title: Tractography of the spider monkey (Ateles geoffroyi) corpus callosum using diffusion tensor magnetic resonance imaging.
abstract: The objective of this research was to describe the organization, connectivity and microstructure of the corpus callosum of the spider monkey (Ateles geoffroyi). Non-invasive magnetic resonance imaging and diffusion-tensor imaging were obtained from three subjects using a 3T Philips scanner. We hypothesized that the arrangement of fibers in spider monkeys would be similar to that observed in other non-human primates. A repeated measure (n = 3) of fractional anisotropy values was obtained of each subject and for each callosal subdivision. Measurements of the diffusion properties of corpus callosum fibers exhibited a similar pattern to those reported in the literature for humans and chimpanzees. No statistical difference was reached when comparing this parameter between the different CC regions (p = 0.066). The highest fractional anisotropy values corresponded to regions projecting from the corpus callosum to the posterior cortical association areas, premotor and supplementary motor cortices. The lowest fractional anisotropy corresponded to projections to motor and sensory cortical areas. Analyses indicated that approximately 57% of the fibers projects to the frontal cortex and 43% to the post-central cortex. While this study had a small sample size, the results provided important information concerning the organization of the corpus callosum in spider monkeys.
authors.affiliation: Instituto Profesional de la Región Sur, Universidad Autónoma del Estado de Morelos, Jojutla, Morelos, Mexico.
authors.forename: Diana
authors.initials: D
authors.lastname: Platas-Neri
authors.affiliation: Departamento de Neurocirugía, Hospital Infantil de México Federico Gómez, Mexico City, Distrito Federal, Mexico; Departamento de Física, Universidad Autónoma Metropolitana, Iztapalapa, Mexico City, Distrito Federal, Mexico.
authors.forename: Silvia
authors.initials: S
authors.lastname: Hidalgo-Tobón
authors.forename: Benito
authors.initials: B
authors.lastname: de Celis Alonso
authors.affiliation: Facultad de Ciencias Físico-Matemáticas, Benemérita Universidad de Puebla, Puebla, Puebla, Mexico.
authors.forename: Benito
authors.initials: B
authors.lastname: da Celis Alonso
authors.affiliation: Departamento de Neurocirugía, Hospital Infantil de México Federico Gómez, Mexico City, Distrito Federal, Mexico.
authors.forename: Fernando Chico-Ponce
authors.initials: FC
authors.lastname: de León
authors.affiliation: Dirección de Neurociencias, Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz, Mexico City, Distrito Federal, Mexico; Facultad de Psicología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City, Distrito Federal, Mexico.
authors.forename: Jairo
authors.initials: J
authors.lastname: Muñoz-Delgado
authors.affiliation: Psychology Department, Trinity University, San Antonio, Texas, United States of America.
authors.forename: Kimberley A
authors.initials: KA
authors.lastname: Phillips
mesh_terms: D000818:Animals; D016880:Anisotropy; D053819:Atelinae; D003337:Corpus Callosum / Q000033:anatomy & histology* / Q000502:physiology*; D038524:Diffusion Magnetic Resonance Imaging; D056324:Diffusion Tensor Imaging; D005260:Female; D008297:Male