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Summary of Part 1: Basic Mechanisms. Micro vs Macro scales Micro = basic mechanisms common across brain areas Macro = differentiation, organization, and.

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Presentation on theme: "Summary of Part 1: Basic Mechanisms. Micro vs Macro scales Micro = basic mechanisms common across brain areas Macro = differentiation, organization, and."— Presentation transcript:

1 Summary of Part 1: Basic Mechanisms

2 Micro vs Macro scales Micro = basic mechanisms common across brain areas Macro = differentiation, organization, and interaction of areas Overview of macro scale before discussing cognitive abilities

3 In Transition From Part I: Basic Mechanisms To Part II: Cognition  http://www.youtube.com/watch?v=VaQ66lDZ- 08&feature=related http://www.youtube.com/watch?v=VaQ66lDZ- 08&feature=related Spontaneous brain activity  http://www.youtube.com/watch?v=FZ3401XVYww&featur e=related http://www.youtube.com/watch?v=FZ3401XVYww&featur e=related miracle

4 General Functions of Cortical Lobes (how is this determined?)‏

5 Other (subcortical) Areas Hippocampus: rapid learning Thalamus:sensory input, attention Amygdala:emotion, fear/desire Basal Ganglia:motor control, gating of PFC Cerebellum: Coordinating movements Reward prediction system: dopamine release

6 Hierarchical sequences of transformations lines+colors Shapes Objects Object Meaning Plan Motor Plan Motor Movements Visual input V1/V2 Occipital V4 Occipital Inferior Temporal Ant. Pole Temporal PFC Frontal Supp. Motor Frontal Motor 1 Frontal Retina

7 Physical Details Amount of processing Input More processing for motor output Meaning Cortical Hierarchy

8 Multiple Interacting Pathways Early Vision Visual Object Recognition Audition Abstract Semantics Maintaining Abstract Information (plans, sensory info, etc) Movement Spatial Processing Touch

9 Interacting cortical pathways http://www.youtube.com/watch?v=aFPtc8BVdJk http://api.ning.com/files/b1W7u0PTXrlLrzqzehO cSPfWxpw7op*hJYqBcQG*NLA_/WheresWald o.jpg http://api.ning.com/files/b1W7u0PTXrlLrzqzehO cSPfWxpw7op*hJYqBcQG*NLA_/WheresWald o.jpg http://www.scholarpedia.org/article/Visual_searc h http://www.scholarpedia.org/article/Visual_searc h

10 Things on retina (lower visual system)‏ gun (higher visual system)‏ Gun

11 Things on retina (lower visual system)‏ Gun (Wallet) (higher visual system)‏ Gun

12 Tripartite Cognitive Architecture


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