The Experts below are selected from a list of 246 Experts worldwide ranked by ideXlab platform
Marco Santello - One of the best experts on this subject based on the ideXlab platform.
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Role of human premotor Dorsal Region in learning a conditional visuomotor task.
Journal of neurophysiology, 2016Co-Authors: Pranav J. Parikh, Marco SantelloAbstract:Conditional learning involves stimulus identification, motor response selection, response monitoring, memory encoding, and recall of the learned association. Premotor Dorsal (PMd) has been implicat...
David C. Lyon - One of the best experts on this subject based on the ideXlab platform.
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The case for a Dorsal V3 in the ‘third-tier’ of primate visual cortex: a reply to ‘the case for a dorsomedial area in the primate ‘third-tier’ visual cortex’
Proceedings of the Royal Society B: Biological Sciences, 2013Co-Authors: David C. LyonAbstract:The commentary by Rosa et al. , argues that while a V3-like area (VLP), termed VLP, is present in the V3v Region immediately adjacent to the ventral half of V2; Dorsally, a V3d is not found along the Dorsal half of V2 in any primate species. Instead, the Dorsal Region (which represents the lower
Kentaro Arikawa - One of the best experts on this subject based on the ideXlab platform.
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Eyes with basic Dorsal and specific ventral Regions in the glacial Apollo, Parnassius glacialis (Papilionidae).
The Journal of experimental biology, 2010Co-Authors: Hiroko Awata, Atsuko Matsushita, Motohiro Wakakuwa, Kentaro ArikawaAbstract:Recent studies on butterflies have indicated that their colour vision system is almost species specific. To address the question of how this remarkable diversity evolved, we investigated the eyes of the glacial Apollo, Parnassius glacialis, a living fossil species belonging to the family Papilionidae. We identified four opsins in the Parnassius eyes--an ultraviolet- (PgUV), a blue- (PgB), and two long wavelength (PgL2, PgL3)-absorbing types--and localized their mRNAs within the retina. We thus found ommatidial heterogeneity and a clear dorso-ventral Regionalization of the eye. The Dorsal Region consists of three basic types of ommatidia that are similar to those found in other insects, indicating that this Dorsal Region retains the ancestral state. In the ventral Region, we identified two novel phenomena: co-expression of the opsins of the UV- and B-absorbing type in a subset of photoreceptors, and subfunctionalization of long-wavelength receptors in the distal tier as a result of differential expression of the PgL2 and PgL3 mRNAs. Interestingly, butterflies from the closely related genus Papilio (Papilionidae) have at least three long-wavelength opsins, L1-L3. The present study indicates that the duplication of L2 and L3 occurred before the Papilio lineage diverged from the rest, whereas L1 was produced from L3 in the Papilio lineage.
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Two visual pigment opsins, one expressed in the Dorsal Region and another in the Dorsal and ventral Regions, of the compound eye of a dragonfly, Sympetrum frequens.
Invertebrate neuroscience : IN, 1996Co-Authors: Kentaro Arikawa, Koichi Ozaki, Takanari Tsuda, Junko Kitamoto, Yuji MishinaAbstract:This paper describes the primary structure of two visual pigment opsins (DfRh1 and DfRh2) in the Regionalized compound eye of a dragonfly,Sympetrum frequens. The amino acid sequences were deduced from the nucleotide sequences of cDNAs isolated from a cDNA library of the dragonfly retina. The two opsins both consist of 379 amino acids with 81.3% identity. Analysis of hydropathy indicated that the sequences have seven transmembrane domains like those of previously described opsins. Expression analysis using RT-PCR revealed that DfRh1 was present only in the Dorsal Region whereas DfRh2 was detected in both the Dorsal and the ventral Regions of the eye.
Cristina Kurachi - One of the best experts on this subject based on the ideXlab platform.
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Monitoring of Ehrlich tumor growth using thermal image
Biomedical Optics 2016, 2016Co-Authors: Mirian D. Stringasci, Lilian Tan Moriyama, Clovis Grecco, José Dirceu Vollet Filho, Vanderlei Salvador Bagnato, Cristina KurachiAbstract:In this study, we injected Ehrlich tumor cell in the Dorsal Region of nine Swiss mouse. The tumor in growth was assessed using thermography to monitor temperature changes and to observe the minimal tumor size that can be detected.
Hironobu Ito - One of the best experts on this subject based on the ideXlab platform.
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Area Dorsalis pars lateralis of the telencephalon in a teleost (Sebastiscus marmoratus) can be divided into Dorsal and ventral Regions.
Brain behavior and evolution, 1996Co-Authors: Yoichi Yamane, Masami Yoshimoto, Hironobu ItoAbstract:Area Dorsalis pars lateralis was shown to be subdivided into a Dorsal Region and a ventral Region by a shallow groove on the telencephalic surface. In the Dorsal Region, three layers were distinguished by Nissl staining; a surface layer I, a middle layer II, and a deep layer III. Although a three-layered structure was also observed in the ventral Region, it was not as clear as that in the Dorsal Region. Cells in area Dorsalis pars lateralis were classified by Golgi-Cox staining into 5 types; small cells, horizontal cells, pyriform cells, inverted cells, and multipolar cells. The distribution of zinc was examined by the Neo-Timm method and found to be present in layers I and II and weakly in layer III of the Dorsal Region but not in layers I and II of the ventral Region. The presence of zinc in synaptic terminals in the Dorsal Region was verified by analytical electron microscopy. Following separate and localized injections of horseradish peroxidase into Dorsal and ventral Regions, some different fiber connections were revealed. Both Dorsal and ventral Regions had reciprocal connections with ipsilateral area Dorsalis pars centralis, area ventralis pars supracommissuralis, area ventralis pars Dorsalis, area ventralis pars posterior, nucleus prethalamicus, and had afferent connections from area ventralis pars lateralis, area ventralis pars intermedia, raphe nuclei, and locus ceruleus. Only the Dorsal Region, however, received projections from contralateral area Dorsalis pars centralis, ipsilateral area Dorsalis pars Dorsalis, area Dorsalis pars medialis, and area Dorsalis pars posterior and sent fibers to the inferior lobe, nucleus paracommissuralis, and optic tectum. Although area Dorsalis pars lateralis had been thought to be a homogeneous Region of the primary visual area of the telencephalon, histochemistry of zinc and fiber connections of the Region indicates that the area is subdivided into two Regions: Dorsal and ventral.