Tsukasa Obara

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In terrestrial gastropod mollusks (slugs and snails), olfaction is the dominant sensory modality guiding various kinds of behavior. Anatomical studies indicate that olfactory information is processed in the brain (the cerebral ganglion) in two lobes in particular: the procerebrum (PC) and the metacerebrum (MtC). This implies that olfactory functions emerge(More)
Olfactory information flows within the terrestrial slug's brain are presented. Because brain functions emerge from simultaneous and cooperative information processing in various brain regions, such information flows are important to understand mechanisms for communication among the neurons in brain. Three aspects concerning the information flows for(More)
A thirty-year-old housewife, who had been diagnosed as SLE, had been hyperkinetic and mute for 13 months after reiteration of manic-depressive episodes. In this condition she walked around without aim, ate and drank only with nursing help, and could not understand the circumstances around her; she was incontinent of urine and feces. Serological examination(More)
The ultrastructure of neurofibrillary tangles of Alzheimer's disease was analyzed by computerized digital processing of electron micrographs. Processing of the electron micrographs consists of four steps: digitizing the electron micrograph, Fourier transformation, noise filtering and inverse Fourier transformation and Laplacian operation. In the present(More)
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