Basal Ganglia 0.0 / 5 ? PsychologyNeuroscienceUniversityNone Created by: JessToLetYouKnowCreated on: 01-06-16 21:09 What is the basal ganglia? A group of structures that work together 1 of 31 All ... have one? Vertebrates 2 of 31 What suggests that it is ancient? Evidence from fossils 3 of 31 What has not changed? Problem that BG evolved to solve 4 of 31 When did the BG start to grow? 60 million years ago 5 of 31 What is the same across all the BG? Local micro-architecture 6 of 31 What is part of the BG and limbic system? Amygdala 7 of 31 Some parts of the .... are considered to be part of the BG or limbic system Telencephalon 8 of 31 What are 3 external inputs? Cerebral cortex, limbic system and brain stem via thalamus 9 of 31 What does the BG control? Motivation and motor processing 10 of 31 What is involved in the motivational version of the selection problem? Competing functional (motivational) systems 11 of 31 What shares the motor system? Independent parralel processing 12 of 31 What problem does this cause? Which areas should be allowed to access motor output 13 of 31 What does the superior colliculus do, often referred to as "brain burglar alarm"? Looks everywhere but is changed by sudden movement 14 of 31 What is an ancient example of this problem? Wildebeest and crocodile - which animal should the crocodile eat? 15 of 31 What hasn't this done - Changed much - "if it's not broken, don't fix it" 16 of 31 What is this solved by? re-entrant loop architecture 17 of 31 What is the output of BG to hypothalamus? Inhibitory 18 of 31 What does BG focus on (it isn't smart)? Which loop is shouting loudest 19 of 31 The signals of the loop are strongest if need of loop is ... Highest 20 of 31 What can each level of the sensorimotor system do once activated? Operate without control of higher levels 21 of 31 What are the mechanisms in place to ensure they stay effective? BG and cerebellum 22 of 31 What was used to simulate behaviour of rat? Robot 23 of 31 What was used as food? Cans 24 of 31 How long were rats deprived of food for? 24 hours 25 of 31 After the fear of the open space dissipated, why did they run to the food? Because the need for food was stronger than the fear 26 of 31 What were the 5 steps of the study in robots? 1) wall seek 2) wall follow 3) can seek 4) can follow 5) can deposit 27 of 31 What is the new brain driven by? Selected goal 28 of 31 What is the old brain driven by? Selected stimulus 29 of 31 What is one example of basic systems winning out over rational thought? Same amount of spider phobias in UK where spiders are not poisonous as in Australia where they are 30 of 31 What disorder can the breakdown of the pathway that projects to the striatum from the substantia nigra in the BG cause? Parkinson's disease 31 of 31
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