Lec 8 - Intro to Movement

Lec 8 - Intro to Movement - Introduction to Movement...

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Unformatted text preview: Introduction to Movement Introduction to Movement and and Motor Units Motor Units This pdf file is enabled for commenting in dobe Reader and the urls are active BIO 334 - 2012 Craig Evinger Adobe Reader and the urls are active. Why Have A Nervous System? http://www.youtube.com/watch?v=SAz1L8DlvBM C 6 H 12 O 6 (aq) + 6 O 2 (g) → 6 CO 2 (g) + 6 H 2 O (l) ∆ G = -2880 kJ per mole of C 6 H 12 O 6 2n CO2 + 4n H2O + photons → 2(CH2O) n + 2n O2 + 2n H2O You Need A Nervous System If You’re Going To Collect Food ou Don’t Need A Nervous System If Food Comes To You You Don’t Need A Nervous System If Food Comes To You A Nervous System Is For Movement A Nervous System Is For Movement – Sea Squirts Sea Squirts arval tunicates are free Larval tunicates are free swimming animals with a full nervous system and sensory systems. Larval tunicates attach to rocks and mature into adults. As sessile creatures, they digest almost their entire nervous and sensory systems and spend their time extracting organisms that they pump through their gut. http://people.biology.ufl.edu/sahilber/VertZooLab2007/Lab1.htm Voluntary Movement Involves The Entire Brain Voluntary Movement Involves The Entire Brain What’s Involved In Catching A Ball 1. See the ball and follow it with your eyes. – Sensory & Motor Focus your attention on the ball and ignore other objects in the visual environment; move your eyes to stay with the target Visual System Visual System Parietal And Frontal Parietal And Frontal Cortex Are Important In Attention Cortex Are Important In Attention Voluntary Movement Voluntary Movement Steps In Catching A Ball 1. See the ball and follow it with your eyes. – Sensory & Motor Focus your attention on the ball and ignore other objects in the visual environment; move your eyes to stay with the target 2. Prepare to make the movement. What is your objective in making the movement? Voluntary Movement Involves The Entire Brain Voluntary Movement Involves The Entire Brain What’s Involved In Catching A Ball 2. Prepare to make the movement. What is the objective of your movement program? ominant Hand The nervous system plans a movement in Dominant Hand Dominant Hand Wrist Immobilized terms of its goal rather than the effector used accomplish the task Non Dominant Hand to accomplish the task. This process requires a oordinate system Pen Held With Teeth coordinate system transformation . Pen Attached To Foot Coordinate Transformations Coordinate Transformations Converting a Globe to a Map http://www.sci.uidaho.edu/scripter/geog100/lect/01-foundations-of-geography/cartog-remsens-gis.htm The Problem of Coordinate System Transformation The Problem of Coordinate System Transformation The Real World has X,Y, and Z Axes, but Movement is Around Joints 3 axes, X, Y, & Z are necessary to pecify where your hand should go in specify where your hand should go in the real world....
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Lec 8 - Intro to Movement - Introduction to Movement...

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