Research reportProximal and distal impairments in rat forelimb use in reaching follow unilateral pyramidal tract lesions
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2022, Experimental NeurologyCitation Excerpt :It is possible that an animal could fully recapitulate pre-injury levels of pronation and trajectories according to our assay while still exhibiting some other compensatory motor changes outside the scope of our analysis. Previous studies indicated that pronation would be one of the movement capabilities most disrupted by a corticospinal tract injury in both rat and mice (Whishaw et al., 1993, Wang et al., 2017, Ueno et al., 2018). Correspondingly, our hypothesis was that wrist rotation would be one of the most enduring deficits after DLQ.
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2021, Neurobiology of Learning and MemoryCitation Excerpt :Briefly, this analysis describes the movements of the distal portion of each limb in relation to its proximal portion in a temporal sequence. As a result, a reach is subdivided into orienting to the food and 10 elements of limb movement (Whishaw & Pellis, 1990; Whishaw, Pellis, Gorny, Kolb, & Tetzlaff, 1993): (1) Sniff: the rat will approach the front of the box and sniff the pellet before beginning to initiate a reach. ( 2) Digits to midline: the limb is lifted from the floor with the upper arm and the digits adducted to the midline of the body. (