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Abstract(s)
As conexões entre os níveis corticais e os níveis sub-corticais na activação da marcha Humana carecem de discussão.
As alterações da marcha por lesão no território da Artéria Cerebral Média podem ser explicadas pela disfunção de circuitos neuronais dos Núcleos da Base ao córtex e Núcleos Pedúnculo-Pontinos, sendo para isso necessário identificar os percursos anatómicos das principais conexões entre as estruturas encefálicas referidas.
Com base na topografia das conexões neuronais, é aceitável que as alterações da marcha possam existir também devido a alterações na função dos Núcleos da Base, através das suas conexões, enquanto moduladores da actividade motora.
The connections between cortical and sub-cortical levels in human gait activation require discussion. The gait alterations after a lesion in the territory of the Middle Cerebral Artery can be explained by the dysfunction of neuronal circuits of the basal ganglia to the cortex and peduncle-pontine nuclei, and so it´s important to identify the anatomical pathways of the main connections between the brain structures mentioned. Based on the topography of neuronal connections it´s acceptable that gait alterations may also be due to dysfunctions in basal ganglia through their connections, as modulators of motor activity.
The connections between cortical and sub-cortical levels in human gait activation require discussion. The gait alterations after a lesion in the territory of the Middle Cerebral Artery can be explained by the dysfunction of neuronal circuits of the basal ganglia to the cortex and peduncle-pontine nuclei, and so it´s important to identify the anatomical pathways of the main connections between the brain structures mentioned. Based on the topography of neuronal connections it´s acceptable that gait alterations may also be due to dysfunctions in basal ganglia through their connections, as modulators of motor activity.
Description
Keywords
Marcha Circuitos neuronais Córtex Núcleos da base Núcleos pedúnculo-pontinos Gait Neural circuits Cortex Basal ganglia Pontine nuclei-peduncle
Citation
Publisher
Instituto Politécnico do Porto. Escola Superior de Tecnologia da Saúde do Porto