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Degeneration of subcortical\/cortical pathways is different between PD subtypes, which leads to differences in motor behavior. However, the influence of PD subtype on cortical activity during walking remains poorly understood. Therefore, we aimed to investigate the influence of PD motor subtypes on cortical activity during unobstructed walking and obstacle avoidance. Seventeen PIGD and 19 TD patients performed unobstructed walking and obstacle avoidance conditions. Brain activity was measured using a mobile functional near-infrared spectroscopy\u2013electroencephalography (EEG) systems, and gait parameters were analyzed using an electronic carpet. Concentrations of oxygenated hemoglobin (HbO2) of the prefrontal cortex (PFC) and EEG absolute power from alpha, beta, and gamma bands in FCz, Cz, CPz, and Oz channels were calculated. These EEG channels correspond to supplementary motor area, primary motor cortex, posterior parietal cortex, and visual cortex, respectively. Postural instability gait disorder patients presented higher PFC activity than TD patients, regardless of the walking condition. Tremor dominant patients presented reduced beta power in the Cz channel during obstacle avoidance compared to unobstructed walking. Both TD and PIGD patients decreased alpha and beta power in the FCz and CPz channels. In conclusion, PIGD patients need to recruit additional cognitive resources from the PFC for walking. Both TD and PIGD patients presented changes in the activation of brain areas related to motor\/sensorimotor areas in order to maintain balance control during obstacle avoidance, being that TD patients presented further changes in the motor area (Cz channel) to avoid obstacles.<\/jats:p>","DOI":"10.1093\/gerona\/glaa174","type":"journal-article","created":{"date-parts":[[2020,8,7]],"date-time":"2020-08-07T15:00:56Z","timestamp":1596812456000},"page":"561-567","source":"Crossref","is-referenced-by-count":41,"title":["Is Cortical Activation During Walking Different Between Parkinson\u2019s Disease Motor Subtypes?"],"prefix":"10.1093","volume":"76","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2278-8092","authenticated-orcid":false,"given":"Diego","family":"Orcioli-Silva","sequence":"first","affiliation":[{"name":"S\u00e3o Paulo State University (UNESP), Institute of Biosciences, Posture and Gait Studies Laboratory (LEPLO) , Rio Claro,","place":["Brazil"]},{"name":"Graduate Program in Movement Sciences, S\u00e3o Paulo State University (UNESP) , Rio Claro,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rodrigo","family":"Vit\u00f3rio","sequence":"additional","affiliation":[{"name":"S\u00e3o Paulo State University (UNESP), Institute of Biosciences, Posture and Gait Studies Laboratory (LEPLO) , Rio Claro,","place":["Brazil"]},{"name":"Graduate Program in Movement Sciences, S\u00e3o Paulo State University (UNESP) , Rio Claro,","place":["Brazil"]},{"name":"Department of Neurology, Oregon Health and Science University , Portland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4640-7733","authenticated-orcid":false,"given":"Victor Spiandor","family":"Beretta","sequence":"additional","affiliation":[{"name":"S\u00e3o Paulo State University (UNESP), Institute of Biosciences, Posture and Gait Studies Laboratory (LEPLO) , Rio Claro,","place":["Brazil"]},{"name":"Graduate Program in Movement Sciences, S\u00e3o Paulo State University (UNESP) , Rio Claro,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"N\u00fabia Ribeiro","family":"da Concei\u00e7\u00e3o","sequence":"additional","affiliation":[{"name":"S\u00e3o Paulo State University (UNESP), Institute of Biosciences, Posture and Gait Studies Laboratory (LEPLO) , Rio Claro,","place":["Brazil"]},{"name":"Graduate Program in Movement Sciences, S\u00e3o Paulo State University (UNESP) , Rio Claro,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Priscila","family":"N\u00f3brega-Sousa","sequence":"additional","affiliation":[{"name":"S\u00e3o Paulo State University (UNESP), Institute of Biosciences, Posture and Gait Studies Laboratory (LEPLO) , Rio Claro,","place":["Brazil"]},{"name":"Graduate Program in Movement Sciences, S\u00e3o Paulo State University (UNESP) , Rio Claro,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anderson Souza","family":"Oliveira","sequence":"additional","affiliation":[{"name":"Department of Materials and Production, Aalborg University ,","place":["Denmark"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lilian Teresa Bucken","family":"Gobbi","sequence":"additional","affiliation":[{"name":"S\u00e3o Paulo State University (UNESP), Institute of Biosciences, Posture and Gait Studies Laboratory (LEPLO) , Rio Claro,","place":["Brazil"]},{"name":"Graduate Program in Movement Sciences, S\u00e3o Paulo State University (UNESP) , Rio Claro,","place":["Brazil"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2020,7,16]]},"reference":[{"issue":"10","key":"2026041420073346100_CIT0001","doi-asserted-by":"crossref","first-page":"1529","DOI":"10.1212\/WNL.40.10.1529","article-title":"Variable expression of Parkinson\u2019s disease: a base-line analysis of the DATATOP cohort. 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