Search Results 1-20 of 215

  • Dynamics of Stimulus Selectivity in Inferotemporal Neurons

    Dai Lulin , Okamura Jun-ya , Wang Gang

    … <p>Neuroscientists usually investigate stimulus selectivity by using a stimulus set and identifying the stimulus that evokes the largest electrophysiological responses averaged over a certain time period. … However, the visual environment, and hence the brain activity, changes all the time. … A method with sufficiently high temporal resolution for the investigation of dynamic changes in stimulus selectivity is desired. …

    Advanced Biomedical Engineering 9(0), 93-99, 2020


  • Carbon dioxide capture and efficient fixation in a dynamic porous coordination polymer

    Wu Pengyan , Li Yang , Zheng Jia-Jia , Hosono Nobuhiko , Otake Ken-ichi , Wang Jian , Liu Yanhong , Xia Lingling , Jiang Min , Sakaki Shigeyoshi , Kitagawa Susumu

    プロペラ様の構造をもつ多孔性材料を開発 --二酸化炭素を捉えて有機分子へ--. 京都大学プレスリリース. 2019-10-09.

    Nature Communications (10), 2019-09-25


  • Modulation of visual representation in the brain  [in Japanese]

    Osakada Fumitaka

    Visual information from the world enters the eye and reaches the retina. … Ganglion cells in the retina send the information via the lateral geniculate nucleus to the primary visual cortex (V1). … Neurons in V1 extract simple local features such as oriented lines and edges, by responding selectively to lines or edges with a particular slope (orientation selectivity). …

    Proceedings for Annual Meeting of The Japanese Pharmacological Society 92(0), 3-S28-4, 2019


  • A Sensitive and Selective Method for Visual Chronometric Detection of Copper(II) Ions Using Clock Reaction

    YALING Yue , YI He

    … <p>We report a visual chronometric method for the detection of copper(II) ions (Cu<sup>2+</sup>) using the clock reaction between methylene blue (MB) and hydrazine (N<sub>2</sub>H<sub>4</sub>). … This visual chronometric assay shows a dynamic range from 0.2 to 16 μM with a limit of detection of 20 nM. … Additionally, it has good selectivity toward Cu<sup>2+</sup> …

    Analytical Sciences 35(2), 159-163, 2019


  • Interactions Elicited by the Contradiction Between Figure Direction Discrimination and Figure-Ground Segregation

    Wagatsuma Nobuhiko , Urabe Mika , Sakai Ko , 酒井 宏

    … A majority of neurons in monkey V2 showed the selectivity to border ownership (BO) that indicates which side of a contour owns the border. … To understand the mechanisms underlying the perception of figural regions, we investigated the interaction between the local BO determination and the global FG segregation through the quantitative analysis of the visual perception and the spatiotemporal characteristics of eye movements. …

    Frontiers in Psychology (9), 1681, 2018-09


  • A border-ownership model based on computational electromagnetism

    Zaem Arif Zainal , Shunji Satoh

    … The mathematical relation between a vector electric field and its corresponding scalar potential field is useful to formulate computational problems of lower/middle-order visual processing, specifically related to the assignment of borders to the side of the object: so-called border ownership (BO). … Model results qualitatively agree with object-side selectivity of BO-coding neurons, and with perceptions of object order. …

    Neural Networks (99), 114-122, 2018-03


  • Congenital nystagmus―Nature and a hidden essential characteristic  [in Japanese]

    Okada Tomoyuki

    … Despite its various waveforms, people with CN do not develop visual symptoms and rarely complain of oscillopsia. … In the retina of FRMD7-mutant mice, horizontal direction selectivity and asymmetry of inhibitory inputs to horizontal direction-selective retinal ganglion cells (HDSCs) are both lost. …

    Equilibrium Research 77(4), 201-219, 2018

    J-STAGE  Ichushi Web 

  • Fast Detection of Bismerthiazol in Cabbage Based on Fluorescence Quenching of Protein-Capping Gold Nanoclusters

    CHENG Yuliang , ZHANG Yao , PEI Renjun , XIE Yunfei , YAO Weirong , GUO Yahui , QIAN He

    … The high affinity of bismerthiazol to interact with the soybean protein-capped gold nanoclusters contributed to the excellent selectivity of this method over other common pesticides. … By comparison to previous reported approaches, this method bears advantages including simple operation, fast response, visual readout and good selectivity. …

    Analytical Sciences 34(4), 415-419, 2018


  • Visuomotor signals for reaching movements in the rostro-dorsal sector of the monkey thalamic reticular nucleus

    Saga Yosuke , Nakayama Yoshihisa , Inoue Ken-ichi , Yamagata Tomoko , Hashimoto Masashi , Tremblay Léon , Takada Masahiko , Hoshi Eiji

    … We found that neurons in the TRNrd and PMv showed visual-, set-, and movement-related activity modulation. … These results indicate that the TRNrd, as well as the PMv, is involved in the reception of visual signals and in the preparation and execution of reaching movements. … The fraction of neurons that were non-selective for the location of visual signals or the direction of reaching movements was greater in the TRNrd than in the PMv. …

    European Journal of Neuroscience 45(9), 1186-1199, 2017-05


  • Modeling the Time-Course of Responses for the Border Ownership Selectivity Based on the Integration of Feedforward Signals and Visual Cortical Interactions

