1 / 24

Psychology 304: Brain and Behaviour Lecture 31

Psychology 304: Brain and Behaviour Lecture 31. Exam: December 7 th , 2011 3:30-6:00 PM, CIRS 1250. The exam is worth 25% of your final grade. The exam will be scored out of 60 points.

addison
Download Presentation

Psychology 304: Brain and Behaviour Lecture 31

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Psychology 304: Brain and BehaviourLecture 31

  2. Exam: December 7th, 20113:30-6:00 PM, CIRS 1250 • The exam is worth 25% of your final grade. • The exam will be scored out of 60 points. • The exam will include 30 multiple choice questions (1 point each), 4 definitions (2 points each), and 5-6 short answer questions (2-6 points each, totaling 22 points). • The exam is not cumulative. It will cover the contents of Chapters 7-10 and all accompanying lecture material.

  3. Please arrive on time to facilitate rapid distribution of the exams. • Bring a pencil, eraser, pen, and your student ID to the exam. • All electronic devices must be put away before the start of the exam. • Bags and backpacks should be left at the front of the room. Please do not bring valuables to the exam. • Hats (e.g., baseball caps) should not be worn during the exam.

  4. Reminder I will hold additional office hours in preparation for the December exam: Monday, December 5: 2:30 - 4:30 Tuesday, December 6: 1:30-3:30

  5. 3. I will hold additional office hours in preparation for the final exam: Tuesday, December 6: 10:30 - 12:30 Wednesday, December 7: 12:30-2:30

  6. The Visual System 1. What is the structure of the eye and where are the receptors for light? (continued) 2. How is information about light relayed to the brain? 3. What are the major areas of the brain that are associated with the perception oflight?

  7. By the end of today’s class, you should be able to: 1. explain how an action potential is generated in the retinal cells of the visual system. 2. review the pathway by which visual information is transmitted from receptors to the brain. 3. identify the locations and functions of the primary cortex, secondary cortex, and association areas for the visual system.

  8. What is the structure of the eye and where are the receptors for light? (continued)

  9. Generation of an Action Potential in the Retina

  10. How is information about light relayed to the brain? • Visual information is relayed to the brain via many pathways. The largest and most studied visual pathway is the retina-geniculate-striate pathway. • Within this pathway is the optic chiasm: at this point, axons from the nasal halves of the retinas “cross over” and ascend to the dorsal lateral geniculate nucleus (LGN) of the thalamus. Thus, each hemisphere receives information from the contralateral visual field.

  11. Retina-Geniculate-Striate Pathway

  12. Retina-Geniculate-Striate Pathway

  13. The LGN contains six layers of neurons. The inner two layers are called magnocellular layers, and the outer four layers are called parvocellular layers. • The magnocellular neurons are most responsive to movement and receive the bulk of their input from rods. • The parvocellular neurons are most responsive to color, fine pattern details, and stationary objects and receive the bulk of their input from cones.

  14. Magnocellular Layers of the LGN

  15. What are the major areas of the brain that are associated with the perception oflight? • The thalamic neurons that receive visual information subsequently project the information to the primary visual cortex (V1).

  16. Primary Visual Cortex

  17. Primary Visual Cortex

  18. The retina-geniculate-striate pathwayis characterized by retinotopic organization. • The primary visual cortex is organized into functional vertical columns (i.e., ocular dominance slabs, orientation columns).

  19. Ocular Dominance Slabs and Orientation Columns

  20. Information received by the primary visual cortex is segregated into distinct pathways that project to areas of the secondary visual cortex and, then, the association visual cortex. • Two main pathways from the primary visual cortex have been identified: The dorsal stream and the ventral stream. The dorsal stream is associated with location and movement; the ventral stream is associated with identification.

  21. The Dorsal and Ventral Streams

  22. VI: Location, orientation, colour V2: Form, relays information V3: Form V4: Colour, form, concentric, radial stimuli Inferior temporal area: Form, pattern recognition V5, Medial temporal area: Motion perception Prefrontal cortex: Facial recognition

  23. The Visual System 1. What is the structure of the eye and where are the receptors for light? (continued) 2. How is information about light relayed to the brain? 3. What are the major areas of the brain that are associated with the perception oflight?

  24. Psychology 304: Brain and Behaviour, Term 1 Research MethodsNeuroanatomyNeurophysiologyNeurotransmittersNeuropharmacologyHormones Nervous system development TouchHearingVestibular perception Taste Smell Vision

More Related