English subtitles

← Closing points - Intro to Psychology

Get Embed Code
2 Languages

Showing Revision 3 created 05/25/2016 by Udacity Robot.

  1. Throughout evolution, humans brains have grown larger and more complex. And
  2. that allows us to do all the amazing things that we can do. Everything about
  3. who we are, what we like, how we think, what we dream. And even how we feel is
  4. a function of our brain and its electrical and chemical activities. The nervous
  5. system is divided into the central nervous system that is comprised of the
  6. brain and the spinal cord. And the peripheral nervous system that consists of
  7. the somatic nervous system, which controls voluntary behavior. And the
  8. autonomic nervous system that controls involuntary behavior. The autonomic
  9. nervous system is further broken down into the sympathetic nervous system,
  10. which is our fight or flight responses. And the parasympathetic nervous system,
  11. which produces the opposite effects and relaxes the sympathetic nervous system.
  12. Neurons are specialized cells that communicate with each other via electrical
  13. and chemical signals. Sensory neurons receives sensory information and send it
  14. to the brain for processing. The brain then sends information to our motor
  15. neurons that allow us respond appropriately, and the interneurons form
  16. connections between neurons. After an action potential has occurred, neurons
  17. can release neurotransmitters, which are naturally occurring chemicals that
  18. produce a cascade of effects. Some important neurotransmitters in the study of
  19. psychology are, Dopamine, Serotonin, Acetycholine, Gabba, and Glutamate. As
  20. well as our natural occurring Endorphins. The brain is divided into twp
  21. hemispheres, left and right. And those communicate via the corpus collosum. The
  22. upper-most portion of the brain is the cerebrum. And the frontal lobe is
  23. important for attention, working memory, impulse control, and abstract thinking
  24. and creativity. It is the youngest part of the brain and the part that makes us
  25. most human. We are better able to determine what the different parts of the
  26. brain are responsible for due to advances in brain imaging techniques such as
  27. EEG, fMRI, and PET scans. These allow for researchers to see what parts of the
  28. brain are activated when we engage in various activities, such as talking,
  29. reading or even dreaming.