    Wagatsuma Nobuhiko , Sakai Ko , 酒井 宏

    … The majority of neurons in V2 and V4 areas of monkeys exhibit BO selectivity. … The rapid transition seemed to reflect the influence of feedforward processing on BO selectivity. … Herein, we investigated the role of feedforward signals and cortical interactions for time-courses in BO-selective cells by modeling a visual cortical network comprising V1, V2, and posterior parietal (PP) modules. …

    Frontiers in Psychology (7), 2084, 2017-01-20


  • The time compression effect induced by visual masking has a spatial selectivity  [in Japanese]

    Asaoka Riku , Gyoba Jiro

    The Proceedings of the Annual Convention of the Japanese Psychological Association 81(0), 1C-047-1C-047, 2017


  • Response frequency to a specific target does not affect the performance and visual attention  [in Japanese]

    Watanabe Yurina , Yoshizaki Kazuhito

    Visual attention refers to cognitive functions for selecting task-relevant information and filtering out task-irrelevant information. … Psychological research on visual attention has utilized congruency effects observed in Stimulus-Response compatibility paradigms, such as the Stroop task, the Flanker task, and the Simon task as the benchmark for investigating cognitive control. …

    Journal of Human Environmental Studies 15(1), 3-7, 2017


  • Visual Detection of Cesium Ions in Domestic Water Supply or Seawater using a Nano-optode

    Akamatsu Masaaki , Komatsu Hirokazu , Matsuda Atsuki , Mori Taizo , Nakanishi Waka , Sakai Hideki , Hill Jonathan P. , Ariga Katsuhiko

    … An optode membrane was prepared incorporating a calix[6]arene derivative, which showed excellent selectivity toward cesium ions in aqueous solutions, even in water supplied for domestic use or seawater. …

    Bulletin of the Chemical Society of Japan 90(6), 678-683, 2017


  • Adjustment of visual selectivity in tasks with coexisting Simon- and Stroop-like conflicts  [in Japanese]

    Watanabe Yurina , Yoshizaki Kazuhito

    <p>The proportion congruency (PC) effect is a congruency effect that decreases as the ratio of congruent to incongruent trials within a given block increases. Researchers have been interested in …

    The Japanese journal of psychology 88(3), 267-273, 2017


  • Expression of Nicotinic Acetylcholine Receptor α4 and β2 Subunits on Direction-Selective Retinal Ganglion Cells in the Rabbit

    Lee Jun-Seok , Kim Hyun-Jin , Ahn Chang-Hyun , Jeon Chang-Jin

    … <p>The direction selectivity of the retina is a distinct mechanism that is critical function of eyes for survival. … The direction-selective retinal ganglion cells (DS RGCs) strongly respond to a preferred direction, but rarely respond to opposite direction or null directional visual stimuli. …


    J-STAGE  Ichushi Web 

  • The Validity of Network In Network as a Visual System : From the Point of View of the Orientation Selectivity Map  [in Japanese]

    鈴木 聡志 , 庄野 逸

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 116(209), 113-120, 2016-09-05

  • The Validity of Network In Network as a Visual System : From the Point of View of the Orientation Selectivity Map  [in Japanese]

    鈴木 聡志 , 庄野 逸

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 116(208), 113-120, 2016-09-05

  • Functional structures of spatial frequency processing and their activity patterns in the primary visual cortex  [in Japanese]

    田中 宏喜

    脳視覚情報処理の第一段階にある第一次視覚野において,異なる空間周波数成分の情報が統合される仕組みを解明するために,多点電極アレイにより同時計測されたV1野細胞集団の協調的活動を詳しく解析した。その結果,似た空間周波数選択性をもつ細胞がコラム方向に並び,その最適空間周波数の類似性が,応答潜時が長くなるにつれて低くなることが示唆された。またこれらの細胞が様々な時間スケールで活動同期しており,その同期が …

    京都産業大学総合学術研究所所報 (11), 137-140, 2016-07


  • Response modes modulate visual selectivity  [in Japanese]

    Doi Ayana , Watanabe Yurina , Yoshizaki Kazuhito

    刺激反応適合性パラダイムにおいては,直前試行の適合性によって現試行の適合性効果は変動する。現試行の適合性効果は,直前試行が一致よりも不一致試行で減少する。この視覚情報選択性の調整(Gratton効果)は,競合を経験したことで,注意が動員されたためだと考えられる。近年,回避動機づけに比べ,接近動機づけが注意の動員をもたらすことが報告されている。そこで,腕の屈曲伸展動作を使って,接近回避動機づけを操作 …

    Proceedings of the Japanese Society for Cognitive Psychology 2016(0), 61, 2016


  • Does Fasting Modulate Physio-Psychological Responses to Emotional Pictures? An Analysis by MEG, VAS and Peripheral Physiological Markers

    Mizobe Kayo , Yokosawa Koichi , Shimojo Atsushi , Ozaki Michitaka

    … Psychological scores using a visual analog scale (VAS) indicate that the emotional valence of the selected pictures was perceived by the participants as expected. … Since it is known that alpha rhythm is suppressed by attention to visual input, these results suggest that attention to pleasant stimuli is lost under fasting-induced stress. …

    Advanced Biomedical Engineering 5(0), 88-93, 2016

    J-STAGE  Ichushi Web 

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