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
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