Tadashi Sugihara

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The integration of auditory and visual stimuli is crucial for recognizing objects, communicating effectively, and navigating through our complex world. Although the frontal lobes are involved in memory, communication, and language, there has been no evidence that the integration of communication information occurs at the single-cell level in the frontal(More)
Attention depends on figure-ground organization: figures draw attention, whereas shapes of the ground tend to be ignored. Recent research has revealed mechanisms for figure-ground organization in the visual cortex, but how these mechanisms relate to the attention process remains unclear. Here we show that the influences of figure-ground organization and(More)
An object viewed from different angles can be recognized and distinguished from similar distractors after the viewer has had experience watching it rotate. It has been assumed that as an observer watches the rotation, separate representations of individual views become associated with one another. However, we show here that once monkeys learned to(More)
Humans have been recently shown to represent parameterized three-dimensional objects in a manner that preserves relative similarities (as measured by parameter-space distances) among the objects (Cutzu and Edelman 1996). We show that the representation of objects in the monkey visual system is similarly faithful to the parametric variation built into the(More)
A recent physiological finding of neural coding for border ownership (BO) that defines the direction of a figure with respect to the border has provided a possible basis for figure-ground segregation. To explore the underlying neural mechanisms of BO, we investigated stimulus configurations that activate BO circuitry through psychophysical investigation of(More)
M. Ohtake, H. Demura, J. Haruyama , N.Hirata, R. Nakamura, T. Sugihara 1 and H. Takeda, Lunar Mission Research Center, National Space Development Agency of Japan (NASDA), 2-1-1 Sengen, Tsukuba, Ibaraki 3058505 Japan, E-mail: ohtake.makiko@nasda.go.jp, Dept. Computer Software, Univ. of Aizu, Ikki-machi, AizuWakamatsu City, Fukushima 965-8580, Japan, E-mail:(More)
[1] We investigated the continuous spectral features of fresh craters on the Moon accompanied by distinctive bright rays, with cavity diameters between 8 and 24 km.We used the data from the Spectral Profiler onboard SELENE (Kaguya) to gain a better understanding of the composition of the lunar highland crust. We found that the observed spectra exhibited(More)
SELENE GRS. N. Yamashita, N. Hasebe, E. Shibamura, M.-N. Kobayashi, Y. Karouji, M. Hareyama, S. Kobayashi, O. Okudaira, T. Takashima, C. d’Uston, S. Maurice, O. Gasnault, O. Forni, B. Diez, R.C. Reedy , K.J. Kim, T. Arai, M. Ebihara, T. Sugihara, H. Takeda, K. Hayatsu, K. Iwabuchi, S. Nemoto, Y. Takeda, K. Tsukada, H. Nagaoka, T. Hihara, H. Maejima, S.(More)
The observation of figure-ground selectivity in neurons of the visual cortex shows that these neurons can be influenced by the image context far beyond the classical receptive field. To clarify the nature of the context integration mechanism, we studied the latencies of neural edge signals, comparing the emergence of context-dependent definition of border(More)
REVEALED BY THE CONTINUOUS VIS-NIR SPECTRA BY SPECTRAL PROFILER ON SELENE/KAGUYA. Y. Ogawa, T. Matsunaga, R. Nakamura, H. Takeda, M. Ohtake, T. Morota, T. Hiroi, T. Arai, K. Saiki, T. Sugihara, J. Haruyama, Y. Yokota, C. Honda, T. Nimura, N. Hirata, H. Demura, N. Asada, J. Terazono, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba,(More)