes and timely interventions. Cognitive reserve, influenced by factors like education, occupational complexity, and leisure activities, is also explored, offering potential avenues for preventive strategies and personalized interventions. Lifestyle factors, such as physical activity, diet, social engagement, and cognitive stimulation, also play a crucial role in the neurocognitive trajectory of dementia. Recognizing these modifiable factors presents opportunities for holistic interventions beyond pharmacological approaches. This comprehensive exploration of dementia’s neurocognitive aspects will shed more light about the disorder, integrating knowledge of neuropathological changes, cognitive manifestations, neuroimaging insights, cognitive reserve, and lifestyle influences.