ACTIVITY MONITOR - Vanderbilt Kennedy Center

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MED ASSOCIATES INC. ACTIVITY MONITOR Rotational Behavior Calculations With the MED Rotational Analysis Setup, the user can select from three pre-defined settings to analyze for large, medium, and small clockwise and counterclockwise rotations. We have also provided user-definable quadrant, radius and onset/backtrack tolerance settings to provide flexibility for subject/treatment specific analyses. The preset values analyze for small (Figure 4-10), medium (Figure 4-9), and large rotations, up to the entire diameter of the chamber (Figure 4-8). This ability to classify rotations based upon their size (actually maximum radius) was initiated in light of current research examining rotations as wide or pivotal. Remember, the OFA system tracks the center of the animal, therefore the rotations considered are ambulatory circles, the path of which is defined by the radius, number of segments, and segment limits (forward and reverse). Bear in mind that rotations around the animal’s center (i.e. rotations for chasing its tail) cannot be detected by this system. Figure 4-8 - Large Circles Values to Analyze Clockwise and Counterclockwise Rotations. - 34 -
MED ASSOCIATES INC. ACTIVITY MONITOR Figure 4-9 - Rotational Analysis for Medium Radius (6.5 Photobeams) Figure 4-10 - Rotational Analysis for Small Radius (2.75 Photobeams) - 35 -
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