The Brain & the Nervous System

MeghanFraley 3,499 views 54 slides Sep 17, 2015
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About This Presentation

The Brain & the Nervous System


Slide Content

Biological Bases of Behavior Skyline 100 Meghan Fraley, PhD

Phineas Gage Digital Story https:// www.youtube.com / watch?v =MvpIRN9D4D4

BABY BORN WITHOUT A BRAIN https:// www.youtube.com / watch?v = tXZGFbxkuKs

Overview

PART ONE: BASIC NEUROSCIENCE

II. NEURONS AND NEUROTRANSMITTERS

Neurons or nerve cells - Structure function and types of neurons | https:// www.youtube.com / watch?v =cUGuWh2UeMk

Neurons release neurotransmitters to communicate Neurons

Neuron Types

Myelin Sheath: Glial Cells

Communication among Neurons

The Nervous System - CrashCourse Biology #26 https:// www.youtube.com / watch?v =x4PPZCLnVkA

Negative resting state Potassium and Sodium ions switch places which releases neurotransmitters at the synaptic cleft All or none principle: If sufficiently stimulated, will fire to its full extent The Axon: Action potential

The Science of Love https:// www.youtube.com / watch?v = eDMwpVUhxAo

Dived into two categories: Classical neurotransmitters Peptide neurotransmitters Substances that impact NT: Agonist: enhances effect of NT Antagonist: inhibits effect of NT Action Potential categories: Excitatory: Acetylcholine, norepinephrine increase likelihood of action potential Inhibitory: GABA, endorphin decrease likelihood of action potential Neurotransmitters

Fixation: Hyper-Sexual Apes https:// www.youtube.com / watch?v =gz5PvtSso6M

Basic Architecture of the Nervous System

All behavior results from activity in the cells of the nervous system Two divisions: Central nervous system Peripheral nervous system I. THE NERVOUS SYSTEM

Spinal cord and brain Sensory neurons carry info to CNS Motor neurons carry info away from CNS to muscles and glands The Central Nervous System

Nervous System Overview

The Somatic Nervous System Sends and receives sensory messages that control voluntary motor movement of the skeletal muscles Autonomic Nervous System Smooth muscles Digestion Heart rate Breathing The Peripheral Nervous System

Sympathetic Arousal and expenditure of energy External threat Fight or flight Parasympathetic Conservation of energy Rest/relaxation Meditation, hypnosis, biofeedback Can work together, not just in opposition! Sympathetic and Parasympathetic

Control center for most voluntary and involuntary behavior CNS: Brain

Control center for all voluntary and most involuntary behavior Brain Areas: Cerebrum Cerebellum Brain Stem Brain Divisions: Forebrain Midbrain Hindbrain Brain Overview

Hindbrain

Second largest structure Coordinates habitual muscle movements Tracking target with eyes Playing saxophone Excitatory inputs for maintaining smooth movement and coordinating motor activity Ataxia: lack of coordination Hindbrain: Cerebellum

Hindbrain: Brain Stem- Pons and Medulla

Midbrain

Awareness , attention and sleep Damage : disrupt sleep, permanentn coma-like sleep Midbrain: Reticular Formation

Tucked into the center of the brain Brain: Subcortical Brain Areas

Limbic System

Limbic System: Thalamus- Relay Station Thalamus Damage

Hypothalamus: Five Fs Hypothalamus regulates Homeostasis

Great Glands - Your Endocrine System: CrashCourse Biology #33 https:// www.youtube.com / watch?v =WVrlHH14q3o

The Basal Ganglia: On the Move

Gives emotional significance to sensory input Amygdala/Aggression Kluver-Bucy syndrome if destroyed Limbic System: Amygdala

Kluver Bucy Syndrome (Video) https:// www.youtube.com / watch?v =FSFjGk8RBPw

Limbic System: Hippocampus

What happens when you remove the hippocampus? https:// www.youtube.com / watch?v =KkaXNvzE4pk

Complex thought, perception and action Brain: Cerebrum

Cerebral Cortex

Left controls right, right controls left side of body Important distinctions of respective functions The Hemispheres

Corpus Callosum

Split brain behavioral experiments https:// www.youtube.com / watch?v =ZMLzP1VCANo

Girl Living With Half Her Brain https:// www.youtube.com / watch?v =2MKNsI5CWoU

Frontal, Parietal, Temporal, Occipital The Lobes

Frontal Lobes & Executive Functioning

Parietal Lobes: Body in Space

Temporal Lobes: Hearing & Understanding

Occipital Lobes: Vision Center

Tests of Brain Function and Structure

Computer records animal vision in Laboratory - UC Berkeley https:// www.youtube.com / watch?v = piyY-UtyDZw

The Teenage Brain Explained https:// www.youtube.com / watch?v =hiduiTq1ei8
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