Essays about: "Basal Ganglia"

Showing result 11 - 15 of 17 essays containing the words Basal Ganglia.

  1. 11. MAIA: The role of innate behaviors when picking flowers in Minecraft with Q-learning

    University essay from Lunds universitet/Kognitionsvetenskap

    Author : Henrik Siljebråt; [2015]
    Keywords : reinforcement learning; q-learning; minecraft; innate behavior; artificial intelligence; conditioning; neuroscience; dopamine; prediction error; cognition; learning; neural networks; cognitive science; Science General;

    Abstract : Recent advances in reinforcement learning research has achieved human level performance in playing video games (Mnih et al., 2015). This inspired me to understand the methods of reinforcement learning (RL) and investigate whether there is any basis for those methods in neurobiology and animal learning theories. READ MORE

  3. 12. Characterization of the synaptic connectivity patterns of genetically defined neuron types in circuits that regulate dopamine and serotonin

    University essay from KTH/Skolan för teknik och hälsa (STH)

    Author : Alexandros Ikaros Pavlopoulos; [2014]
    Keywords : neuroscience; lateral habenula; optogenetics; neuronal populations; neurons; brain; dopamine; serotonin; dual viral system; retrograde viral tracing; globus pallidus; rabies virus; reward; basal ganglia;

    Abstract : The Lateral Habenula (LHb) have been implicated in both reward-seeking behavior and in depressive disorders due to its modulatory effects on dopamine rich areas. Excitatory projections from LHb target GABAergic interneurons of both ventral tegmental area (VTA) and rostromedial tegmental nucleus (RMTg) and consequently provide strong inhibition on VTA‟s dopaminergic neurons. READ MORE

  4. 13. Finite Element Method Modelling and Simulations for Comparisonbetween Deep Brain Stimulation Electrodes

    University essay from Institutionen för medicinsk teknik; Tekniska högskolan

    Author : Fabiola Alonso Orozco; [2012]
    Keywords : Deep Brain Stimulation; Finite Element Methode modelling and simulation; current and voltage controlled stimulation electrodes.;

    Abstract : The Deep Brain Stimulation (DBS) is an invasive therapy that alleviates the symptoms of several neurological disorders by electrically stimulating specific regions of the brain, generally within the basal ganglia. Until now Medtronic DBS system is the only approved by the Food and Drug Administration, nevertheless European and Australian countries  have recently approved St. READ MORE

  5. 14. Signal Transduction: Dopamine D1 receptor-induced signaling cascades in the striatum in Parkinson's disease

    University essay from Malmö högskola/Fakulteten för hälsa och samhälle (HS)

    Author : Natallia Maslava; [2012]
    Keywords : basal ganglia; calcium pathway; D1 receptor pathway; dyskinesia; extracellular signal regulated kinases 1 and 2; metabotropic glutamate receptors; Parkinson’s disease; synaptic plasticity; Western blot.; dopamine; basala ganglier; kalcium signalväg; D1 receptor signalväg; dyskinesi; extracellulär signal-reglerade kinaser 1 och 2; metabotropa glutamatreceptorer; Parkinsons sjukdom; synaptisk plasticitet; dopamin;

    Abstract : Parkinsons sjukdom är en av de vanligaste progressiva neurodegenerativa sjukdomer som drabbar upp till tio miljoner människor i världen. Sjukdomen orsakas av död av de nervceller som producerar signalämnet dopamin. För att kompensera bristen på dopamin, får patienter läkemedlet levodopa som är en precursor för dopamin. READ MORE

  6. 15. A neurocomputational account for differences in real and hypothetical financial decision making : Or, why can´t we mimic our own decisions?

    University essay from KTH/Transport- och lokaliseringsanalys

    Author : Joakim Forsman; [2011]
    Keywords : ;

    Abstract : This thesis gives a neurocomputational account to the observation that humans have difficulties mimicking the financial decisions they make in real situations when asked under hypothetical circumstances. The analysis falls under the category of neuroeconomics and is carried out using a computational model of the brain, composed of relevant brain regions for financial decision making such as the action-selecting basal ganglia, the value-encoding orbitofrontal cortex, and the emotional headquarters of the amygdalae. READ MORE