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Ch 3: Physiological Influences on Psychology

About This Chapter

Use the lessons in this chapter to explore how human physiology impacts psychological conditions. You can easily study for a test, prepare for an upcoming class or simply learn about these medical advances for the joy of knowledge.

Physiological Influences on Psychology - Chapter Summary

Human psychology has developed over hundreds of years, through many different theories. The lessons in this chapter help explore that development and the relationship between physiology and psychology. The lessons will take you from the earliest theories of human cognition to the current cutting edge of sensory research. Quickly review what you have learned with the included quizzes available after each lesson. These lessons are all standalone and can be taken whenever it's convenient for you. Each time you begin or complete a lesson, your place is saved in your Dashboard, making sure you never lose your place. Using these lessons, you'll be able to explain:

  • Who early Somatogenic theorists were and the advances they made
  • How phrenology was said to work and its fallacies
  • Why Phineas Gage's experiences profoundly impacted psychology
  • What extirpation states and how it led to the development of the clinical method
  • How Luigi Galvani demonstrated the relationship between electricity and thought
  • Why psychologists believe electrical stimulation worked as an effective treatment method
  • Who Johannes Muller was and how he contributed to the development of sensory theory
  • What combination of disciplines allowed Gustav Fechner to develop psychology into a quantifiable science
  • How human perception changes based on stimuli and the absolute threshold of sensation

12 Lessons in Chapter 3: Physiological Influences on Psychology
Biological and Medical History of Abnormality in Psychology

1. Biological and Medical History of Abnormality in Psychology

Somatogenic theory views mental illness as a medical condition and dates back to ancient Greece. In this lesson, we will look at the history of somatogenic theory, including key historical figures like Hippocrates, Franz Anton Mesmer, Benjamin Rush, and Emil Kraepelin.

Franz Joseph Gall & Phrenology Theory: Definition & Overview

2. Franz Joseph Gall & Phrenology Theory: Definition & Overview

Learn about phrenology. Understand the theory behind its practice and how it was used to help explain human personality and behavior. Learn about its important role in the development of neurology.

Phineas Gage's Story in Psychology: Brain Damage & Personality Changes

3. Phineas Gage's Story in Psychology: Brain Damage & Personality Changes

The story of Phineas Gage is one of the most famous in the history of psychology. Learn about Phineas Gage, the accident that caused him to have personality changes, and how he greatly influenced the field and practice of neuropsychology.

Luigi Galvani's Contributions to Psychology

4. Luigi Galvani's Contributions to Psychology

Luigi Galvani's experiment on frogs with electricity has had a long lasting effect on the medical field. This lesson discusses those contributions and their consequences.

The Electrical Stimulation Method: Theorists, Research & Applications

5. The Electrical Stimulation Method: Theorists, Research & Applications

Electrical stimulation procedures offer solutions in brain research and therapy. In this lesson, we'll discuss the work of Fritsch and Hitzig, who made significant discoveries in neuroscience through electrical brain stimulation.

Law of Specific Nerve Energies: Definition & Impact

6. Law of Specific Nerve Energies: Definition & Impact

This lesson looks at a theory for how an individual is able to react to their environment. The major theorist, Johannes Muller, is identified, the theory is defined, and the specific parts of the theory are defined and examined for impact.

Young-Helmholtz Theory of Color Perception

7. Young-Helmholtz Theory of Color Perception

In this lesson, we'll explore the Young-Helmholtz theory of color perception while examining components in the eye to see how it works. We'll also use this theory to explain color blindness.

Gustav Fechner: Psychology Theory & Explanation

8. Gustav Fechner: Psychology Theory & Explanation

In this lesson, you will learn about Gustav Fechner and the influence he had on the field of psychology. Specifically, you will learn how Fechner's background in religion and science helped him forge the way to making psychology a quantifiable science.

Psychophysics: Definition & Fundamentals

9. Psychophysics: Definition & Fundamentals

When you interact with the world around you, your brain is responding to different environmental stimuli. Psychologists who study these responses, like light, sound, or tastes, are part of the field of psychophysics. In this lesson, you will get a definition of psychophysics and learn about the fundamental methods that psychologists use to study psychophysics.

Absolute Threshold: Examples & Definition

10. Absolute Threshold: Examples & Definition

In this lesson, we'll talk about what absolute threshold is and explore some examples of absolute threshold for the human senses - specifically for vision and hearing. In the end, test your knowledge with a quiz.

Difference Threshold: Examples & Definition

11. Difference Threshold: Examples & Definition

Learn about the difference threshold phenomenon and some of its practical applications. Understand what affects your perception of change and why, sometimes, you do not notice differences that exist.

Two-Point Threshold: Example, Use & Definition

12. Two-Point Threshold: Example, Use & Definition

This lesson focuses on the idea of two-point threshold. This concept is described and defined and its uses are discussed. This lesson also looks at the value of the measure and whether there are other measures that are better.

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