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The Biological Perspective
Chapter 2 Ciccarelli and Meyer
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Overview of the Nervous System
Neuroscience Nervous System (Figure 2.1) Central Nervous System Brain Spinal Cord Plasticity Peripheral Nervous System Autonomic Nervous System Parasympathetic Division Sympathetic Division Somatic Nervous System Three Functions of the Nervous System Next
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Three Functions of the Nervous System
Return
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Structure of the Neuron
Biological Psychology/Behavioral Neuroscience General Cell Structure Neurons are Specialized Cells -Definition of Neuron -Three Types of Neurons 1) Sensory Neurons (Afferent Neurons) 2) Interneurons 3) Motor Neurons (Efferent Neurons)
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Parts of a Neuron Parts of a Neuron Soma Dendrites Axon
Neurons in the Body Neurilemma Glial Cells Oligodendrocytes Schwann Cells (Nodes of Ranvier) Astrocytes Microglia Nerves
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Image of a Neuron Return
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Central Nervous System: The Reflex Arc
Return
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Basic Structure of a Cell
RETURN
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Generating the Message Within the Neuron
Ionic Solution Resting Potential Action Potential All or none Video
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Sending the message to other cells: The Synapse
Axon Terminals Synaptic Knob Synaptic Vesicles Neurotransmitters Synaptic Gap or Synapse Receptor Sites How do Neurotransmitters get across the synapse Video
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Neurotransmitters, Messengers of the Network
Agonists/ Antagonists Acetylcholine Glutamate GABA Serotonin Dopamine Neural regulators/ Neural Peptides/ Endorphins
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Agonist for GABA GABA is an inhibitory neurotransmitter that results in calming anxiety If a person has anxiety and they are given Diazepam, an agonist for GABA What happens to someone who takes diazepam
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Answer The person becomes calm and the anxiety is reduced.
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Antagonist for Norephinephrine
Norepinephrine is an excitatory neurotransmitter involved in arousal (wakefulness) If a patient has excessive arousal and presents with difficulty sleeping and they are given an antagonist for norepinephrine what happens?
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Answer They are able to sleep return
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Cleaning up the Synapse: Reuptake and Enzymes
Acetylcholine Enzymatic Degradation SSRI
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The Central Nervous System: The Central Processing Unit
The Brain The Spinal Cord Neuroplasticity Stem Cells
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Figure 2.6- The Spinal Cord Reflex
Reflex Arc RETURN
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Superman Return
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Looking Inside the Living Brain
Lesioning Studies Brain Stimulation Invasive techniques Noninvasive techniques Mapping Structure Mapping Function
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From the Bottom Up: Structures of the Brain
The Hindbrain The Brain Stem Medulla Pons The Reticular Formation Raphe Nuceli Cerebellum Alcohol Alcohol 2
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Structures under the cortex: Limbic System
Thalamus Hypothalamus Hippocampus Amygdala Cingulate Cortex
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Cortex Lobes Association Areas Cerebral Hemispheres
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4 Lobes of the Cortex Occipital Lobes Parietal Lobes Temporal Lobes
Frontal Lobes Mirror Neurons
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Association Areas of the Cortex
Broca’s Area Wernicke’s Area Spatial Neglect
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Cerebral Hemispheres Split Brain Research Sex Differences
Left Hemispheres Right Hemispheres Controls the right hand Controls the left hand Spoken language Nonverbal Written language Visual-spatial perception Mathematical calculations Music and artistic processing Logical thought processes Emotional thought and recognition Analysis of detail Processes the whole Reading Pattern recognition/facial recogniiton
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Applying Psychology to Everyday Life
ADHD 3 Diagnostic Specifications 1) ADHD, predominantly hyperactive 2) ADHD, predominantly inattentive 3) ADHD, combined type Brain Areas involved Prefrontal cortex, basal ganglia, cortical structures, cerebellum, corpus callosum Causes
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The Peripheral Nervous System
Somatic Nervous System Autonomic Nervous System
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Somatic Nervous System
Sensory Pathway Motor Pathway
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Autonomic Nervous System
Sympathetic Division Parasympathetic Division
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Distant Connections: The Endocrine Glands
Pituitary Pineal Thyroid Pancreas Gonads Adrenal
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Psychology in the News Myths Sources
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Sex Differences Mental Process Male Female
Emotional Expression Right Both Sides Visual/Spatial Perception Left Both Sides Vocabulary/Definitions Left Both Sides Grammar/Language Mechanics Left Left Front Hand Movements Left Left Front Return
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Neuronal Transmission
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