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SUMMARY This paper describes a new method for detection and tracking of moving objects from a moving camera image sequence using robust estimation and active contour models. We assume that the apparent background motion between two consecutive image frames can be approximated by affine transformation. In order to register the static background, we estimate(More)
The flow of time in the real world may differ from the one in the neural representation of auditory scene stored in the sensory memory, because the encoded information is free from the rule of actual time. The sensory memory underlying the automatic discriminative system is reflected by the mismatch negativity (MMN). The time-wise image of preceding sounds(More)
The human auditory system is adapted to integrate temporally successive sounds into meaningful entities, that is, acoustic information units. Hence, sound sequences falling within the temporal window of integration should be coded holistically as unitary representations in the human auditory cortex. Although it is well established that the auditory system(More)
The present study addresses the difference in activities of frontal and temporal mismatch negativity (MMN) generators between healthy controls and schizophrenic patients. Auditory MMNs were measured from 13 medicated schizophrenic patients in a post-acute phase and 12 healthy controls. The probabilities of the standard stimuli were, in different(More)
We investigated why surgery alone provides for a benign clinical course in patients with desmoplastic infantile ganglioglioma and astrocytoma (DIG/A). The clinical course of 4, less than six-month-old girls, surgically treated at our institutions, was evaluated retrospectively. All presented with the clinical symptom of increasing head circumference. CT and(More)
The ultrastructure and the synaptic relationships of the orexin-A-like immunoreactive fibers in the dorsal raphe nucleus were examined with an immunoelectron microscopic method. At the electron microscopic level, most of the immunoreactive fibers, a varicosity appearance at the light microscopic level, were found as axon terminals. The large dense-cored(More)
Morphological relationships between neuropeptide Y- (NPY) like and ghrelin-like immunoreactive neurons in the arcuate nucleus (ARC) were examined using light and electron microscopy techniques. At the light microscope level, both neuron types were found distributed in the ARC and could be observed making contact with each other. Using a preembedding double(More)
OBJECTIVE Using neuroimaging, we analyzed the nature of extensive brain lesions in five anti-aquaporin-4 (AQP4) antibody-positive patients with neuromyelitis optica spectrum disorders. RESULTS Extensive brain lesions involved white matter in three, and basal ganglia and corpus callosum in one each. Four patients showed high diffusivity on apparent(More)
Neuromyelitis optica (NMO) is claimed to be a distinct disease entity from multiple sclerosis (MS) because of its strong association with NMO-IgG/anti-AQP4 antibody; however, the in vivo role of the antibody remains unknown. Therefore, we aimed to clarify whether the presence of anti-AQP4 antibody is associated with any abnormalities in multimodality-evoked(More)