Basal ganglia mechanisms underlying precision grip force control
نویسندگان
چکیده
منابع مشابه
Basal ganglia hypoactivity during grip force in drug naïve Parkinson's disease.
The basal ganglia (BG) are impaired in Parkinson's disease (PD), but it remains unclear which nuclei are impaired during the performance of motor tasks in early-stage PD. Therefore, this study was conducted to determine which nuclei function abnormally, and whether cortical structures are also affected by early-stage PD. The study also determined if cerebellar hyperactivity is found early in th...
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When moving objects with a precision grip, fingertip forces normal to the object surface (grip force) change in parallel with forces tangential to the object (load force). We investigated whether voluntary wrist actions can affect grip force independent of load force, because the extrinsic finger muscles cross the wrist. Grip force increased with wrist angular speed during wrist motion in the h...
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The basal ganglia are an interconnected circuit of foreand midbrain nuclei common to all extant vertebrates, including the lamprey, which diverged from the main vertebrate line approximately 560MYA.Moreover, there are analogous structures in birds and bony fish. The preservation of this circuit implies a crucial operation that solves a problem common to all vertebrates. While many functions for...
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ژورنال
عنوان ژورنال: Neuroscience & Biobehavioral Reviews
سال: 2009
ISSN: 0149-7634
DOI: 10.1016/j.neubiorev.2009.03.004