Movement Control 2 0.0 / 5 ? PsychologyBiological PsychologyUniversityAll boards Created by: Meg FraserCreated on: 22-12-17 14:59 What are the lateral descending pathways involved in? Initiation of voluntary movement 1 of 26 What are the ventromedial descending pathways involved in? Control and maintenance of posture and certain reflex movements 2 of 26 Where does information from the motor cortex areas travel to from the rubrospinal tract? Red nucleus to spinal cord 3 of 26 What does information from the motor cortex areas travel to from 2/3 of the corticospinal tract? Spinal cord 4 of 26 What does information from the motor cortex areas travel to from 1/3 of the corticospinal tract? Periphery to brain 5 of 26 What do lesions to the corticospinal tract result in? Paralysis and recovery 6 of 26 What do lesions to the rubrospinal and corticospinal tract result in? Paralysis without recovery 7 of 26 What are the vestibulospinal and tectospinal tracts not involved in? Coordinating and controlling sudden reflex responses 8 of 26 What are the pontine and medullary reticulospinal tracts involved in? Stabilises posture by resisting the effects of gravity 9 of 26 What are the basal ganglia involved in? Movement initiation and planning 10 of 26 What do the basal ganglia release? Automatic sequences of action 11 of 26 The basal ganglia is a complex... Heterogenous collection of interconnected nuclei 12 of 26 What does the motor cortico-basal ganglia loop not do? Cognitive control of actions 13 of 26 What is the prevalence of PD among the general population over the age of 65 years? 1-2% 14 of 26 What is Bradykinesia/Akinesia? Difficulties with daily activities e.g. writing 15 of 26 What is the most common first symptom of PD? Resting tremor 16 of 26 What does the basal ganglia have reduced input of? Dopamine 17 of 26 What is the cerebellum known as? Little brain 18 of 26 What is the cerebellum's percentage of the mass of the brain? 10% 19 of 26 What percentage of neurons in the brain are found in the cerebellum? 50% 20 of 26 What are the two hemispheres of the cerebellum connected by? Vermis 21 of 26 What does each hemisphere of the cerebellum control? Ipsilateral movements 22 of 26 What does damage to the cerebellum not cause? Inability to initiate and plan movements 23 of 26 What is dysynergia? Decomposition of synergistic multi joint movement 24 of 26 What is dysmetric? Miscalculation of movement distance 25 of 26 What is ataxia? Uncoordinated and inaccurate movement 26 of 26
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