The purpose of this study is to investigate whether markers of brain structure and function from MRI are associated with different levels of spatial orientation and gait parameters in people with mild cognitive impairment or dementia due to Alzheimer's disease when walking through a real world environment.
This is an experimental cross-sectional study which primarily aims at identifying characteristic features of spatial disorientation among people with mild cognitive impairment and dementia. The features of interest are motion and physiological related changes that occur during instances of spatial disorientation, which will be derived from wearable sensors. Additionally, brain structure and functional connectivity changes associated with different levels of spatial orientation and gait parameters will also be investigated through resting-state functional imaging.
Study Type
OBSERVATIONAL
Enrollment
50
Clinic and Polyclinic for Psychosomatics and Psychotherapeutic Medicine, University Medical Center Rostock
Rostock, Mecklenburg-Vorpommern, Germany
RECRUITINGSpatial disorientation
Incidences of disorientation will be annotated in real-time using a customized annotation scheme in the pocket observer software
Time frame: Up to 3 years from start of the study
Heart rate variability
Rate of change in heart rate will be measured using a wearable Photoplethysmography sensor
Time frame: Up to 3 years from start of the study
Skin conductance
Rate of change in electrodermal response will be measured using a wearable electrodermal activity sensor
Time frame: Up to 3 years from start of the study
Accelerometry
Incidences of change in movement behaviour and activity level will be measured using accelerometers
Time frame: Up to 3 years from start of the study
Grey matter volume
Rate of change in brain structural volume will be measured using a 3-Tesla scanner
Time frame: Up to 3 years from start of the study
White matter integrity
Rate of change in structural connectivity of brain white matter will be measured using a 3-Tesla scanner
Time frame: Up to 3 years from start of the study
Resting-state functional connectivity
Rate of change in functional connectivity of resting-state brain networks will be measured using a 3-Tesla scanner
Time frame: Up to 3 years from start of the study
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Interview responses
Participants assessments of their sense of orientation are obtained using a structured interview.
Time frame: Up to 3 years from start of the study