Attending to External Cues and Movement Strategies in Parkinson Disease

"external cueing are sensory stimuli such as auditory (e.g. rhythmic metronome beats) or or visual (e.g. spaced lines on the floor). Cognitive movement strategies refer to focusing attention on a specific parameter of gait (e.g. step length, arm swing).~In the study participants walk under four walking conditions:1)usuall (baseline) walking 2)walking while attending to external cues wich will be applied via metronome beats. The number of beats per minute is adjusted to each participant's steps number per minute. 3)walking with movement cognitive strategy: participants are requested to focus on their step length- and focus on increasing their step length while walking 4) Dual tasking-walking while performing a cognitive task.~During the four walking conditions Brain engegament will be measured, using the single-channel EEG system (Brain-MARC LTD) described in the follwing outcomes measures section."