Skilled Forelimb Performance
Skilled Forelimb Performance - Related Videos
08:59
Acquisition of a High-precision Skilled Forelimb Reaching Task in Rats
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Cited by 19 •
2015
A paradigm is presented to analyze the acquisition of a high-precision skilled forelimb reaching task in rats.
12:06
The Structure of Skilled Forelimb Reaching in the Rat: A Movement Rating Scale
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Cited by 54 •
2008
The skilled reaching scale divides the movement by a forelimb in a reach for food act into composite elements each of which are evaluated with a three-point scale. The rating scale is described for a normal rat and can be applied toward evaluating neurological motor disorders.
12:46
A Novel Method for Assessing Proximal and Distal Forelimb Function in the Rat: the Irvine, Beatties and Bresnahan (IBB) Forelimb Scale
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Cited by 54 •
2010
Here we will describe a rodent behavioral assay that can detect recovery of both proximal and distal forelimb function including digit movements during a naturally occurring behavior that does not require extensive training or deprivation to enhance motivation.
02:21
Direct Reconnection of Cervical Nerves to Restore Forelimb Mobility in a Mouse
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2025
Source: Gao, Z., et al. A Mouse Model of Direct Anastomosis via the Prespinal Route for Crossing Nerve Transfer Surgery. J. Vis. Exp. (2021).This video demonstrates restoring forelimb movement in a mouse via direct cervical nerve reconnection. It begins with a mouse with a paralyzed right forelimb due to a transected right C7 nerve at its nerve root. The left C7 nerve is severed, guided to the right via the prespinal route, and sutured with the right C7 nerve. The surgical site is then cleaned...
03:26
Measuring Compound Muscle Action Potentials in Mouse Forelimb Muscles In Vivo
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2025
This video demonstrates an in vivo technique for measuring compound muscle action potential (CMAP) in mice. It outlines the steps for setting up electrodes, stimulating forelimb neurons that innervate muscle fibers, and recording muscle responses. The technique assesses neuronal demyelination and functional neuron loss.
FAQs
Successful performance requires coordinated muscle activation, sensory feedback, and descending neural pathways to operate together. Muscle activation produces the movement, while sensory feedback can inform ongoing control, and descending signals connect the behavioral action with nervous-system control. Examining the combined performance therefore provides a behavioral window into sensorimotor integration rather than measuring movement in isolation.
Repeated trials reveal motor-skill acquisition by showing how performance changes with practice. Researchers can track accuracy, speed, and movement strategy across trials, then determine whether the animal becomes more effective, faster, or behaviorally different. These measures distinguish improvement in goal-directed control from a single successful or unsuccessful attempt.
Together, accuracy, speed, and movement strategy provide complementary outcome measures. A subject may show improved precision without the same change in speed, or may reach a target using a different strategy. Considering all three helps researchers characterize how motor behavior changes over time instead of reducing performance to one summary measure.
In a laboratory assay, the animal is presented with a target and observed while it reaches, grasps, retrieves, or manipulates it. The task is repeated so performance can be quantified across trials. Recording accuracy, speed, and movement strategy creates a structured behavioral readout for comparing motor control and learning.
The approach is used when researchers need to assess sensorimotor integration, lateralized function, or motor-skill acquisition. It is also suited to studies of nervous-system injury, disease, or treatment, because the same behavioral outcomes can quantify impairment and track recovery. Thus, the assay supports both basic behavior research and evaluation of changes linked to neural dysfunction.
In behavior research, the value of this measure comes from linking observable task performance with underlying neural circuit function. Reaching and manipulation require coordinated control, so altered accuracy, speed, or strategy can signal changes in that control. This makes the assay useful for interpreting behavioral consequences of nervous-system injury, disease, or treatment.