Your browser doesn't support javascript.
loading
Orientation selectivity mapping in the visual cortex.
Liu, Mei-Lan; Liu, Yi-Peng; Guo, Xin-Xia; Wu, Zhi-Yi; Zhang, Xiao-Tong; Roe, Anna Wang; Hu, Jia-Ming.
Afiliação
  • Liu ML; Department of Neurosurgery of the Second Affiliated Hospital, Interdisciplinary Institute of Neuroscience and Technology, School of Medicine, Zhejiang University, Hangzhou 310029, China; Key Laboratory for Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrum
  • Liu YP; Department of Neurosurgery of the Second Affiliated Hospital, Interdisciplinary Institute of Neuroscience and Technology, School of Medicine, Zhejiang University, Hangzhou 310029, China.
  • Guo XX; Department of Neurosurgery of the Second Affiliated Hospital, Interdisciplinary Institute of Neuroscience and Technology, School of Medicine, Zhejiang University, Hangzhou 310029, China.
  • Wu ZY; Eye Center, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310010, China.
  • Zhang XT; Department of Neurosurgery of the Second Affiliated Hospital, Interdisciplinary Institute of Neuroscience and Technology, School of Medicine, Zhejiang University, Hangzhou 310029, China; MOE Frontier Science Center for Brain Science and Brain-machine Integration, School of Brain Science and Brain Me
  • Roe AW; Department of Neurosurgery of the Second Affiliated Hospital, Interdisciplinary Institute of Neuroscience and Technology, School of Medicine, Zhejiang University, Hangzhou 310029, China; Key Laboratory for Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrum
  • Hu JM; Department of Neurosurgery of the Second Affiliated Hospital, Interdisciplinary Institute of Neuroscience and Technology, School of Medicine, Zhejiang University, Hangzhou 310029, China; MOE Frontier Science Center for Brain Science and Brain-machine Integration, School of Brain Science and Brain Me
Prog Neurobiol ; 240: 102656, 2024 Sep.
Article em En | MEDLINE | ID: mdl-39009108
ABSTRACT
The orientation map is one of the most well-studied functional maps of the visual cortex. However, results from the literature are of different qualities. Clear boundaries among different orientation domains and blurred uncertain distinctions were shown in different studies. These unclear imaging results will lead to an inaccuracy in depicting cortical structures, and the lack of consideration in experimental design will also lead to biased depictions of the cortical features. How we accurately define orientation domains will impact the entire field of research. In this study, we test how spatial frequency (SF), stimulus size, location, chromatic, and data processing methods affect the orientation functional maps (including a large area of dorsal V4, and parts of dorsal V1) acquired by intrinsic signal optical imaging. Our results indicate that, for large imaging fields, large grating stimuli with mixed SF components should be considered to acquire the orientation map. A diffusion model image enhancement based on the difference map could further improve the map quality. In addition, the similar outcomes of achromatic and chromatic gratings indicate two alternative types of afferents from LGN, pooling in V1 to generate cue-invariant orientation selectivity.
Assuntos
Palavras-chave

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Córtex Visual / Mapeamento Encefálico Limite: Animals / Humans / Male Idioma: En Revista: Prog Neurobiol Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Córtex Visual / Mapeamento Encefálico Limite: Animals / Humans / Male Idioma: En Revista: Prog Neurobiol Ano de publicação: 2024 Tipo de documento: Article