Visual-somatosensory integration (VSI) as a novel marker of Alzheimer's disease: A comprehensive overview of the VSI study.

Identification of novel, non-invasive, non-cognitive based markers of Alzheimer's disease (AD) and related dementias are a global priority. Growing evidence suggests that Alzheimer's pathology manifests in sensory association areas well before appearing in neural regions involved in higher-order cognitive functions, such as memory. Previous investigations have not comprehensively examined the interplay of sensory, cognitive, and motor dysfunction with relation to AD progression. The ability to successfully integrate multisensory information across multiple sensory modalities is a vital aspect of everyday functioning and mobility. Our research suggests that multisensory integration, specifically visual-somatosensory integration (VSI), could be used as a novel marker for preclinical AD given previously reported associations with important motor (balance, gait, and falls) and cognitive (attention) outcomes in aging. While the adverse effect of dementia and cognitive impairment on the relationship between multisensory functioning and motor outcomes has been highlighted, the underlying functional and neuroanatomical networks are still unknown. In what follows we detail the protocol for our study, named The VSI Study, which is strategically designed to determine whether preclinical AD is associated with neural disruptions in subcortical and cortical areas that concurrently modulate multisensory, cognitive, and motor functions resulting in mobility decline. In this longitudinal observational study, a total of 208 community-dwelling older adults with and without preclinical AD will be recruited and monitored yearly. Our experimental design affords assessment of multisensory integration as a new behavioral marker for preclinical AD; identification of functional neural networks involved in the intersection of sensory, motor, and cognitive functioning; and determination of the impact of early AD on future mobility declines, including incident falls. Results of The VSI Study will guide future development of innovative multisensory-based interventions aimed at preventing disability and optimizing independence in pathological aging.

Home-based exercise program for older adults with Motoric Cognitive Risk syndrome: feasibility study.

Aim: We developed a home-based goal-directed exercise program with telephonic coaching to overcome barriers to exercise participation in cognitively impaired older adults. Methods: Six patients with Motoric Cognitive Risk syndrome at high risk for dementia were enrolled, three assigned to goal-directed exercises and three to stretching exercises. All participants underwent an in-person training session followed by a session at home with a telephonic coach. Sessions were supervised by a physiatrist, and exercise programs were personalized. Results: In-person training and remote telephonic coaching support promoted adherence. There were no adverse effects and interventions were rated highly. Participant and logistical barriers were identified that can inform design of home-based clinical trials. Conclusion: Home-based exercises are safe and feasible in older adults with Motoric Cognitive Risk.

Lay abstract Motoric Cognitive Risk syndrome is characterized by presence of cognitive complaints and slow gait. Patients who are diagnosed with this syndrome are at high risk for developing dementia. Hence, it is important to develop safe and effective exercise programs to prevent cognitive decline in these patients. Our study shows that home-based exercises with telephonic coaching are both safe as well as feasible in patients with Motoric Cognitive Risk syndrome. Participants reported high satisfaction with the exercise intervention, and strong interest in participating in future studies. They found the individualized exercise program to be appropriate to their own level of fitness, and this provided them confidence to continue exercising at home.

Muscle Overactivity in the Upper Motor Neuron Syndrome: Conceptualizing a Treatment Plan and Establishing Meaningful Goals.

Spasticity is a major physical complication of many neurologic and traumatic conditions of the brain and spine and can lead to muscle contracture, joint stiffness, reduced range of movement, skin breakdown, and pain. The management of spasticity includes a range of pharmacologic and nonpharmacologic interventions, often used in combination to optimize outcomes. However, it is important to identify and prioritize the patient's and clinician's goals, in order to create common attainable goals. These goals should be reviewed and revised at regular intervals.