Lecture 6. Biological Bases of Behaviour (III, wo genetics)

Lecture 6. Biological Bases of Behaviour (III, wo genetics)...

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Unformatted text preview: Introduction to Psychology PSYC 1001, Section E Wednesday, Oct. 8, 2008 The Biological Bases of Behaviour (Part III, Ch. 3) Todays class (Objectives) Brain and Behaviour Forebrain Cerebral Lateralization Research Methods EEG, Lesioning, ESB, Brain-Imaging Plasticity Synaptic Organizational/Brain The Endocrine System Heredity and Behaviour Evolutionary Theory Organization of the NS Forebrain Largest and most complex region of the brain Comprises: Thalamus Hypothalamus Limbic system Cerebrum Forebrain Largest and most complex region of the brain Thalamus: Relay & Integrative center Handles ALL incoming (except olfaction) and outgoing signals Hypothalamus: Regulation of basic biological needs Homeostasis (maintains status quo) Forebrain Limbic system: Loosely connected network of structures ( edge of cortex & subcortical regions) Regulates Emotions, Memory, and Motivation (e.g., Emotional and Sexual behaviors; Spatial navigation) Includes (broadly speaking): Thalamus Hypothalamus Hippocampus Amygdala Forebrain: Limbic System Hippocampus: Learning and Memory Consolidation of memories (Long-term memory) Itself part of a complex system (at least one!) Forebrain: Limbic System Amygdala: Involved in emotion and aggression Emotional memory (esp. learning of fear responses) Forebrain: Limbic System Reward circuit runs through limbic system Forebrain Cerebrum: The seat of complex thought Comprises brain regions responsible for the most complex mental activities Learning, memory, thinking, consciousness Most recently evolved brain structure in humans Forebrain: The Cerebrum Cerebral Cortex: Heavily folded (convoluted) outer layer of cerebrum ( cortex = bark ) Cerebral Hemispheres: Brain contains two almost symmetrical halves: Right and Left Separated by the longitudinal fissure Connected by the corpus callosum (collection of fibres) Corpus callosum Corpus Callosum: Only connection between the hemispheres that may readily be cut without damaging the gray matter itself Forebrain: Cortex Occipital lobe: Vision Parietal lobe: Tactile; Bodys position in space Temporal lobe: Auditory (also visual & gustatory) Frontal lobe: Motor cortex (Also integrates sensory and motor functions) Higher-order, executive functions (PFC) Planning, Organizing, Directing, Monitoring & Selective Attention Contralaterality: Crossed...
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This note was uploaded on 04/04/2010 for the course 32611 PSYC 1001 taught by Professor Darcylitteljohn during the Fall '08 term at Carleton CA.

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Lecture 6. Biological Bases of Behaviour (III, wo genetics)...

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