title: Occipital White Matter Tracts in Human and Macaque.
abstract: We compare several major white-matter tracts in human and macaque occipital lobe using diffusion magnetic resonance imaging. The comparison suggests similarities but also significant differences in the tracts. There are several apparently homologous tracts in the 2 species, including the vertical occipital fasciculus (VOF), optic radiation, forceps major, and inferior longitudinal fasciculus (ILF). There is one large human tract, the inferior fronto-occipital fasciculus, with no corresponding fasciculus in macaque. We could identify the macaque VOF (mVOF), which has been little studied. Its position is consistent with classical invasive anatomical studies by Wernicke. VOF homology is supported by similarity of the endpoints in V3A and ventral V4 across species. The mVOF fibers intertwine with the dorsal segment of the ILF, but the human VOF appears to be lateral to the ILF. These similarities and differences between the occipital lobe tracts will be useful in establishing which circuitry in the macaque can serve as an accurate model for human visual cortex.
authors.affiliation: Center for Information and Neural Networks (CiNet), National Institute of Information and Communications Technology, and Osaka University, Suita-shi, Osaka 565-0871, Japan.|Graduate School of Frontier Biosciences, Osaka University, Suita-shi, Osaka 565-0871, Japan.
authors.forename: Hiromasa
authors.initials: H
authors.lastname: Takemura
authors.affiliation: Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN 47405, USA.
authors.forename: Franco
authors.initials: F
authors.lastname: Pestilli
authors.affiliation: Department of Psychology, Stanford University, Stanford, CA 94305, USA.
authors.forename: Kevin S
authors.initials: KS
authors.lastname: Weiner
authors.affiliation: Max Planck Institute for Biological Cybernetics, 72072 Tübingen, Germany.|Bio-Imaging Laboratory, Department of Biomedical Sciences, University of Antwerp, Wilrijk 2610, Belgium.
authors.forename: Georgios A
authors.initials: GA
authors.lastname: Keliris
authors.affiliation: Laboratory of Neural Systems, The Rockefeller University, New York, NY 10065, USA.
authors.forename: Sofia M
authors.initials: SM
authors.lastname: Landi
authors.affiliation: Laboratory of Neural Systems, The Rockefeller University, New York, NY 10065, USA.
authors.forename: Julia
authors.initials: J
authors.lastname: Sliwa
authors.affiliation: Neurophysiology Imaging Facility, National Institute of Mental Health, National Institute of Neurological Disorders and Stroke, National Eye Institute, National Institutes of Health, Bethesda, MD 20814, USA.
authors.forename: Frank Q
authors.initials: FQ
authors.lastname: Ye
authors.affiliation: Department of Psychology, Stanford University, Stanford, CA 94305, USA.
authors.forename: Michael A
authors.initials: MA
authors.lastname: Barnett
authors.affiliation: Neurophysiology Imaging Facility, National Institute of Mental Health, National Institute of Neurological Disorders and Stroke, National Eye Institute, National Institutes of Health, Bethesda, MD 20814, USA.
authors.forename: David A
authors.initials: DA
authors.lastname: Leopold
authors.affiliation: Laboratory of Neural Systems, The Rockefeller University, New York, NY 10065, USA.
authors.forename: Winrich A
authors.initials: WA
authors.lastname: Freiwald
authors.affiliation: Max Planck Institute for Biological Cybernetics, 72072 Tübingen, Germany.
authors.forename: Nikos K
authors.initials: NK
authors.lastname: Logothetis
authors.affiliation: Department of Psychology, Stanford University, Stanford, CA 94305, USA.
authors.forename: Brian A
authors.initials: BA
authors.lastname: Wandell
mesh_terms: D000818:Animals; D001931:Brain Mapping; D003337:Corpus Callosum / Q000000981:diagnostic imaging; D016208:Databases, Factual / Q000706:statistics & numerical data; D056324:Diffusion Tensor Imaging; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008253:Macaca mulatta; D008297:Male; D009413:Nerve Fibers, Myelinated / Q000502:physiology*; D009434:Neural Pathways / Q000000981:diagnostic imaging / Q000502:physiology*; D009778:Occipital Lobe / Q000033:anatomy & histology / Q000000981:diagnostic imaging*; D013045:Species Specificity; D066127:White Matter / Q000000981:diagnostic imaging*
keywords: comparative study; diffusion MRI; vertical occipital fasciculus; visual cortex; white matter