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The Biological Perspective

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Presentation on theme: "The Biological Perspective"— Presentation transcript:

1 The Biological Perspective
Chapter 2 Ciccarelli and Meyer

2 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

3 Three Functions of the Nervous System
Return

4 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)

5 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

6 Image of a Neuron Return

7 Central Nervous System: The Reflex Arc
Return

8 Basic Structure of a Cell
RETURN

9 Generating the Message Within the Neuron
Ionic Solution Resting Potential Action Potential All or none Video

10 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

11 Neurotransmitters, Messengers of the Network
Agonists/ Antagonists Acetylcholine Glutamate GABA Serotonin Dopamine Neural regulators/ Neural Peptides/ Endorphins

12 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

13 Answer The person becomes calm and the anxiety is reduced.

14 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?

15 Answer They are able to sleep return

16 Cleaning up the Synapse: Reuptake and Enzymes
Acetylcholine Enzymatic Degradation SSRI

17 The Central Nervous System: The Central Processing Unit
The Brain The Spinal Cord Neuroplasticity Stem Cells

18 Figure 2.6- The Spinal Cord Reflex
Reflex Arc RETURN

19 Superman Return

20 Looking Inside the Living Brain
Lesioning Studies Brain Stimulation Invasive techniques Noninvasive techniques Mapping Structure Mapping Function

21 From the Bottom Up: Structures of the Brain
The Hindbrain The Brain Stem Medulla Pons The Reticular Formation Raphe Nuceli Cerebellum Alcohol Alcohol 2

22 Structures under the cortex: Limbic System
Thalamus Hypothalamus Hippocampus Amygdala Cingulate Cortex

23 Cortex Lobes Association Areas Cerebral Hemispheres

24 4 Lobes of the Cortex Occipital Lobes Parietal Lobes Temporal Lobes
Frontal Lobes Mirror Neurons

25 Association Areas of the Cortex
Broca’s Area Wernicke’s Area Spatial Neglect

26 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

27 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

28 The Peripheral Nervous System
Somatic Nervous System Autonomic Nervous System

29 Somatic Nervous System
Sensory Pathway Motor Pathway

30 Autonomic Nervous System
Sympathetic Division Parasympathetic Division

31 Distant Connections: The Endocrine Glands
Pituitary Pineal Thyroid Pancreas Gonads Adrenal

32 Psychology in the News Myths Sources

33 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

34 Neuronal Transmission


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