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BIOLOGY 305 LAB COMPARATIVE ANIMAL PHYSIOLOGY

BIOLOGY 305 LAB COMPARATIVE ANIMAL PHYSIOLOGY

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BIOLOGY 305 LAB COMPARATIVE ANIMAL PHYSIOLOGY

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  1. BIOLOGY 305 LABCOMPARATIVE ANIMAL PHYSIOLOGY Lab 2: Stimulus Response Pathways Reaction Times & Reflexes

  2. ANNOUNCEMENTS Carbon Copy Notebooks: • Required for lab NEXT week: • Buy at UMBC bookstore or ONLINE • Bring to lab EVERY week!

  3. ANNOUNCEMENTS Lab Exercises: • Usually available Friday afternoon online • Print out and bring to lab with you!

  4. ANNOUNCEMENTS Lab Quizzes: • First quiz in lab NEXT week! • ½ material from previous lab, ½ from future lab • Based on lab exercises and lab leadoff

  5. ANNOUNCEMENTS Lab Practical EXAM: • Week after NEXT! • Open lab hours begin NEXT week and schedule will be posted on course web page • Based on Exercise #1: Tutorial

  6. ANNOUNCEMENTS CLICKERS: • Bring Pads to EVERY Leadoff • You may miss ONE without penalty • In class, press any button to turn clicker ON • Set Channel to 41 • Press “Ch” button, enter 41 and then “Ch” button again

  7. ANNOUNCEMENTS Assignment #1:Animal Care & Use Report: • Justify use of animals in TEACHING laboratories • Focus on use of animals in education & teaching • NOT research! • Due AS YOU WALK IN THE DOOR to lab • Submit ELECTRONICALLY before lab • Submit through Blackboard (Safe Assign) • Instructions for electronic submission on course web site • Bring a printed (hard copy) of paper to lab • NO late submissions (hard copy or electronic) accepted

  8. ANNOUNCEMENTS Assignment #1: Animal Care & Use Report: • Minimum of 2 DIFFERENT scientific references • Citations: • In TEXT and full bibliography at end of paper • In text citations after every SENTENCE!!! • Proper citation FORMAT (link) on course web page • Follow link on course web page to avoid plagiarism • Spelling, grammar & organization COUNT!

  9. THIS WEEK IN LAB:INSTRUMENTATION Exercise 1: • Use of the pulsetransducer to indirectly measureheart rate (HR)

  10. THIS WEEK IN LAB: INSTRUMENTATION Exercise 1: The Pulse Transducer • What is a Pulse Transducer? • Important Concepts: • Flow of Information • Analog vs. Digital signals • Sampling Frequency • Aliasing

  11. THIS WEEK IN LAB: INSTRUMENTATION Exercise 1: The Pulse Transducer • The Output: TRACE • Amplitude • Frequency • Period

  12. Integrators (CNS) Stimulus Response Pathways Often Include: A. P. E.P. Receptor Effectors INPUT/stimulus OUTPUT/Response

  13. THIS WEEK: REACTION TIMES Stimulus Response Pathways: • Begin with a Stimulus: • End with a Response:

  14. THISWEEK:STIMULUS RESPONSE PATHWAYS Stimulus Response Pathways: • Neurons:

  15. REACTION TIMES • Instruments: • iWorx Unit • Pulse Transducer • Event Marker

  16. REACTION TIMES Audio Stimuli: 1. Stimulus Applied 2. Subject Hears Stimulus 3. Subject Responds To Stimulus

  17. REACTION TIMES Visual Stimuli: 1.Stimulus Applied 2. Stimulus Appears On The Computer 3.Subject SeesStimulus On Computer 4. Subject Responds

  18. REACTION TIMES Some Factors That May Contribute To Response Times:

  19. THIS WEEK: REFLEXES Stimulus–Response Pathways: • Reflexes are the most simple “ In its simplest form, a reflex produces a stereotypical response to a particular sensory stimulus” (Randal et. al 2002)

  20. REFLEXES Reflexes:

  21. OTHER INFLUENCES Reflexes: