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The Biological Basis of Behavior

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The Biological Basis of Behavior Unit 2 Lesson 1- Techniques to Study the Brain Objectives: Students will describe techniques used to study the brain and neural function. – PowerPoint PPT presentation

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Date added: 22 August 2019
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Title: The Biological Basis of Behavior


1
The Biological Basis of Behavior
  • Unit 2
  • Lesson 1- Techniques to Study the Brain

2
Objectives
  • Students will describe techniques used to study
    the brain and neural function.

3
Warm Up
  • Why is it important for psychologists to study
    the brain and nervous system?

4
Greeks
  • Linked mind with brain
  • Hippocrates
  • Brain controls emotions, thought mental health
  • Galen
  • Brain fluids responsible for sensation,
    reasoning, memory movement

5
Phrenology
  • Bumps and depressions on skull personality
    character
  • Flawed!

Franz Gall
6
Galvanists
  • 1786 Luigi Galvani
  • Accidently demonstrated electrical basis of nerve
    impulses

7
Brain Damaged Patients
  • Linked loss of structure with loss of function
  • Phineas Gage emotional control
  • http//www.learner.org/resources/series142.html
  • Paul Broca Carl Wernicke language centers
  • Gunshot wounds, tumors, strokes, Alzheimers
  • enable further brain mapping.

8
Lesioning
  • Surgically destroy part of brain record
    behavior changes
  • Link structurefunction

9
Electrodes Direct Electrical Stimulation
  • Wilder Penfield
  • Origins of seizures
  • Mapped motor cortex
  • Walter Hess
  • Start/stop brain structures

10
Electrical Activity
  • Monitor and record nervous system (brain)
    activity
  • Electroencephalogram (EEG)
  • Electrodes glued to scalp
  • Measures brain waves
  • Regions

11
Imaging Observe function
  • Computerized Axial Tomography (CAT/CT) Scan
  • X-Ray Images of Brain Structures
  • Used to determine extent of injuries

12
Imaging
  • Magnetic Resonance Imaging (MRI)
  • Radio frequency detects tissue density (O2)
  • Detailed structure of brain
  • f MRIs now do function as well

13
Imaging
  • Positron Emission Tomography (PET) Scan
  • Inject solution into blood and chart the amount
    absorbed by brain cells.
  • Used to identify function/activity.

http//www.learner.org/resources/series142.html Pr
ogram 1 Organization and Evolution of Brain
Function
14
Closure
  • Identify three ways we learned about brain
    structure and function.
  • Brain damaged patients, lesioning, electrodes,
    electrical activity (EEG), imaging (CAT, PET,
    fMRI )

15
Brain Project
  • Due Oct 5th
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