Biology 305 lab comparative animal physiology
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BIOLOGY 305 LAB COMPARATIVE ANIMAL PHYSIOLOGY. Lab 2: Stimulus Response Pathways Reaction Times & Reflexes. ANNOUNCEMENTS. Carbon Copy Notebooks: Required for lab NEXT week: Buy at UMBC bookstore or ONLINE Bring to lab EVERY week!. ANNOUNCEMENTS. Lab Exercises:

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Biology 305 lab comparative animal physiology l.jpg

BIOLOGY 305 LABCOMPARATIVE ANIMAL PHYSIOLOGY

Lab 2: Stimulus Response Pathways

Reaction Times & Reflexes


Announcements l.jpg
ANNOUNCEMENTS

Carbon Copy Notebooks:

  • Required for lab NEXT week:

    • Buy at UMBC bookstore or ONLINE

    • Bring to lab EVERY week!


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ANNOUNCEMENTS

Lab Exercises:

  • Usually available Friday afternoon online

  • Print out and bring to lab with you!


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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


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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


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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


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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


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    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!


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    THIS WEEK IN LAB:INSTRUMENTATION

    Exercise 1:

    • Use of the pulsetransducer to indirectly measureheart rate (HR)


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    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


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    THIS WEEK IN LAB: INSTRUMENTATION

    Exercise 1: The Pulse Transducer

    • The Output: TRACE

      • Amplitude

      • Frequency

      • Period


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    Integrators

    (CNS)

    Stimulus Response Pathways Often Include:

    A. P.

    E.P.

    Receptor

    Effectors

    INPUT/stimulus

    OUTPUT/Response


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    THIS WEEK: REACTION TIMES

    Stimulus Response Pathways:

    • Begin with a Stimulus:

    • End with a Response:


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    THISWEEK:STIMULUS RESPONSE PATHWAYS

    Stimulus Response Pathways:

    • Neurons:


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    REACTION TIMES

    • Instruments:

      • iWorx Unit

      • Pulse Transducer

      • Event Marker


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    REACTION TIMES

    Audio Stimuli:

    1. Stimulus Applied

    2. Subject Hears Stimulus

    3. Subject

    Responds

    To Stimulus


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    REACTION TIMES

    Visual Stimuli:

    1.Stimulus Applied

    2. Stimulus Appears

    On The Computer

    3.Subject

    SeesStimulus On Computer

    4. Subject Responds


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    REACTION TIMES

    Some Factors That May Contribute To

    Response Times:


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    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)


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    REFLEXES

    Reflexes:


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    OTHER INFLUENCES

    Reflexes: