Beam Traversal Test
Beam Traversal Test - Related Videos
01:12
Adjusting a Traverse
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2025
In the site survey of a four-sided traverse, internal angles are essential to ensure geometric accuracy. The survey revealed that the sum of the measured internal angles was 359 degrees and 48 minutes, which is 12 minutes less than the expected 360 degrees. This discrepancy signals an error likely arising from measurement inaccuracies during the fieldwork.To rectify this error, the adjustment process involved distributing the 12-minute shortfall equally across the four internal angles. By...
01:25
Design Example: Traverse Angle Computations
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2025
Traverse angle computations are a critical component of surveying, used to compute the internal angles within a closed traverse. A traverse consists of a series of connected lines forming a closed loop, often used for land boundary delineation or mapping. Calculating the internal angles ensures accuracy in the traverse geometry and is essential for checking survey data integrity.The process begins with known azimuths and bearings of the traverse sides. Internal angles at each vertex are...
07:03
Assessment of Motor Balance and Coordination in Mice using the Balance Beam
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Cited by 395 •
2011
Deficits in fine motor coordination can be assessed with the balance beam test. Performance on the beam is quantified by the speed at which the beam is traversed and the number of times the mouse slips on the beam.
09:30
Focused Ion Beams
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2023
Source: Sina Shahbazmohamadi and Peiman Shahbeigi-Roodposhti-Roodposhti, School of Engineering, University of Connecticut, Storrs, CT As electron microscopes become more complex and widely used in research labs, it becomes more of a necessity to introduce their capabilities. Focused ion beam (FIB) is an instrument that can be employed in order to fabricate, trim, analyze and characterize materials on mico- and nano-scales in a wide variety of fields from nano-electronics to medicine. FIB...
01:30
Beams
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2023
Beams are integral components of structural engineering and construction, designed to support loads applied at various points along their length. These long, straight members can be classified based on geometry, cross-section, support type, and equilibrium condition. Based on geometry, beams can be straight, tapered, or curved. Straight beams are the most common type and have a constant cross-section throughout their length. Tapered beams, on the other hand, have a varying cross-section along...
FAQs
Performance on the Beam Traversal Test reflects more than forward movement: the animal must coordinate paw placement, maintain balance, and regulate locomotion while crossing a restricted surface. These demands make the assay useful for detecting changes in fine motor control and sensorimotor function. The resulting behavior can provide evidence of altered neural circuit performance through several measurable outcomes.
Beam width changes the physical challenge presented during traversal. Comparing different widths can help reveal how strongly an animal depends on available surface area to maintain balance and coordinate its steps. A narrower beam generally creates a more demanding condition, allowing researchers to examine differences in motor control that may be less apparent on a wider beam.
These measures describe different aspects of task performance. Traversal time indicates how efficiently the animal completes the crossing, whereas paw slips and missteps document errors in placement or balance. Recording whether the animal reaches the safe platform adds an outcome measure for task completion. Considering the measures together gives a broader behavioral profile than any single value.
The animal is placed at one end of an elevated beam and required to cross toward a safe platform. During the crossing, researchers record variables such as completion time, paw slips, and missteps. The procedure can be repeated across beam widths or experimental conditions, allowing performance to be compared within an experimental design.
Researchers can compare outcomes among animals exposed to different experimental conditions, including neurological disease, injury, genetic modification, aging, or drug treatment. Beam width may also serve as a controlled task variable. These comparisons help identify changes in motor coordination or sensorimotor function and can show whether an intervention is associated with improved or impaired performance.
The assay is useful when a study needs quantitative evidence of motor deficits or changes in sensorimotor behavior. It can support investigations of neurological disease, injury, genetic modifications, aging, and drug effects. Because performance is recorded numerically, researchers can use the results to characterize neural circuit function and evaluate the behavioral effects of therapeutic interventions.