1 / 24

Seeing and Acting in a Virtual World PSY 341K

Seeing and Acting in a Virtual World PSY 341K. Class hours: Tues, Thurs 9.30-11 Room 4-242, SEAY Instructor: Professor Mary Hayhoe SEAY Room 5-238 X5-9338 mary@mailcps.utexas.edu Office hours: Anytime by appointment TA: David Lewis david.lewis @mail.utexas.edu

bikita
Download Presentation

Seeing and Acting in a Virtual World PSY 341K

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. Seeing and Acting in a Virtual World PSY 341K Class hours: Tues, Thurs 9.30-11 Room 4-242, SEAY Instructor: ProfessorMary Hayhoe SEAY Room 5-238 X5-9338 mary@mailcps.utexas.edu Office hours: Anytime by appointment TA: David Lewis david.lewis@mail.utexas.edu Co-instructor: Gabriel Diaz gdiaz@mail.cps.utexas.edu Web Site:http://homepage.psy.utexas.edu/homepage/class/psy341K/hayhoe/

  2. Organization • 1. Four experiments, approximately 3 weeks each. • 2. Background lectures, data collection, analysis, presentation; emphasis on class discussion. • 3. Groups of 4/5. • 4. Requirements: 4 papers, 2 exams (short answer), • attendance/participation/presentations. • 5. Readings/lectures etc on web site.

  3. The great unsolved problem: How does the brain control behavior? Phrenology Localization of function

  4. Even simple actions involve many parts of the brain. action plan Size, direction velocity motivation signals to muscles targeting Initiate sequence coordinate feedback memory respiration heart rate

  5. Classical Methods What are the physical limits of Vision?

  6. A Typical Experiment How accurate are eye movements? What is the peak velocity? What brain regions control eye movements?

  7. An Experiment on Searching for Objects Why do some objects “pop out”?

  8. And why are they sometimes hard to find?

  9. Questions we might like to ask: Where do we look in a scene in everyday life? What information do we need? How do we locate the information we need? How are the movements controlled?

  10. Why virtual reality? • Technological advances: • 1. measurement of complex eye, head, hand movements • 2. high speed image processing allows complex virtual • environments that can be controlled experimentally • 3. head mounted displays, tactile feedback • Natural behavior unexplored. • Need to validate (or not) results from simpler paradigms. • The CPS Virtual Reality Lab – a unique opportunity

  11. What you’ll learn • - Basic properties of perception, movements, and attention • - Understanding the research process: • the question, design of experiments, data analysis, making conclusions, communication. • - Original contributions/ discoveries. Thinking independently.

  12. Difficult things about this course • - no good text • - fragmentary • - lack of background • - data analysis • - presentations

  13. Date Topic • Jan 17 Overview of the course: understanding human actions • Introduction to Virtual Reality lab. • Jan 19 Using our Eyes in Everyday Tasks: • Lecture: The nervous system, vision, and motor control. • The eye and eye movements • Rosenbaum Ch 5, Land paper. • Jan 24 Lab: tracking the eyes while catching balls. • Jan 26 Lab: tracking the eyes. • Jan 31 Lecture: Interpreting the data • Feb 2 Discussion of Findings/ class presentations

  14. Feb 7 Interdependence of Vision and Action: Lecture Paper 1 due Feb 9 Vision and movement. (Rosenbaum Ch 2) Feb 14 Lab Intercepting virtual targets Feb 16 Lab: ctd Feb 21 Understanding the data Feb 23 Discussion of Findings / class presentations Feb 28 Review Paper 2 due Mar 1 Mid-term

  15. Gabe Diaz Virtual racquetball: Nvis helmet, Arrington eye-tracker, PhaseSpace head/hand/racquet tracking, ODE to control ball and racquet interactions

  16. Mar 06Learning Where to Look: lecture Mar 8Lecture Mar 13, 15 Spring Break Mar 20 Lab: Avoiding virtual pedestrians Mar 22 Lab: ctd Mar 27 Discussion of Outcome Mar 29 Class Presentations

  17. Gaze allocation when walking in a real environment Things to do: control direction, avoid obstacles, foot placement, characterize surroundings etc cf Walter: normal vision involves sets of sub-tasks or modules – need to allocate attention effectively between sub-tasks. Portable ASL eyetracker Oval path around large room pedestrians (Jovancevic & Hayhoe, 2009 J Neurosci)

  18. How are gaze targets chosen?

  19. Apr 3 Attention & Vision: Lecture Paper 3 due Apr 5 Lecture: attention and eye movements in natural environments Apr 10 Lab: Walking in a Virtual Apartment Apr 12 Lab: ctd Apr 17 Understanding the data Apr 19 Class presentations Apr 24 Lecture: Uses of virtual environments Apr 26 Review May 1 Review May 3 Final Exam Paper 4 due

  20. Grading: Papers 1-4: 15% each. Midterm and Final: 15% each; Attendance: 5%; Presentations and class discussion: 5%) Papers: 7-10 pages (typewritten, double spaced) reporting the results of the lab experiments. Can re-write papers. Exams - short answer questions. Midterm: first half of course. Final: second half of the course Exams cover : class material, labs, and readings.

More Related