2020-08-24 11:29:46

Prelude

PSYCH 260.004

Neurological Bases of Human Behavior

TA & Instructor

Shekoo Hedayati, M.S.

Graduate Student in Cognitive Psychology

Rick O. Gilmore, Ph.D.

Professor of Psychology


What is this course about?

  • What is behavior?
  • What distinguishes human behavior from other animals?
  • What are neurological bases (of human behavior)?
  • What other bases (of human behavior) are there?
  • How do the neurological bases of human behavior affect your life?

What is this course about?

  • What is behavior?
  • What distinguishes human behavior from other animals?
  • What are neurological bases (of human behavior)?
  • What other bases (of human behavior) are there?
  • How do the neurological bases of human behavior affect your life?

What is this course about?

  • What is behavior?
  • What distinguishes human behavior from other animals?
  • What are neurological bases (of human behavior)?
  • What other bases are there?
  • How do the neurological bases of human behavior affect your life?

  • Why does taking/drinking X make me feel Y?
  • My grandmother has Alzheimer’s disease. What’s happening to her brain?
  • Carrie Fisher had bipolar disorder. What’s that about?
  • Why is sleep so important for brain health?
  • My mom says my frontal cortex isn’t fully mature. Is she right?
  • Is it safe for high school athletes to play football (or soccer, hockey, etc.)?

This course is about…

Genes

Neurotransmitters

Neurons

Networks

Brains

Behavior

Today’s topics

  • Introduction to the course
  • A bit about systems

Course overview

Keys for success

  • Study the figures.
  • Study regularly – don’t cram.
  • Come to class (in-person or virtually).
  • Participate!

Why is biology essential for the science of behavior?

  • What is science?
    • What distinguishes sciences?
    • What is neuroscience?
  • Why is neuroscience harder than physics?

What is science?

What is science?

  • Body of facts or truths
  • Process of acquiring knowledge
    • Systematic study
    • Observation, experiment, description
    • Aims at reliable, reproducible, general, systematic, universal laws
    • Strives for objectivity

Gilmore on science vs. other ways of thinking

  • Science is a way of thinking and a set of behaviors
  • Science describes, tries to predict
  • Science alone not well-suited to prescribing (recommending) or proscribing (prohibiting)
    • little to say about what is good, just, right, moral, etc.
    • (Although systematic descriptions of phenomena can be used to make pre/proscriptive claims…)

  • Science rests on evidence and logic
    • NOT on authorities (e.g., people whose stature is largely or solely based on their position or economic status)
    • However, some scientific claims (and scientists) are more credible and authoritative than others.
  • Science respects tradition
    • but questions and tests it repeatedly…
  • Science should be reproducible
    • others can get the same answer

  • Science
    • has led to huge advances in human health and prosperity over the last several centuries
    • will be essential for maintaining and extending those advances in the future

Similarities between sciences

  • What are the different kinds of X?
    • Form, e.g., anatomy
  • How does X work?
    • Function, e.g., physiology
  • Where did X come from?
    • Origins, e.g., development/evolution

Examples

  • “Coronavirus gets its name because of its crown-like shape.”
  • “Coronavirus appears to have originated in non-human animals in China.”
  • “Viruses reproduce (and cause illness) by forcing host organisms to create massive quantities of the virus.”

Differences among sciences

  • Phenomena of interest (studying what)
  • Methods or tools (studying it how)
  • Levels of analysis
    • Spatial scale (nanometers to light-years)
    • Temporal scale (milliseconds to millenia)

What is neuroscience?

  • The study of the nervous system
    • And the behavior it makes possible
  • Questions neuroscience asks…
    • What are the parts of the nervous system?
    • How do the parts work? What do they do?
    • Where did they come from?

Why neuroscience is harder than physics

Why neuroscience is is harder than physics

A bit about systems

A bit about systems

  • Neuroscience studies the nervous system…
  • But what are systems?

Related ideas

Systems you know…

  • Think of a system you know something about
  • What makes it a system?

Non-biological examples

  • Solar system
  • Climate system
  • Economic system
  • Internet

Systems have

  • Boundaries
  • Components
  • Interactions
  • Forces/influences
  • Inputs, outputs, processes

Systems…

  • “Behave” or change state across time
  • May return to starting state
  • Appear to be regulated, controlled, influenced by feedback loops

May be thought of as networks

Why is studying systems so hard?

  • Single parts -> multiple functions
  • Single functions -> multiple parts
  • Change structure/function over time (learning, development)
  • Naturally occurring systems not “designed” like human-engineered ones
  • What information is being processed? What is being controlled?

Next time…

  • History of neuroscience
  • Methods of neuroscience