A5051023764- Visual perception and processing mechanisms
- Motor Control and Adaptation
- Neural dynamics and brain function
- Neural and Behavioral Psychology Studies
- EEG and Brain-Computer Interfaces
- Vestibular and auditory disorders
- Tactile and Sensory Interactions
- Animal Vocal Communication and Behavior
- Geological and Geochemical Analysis
- Functional Brain Connectivity Studies
- Advanced Vision and Imaging
- Gaze Tracking and Assistive Technology
- Marine animal studies overview
- Cognitive and developmental aspects of mathematical skills
- High Temperature Alloys and Creep
- Genetic Neurodegenerative Diseases
- Pancreatitis Pathology and Treatment
- Vibrio bacteria research studies
- Fatigue and fracture mechanics
- Regulation of Appetite and Obesity
- Animal Behavior and Reproduction
- Ophthalmology and Eye Disorders
- Neuropeptides and Animal Physiology
- Biochemical Analysis and Sensing Techniques
- Visual Attention and Saliency Detection
Osaka University
2013-2024
Princeton University
2024
Ube Frontier University
2019
Japan Society for the Promotion of Science
2015
Juntendo University
1992-2014
University of Tokyo Hospital
2013
Tokyo Medical and Dental University
2006-2007
Chiba Prefectural Institute of Public Health
1992
Cognition is remarkably flexible; we are able to rapidly learn and perform many different tasks
It has been proposed that motor adaptation depends on at least two learning systems, one learns fast but with poor retention and another slowly better (Smith MA, Ghazizadeh A, Shadmehr R. PLoS Biol 4: e179, 2006). This two-state model shown to account for a range of behavior in the force field task. In present study, we examined whether such could also arising from prismatic displacement visual field. We first confirmed an "adaptation rebound," critical prediction model, occurred when...
Cerebellar damage can profoundly impair human motor adaptation. For example, if reaching movements are perturbed abruptly, cerebellar impairs the ability to learn from perturbation-induced errors. Interestingly, perturbation is imposed gradually over many trials, people with may exhibit improved However, this result controversial, since differential effects of gradual vs. abrupt protocols have not been observed in all studies. To examine question, we recruited patients pure ataxia due...
Imprinting behavior is one form of learning and memory in precocial birds. With the aim elucidating neural basis for visual imprinting, we focused on information processing.A lesion wulst, which similar functionally to mammalian cortex, caused anterograde amnesia imprinting behavior. Since color an object was important cues investigated processing wulst. Intrinsic optical signals from wulst were detected early posthatch period peak regions responses red, green, blue spatially organized...
Our brains represent the position of a visual stimulus egocentrically, in either retinal or craniotopic coordinates. In addition, recent behavioral studies have shown that is automatically represented allocentrically relative to large frame background. Here, we investigated neural correlates 'background coordinate' using an fMRI adaptation technique. A red dot was presented at different locations on screen, combination with rectangular also locations, while participants looked fixation...
Many previous studies have reported that our brains are able to encode a target position not only in body-centered coordinates but also terms of landmarks the background. The importance such allocentric memory increases when we forced complete delayed reaching task after has disappeared. However, merit natural situations which free make an immediate reach toward remained elusive. We hypothesized is essential even for dissociating between error attributable motor system and motion. show here...
Abstract Chick imprinting behavior is a good model for the study of learning and memory. Imprinting object recognized processed in visual wulst, memory stored intermediate medial mesopallium dorsal pallium telencephalon. We identified chicken cholecystokinin (CCK)‐expressing cells localized these area. The number CCK mRNA‐positive increased chicks underwent training, expressed nuclear Fos immunoreactivity at high frequency regions. Most CCK‐positive were glutamatergic negative parvalbumin...
Visual information is initially represented in retinotopic coordinates and later craniotopic coordinates. Psychophysical evidence suggests that visual further more general related to the external world; however, neural basis of nonegocentric remains elusive. This study investigates automatic transformation from egocentric macaque precuneus (two males, one female), identified by a functional imaging as key area for representation. We found 6.2% neurons have receptive fields (RFs) anchored...
We previously showed that the brain automatically represents a target position for reaching relative to large square in background. In present study, we tested whether natural scene with many complex details serves as an effective background representing target. first experiment, used upright and inverted pictures of scene. A shift significantly attenuated prism adaptation movements long they were upright. one-third participants, was almost completely cancelled or inverted. It remarkable...
Clinical isolate of Vibrio mimicus were examined for production cell-associated hemagglutinin (HA) and pili adherence to formalin-fixed human intestinal mucosa, V. grown on CFA agar 3 h at 37°C possessed HA adhered better the mucus layer than epithelial cell surface. A significant correlation was found between titers ability surface villi (P < 0.05); ileal lymphoid follicle associated epithelium occured higher levels. In contrast, 20 exhibited lower levels reduced ability. The more...