Neuronal representation of visual salience in macaque posterior parietal cortex

猕猴后顶叶皮层视觉显着性的神经元表征

• 批准号: 20500283
• 负责人: OGAWA Tadashi
• 金额: $ 3.08万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20500283/
• 关键词: 注意; 視覚的顕在性; 視覚探索; サル; サッカード; ニューロン活動; Yisaal saliency; 眼球運動; LIP; 視覚選択; Visual salienc; visual saliency; 頭頂連合野

We found that a subset of neurons in the posterior parietal cortex (PPC) significantly discriminated the target from other stimuli only when the target was defined by a particular stimulus dimension and had specific stimulus features, such as a shape-singleton, bar stimulus (condition-dependent target selection), whereas another subset did so irrespective of the stimulus features and the target-defining dimension (condition-independent target selection). There was thus a great deal of variety in the neural representations specifying the locus of the target. The coexistence of these distinctly different types of target-discrimination processes suggests that the PPC may be situated at the level where the transition from nonspatial- to spatial-based target selection takes place.

我们发现，只有当目标由特定的刺激维度定义并且具有特定的刺激特征，例如形状单点，条形刺激时，后顶叶皮层（PPC）中的一个神经元子集才能将目标与其他刺激区分开来（条件依赖的目标选择），而另一个子集这样做，而不管刺激特征和目标定义的维度（条件无关的目标选择）。因此，在确定目标位置的神经表征中存在着大量的变化。这些明显不同类型的目标识别过程的共存表明，PPC可能位于从非空间的过渡到基于空间的目标选择发生的水平。

项目成果

Distribution of colour-selective activity in the monkey inferior temporal cortex revealed by functional magnetic resonance imaging

• DOI: 10.1111/j.1460-9568.2009.06995.x
• 发表时间: 2009-11-01
• 期刊: EUROPEAN JOURNAL OF NEUROSCIENCE
• 影响因子: 3.4
• 作者: Harada, Takuya;Goda, Naokazu;Komatsu, Hidehiko
• 通讯作者: Komatsu, Hidehiko

Relating neuronal firing patterns to functional differentiation of cerebral cortex.

• DOI: 10.1371/journal.pcbi.1000433
• 发表时间: 2009-07
• 期刊: PLoS computational biology
• 影响因子: 4.3
• 作者: Shinomoto S;Kim H;Shimokawa T;Matsuno N;Funahashi S;Shima K;Fujita I;Tamura H;Doi T;Kawano K;Inaba N;Fukushima K;Kurkin S;Kurata K;Taira M;Tsutsui K;Komatsu H;Ogawa T;Koida K;Tanji J;Toyama K
• 通讯作者: Toyama K

Neural mechanisms underlying trial-and-error behaviors in the macaque prefrontal cortex

猕猴前额叶皮层试错行为背后的神经机制

• 发表时间: 2009
• 期刊: The 3rd International Symposium on Mobiligence, Awaji-Iland
• 作者: Fujimoto A;Tanaka;T;Ogawa T
• 通讯作者: Ogawa T

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Neural activity in macaque prefrontal cortex during learning through trial-and-error behaviors

通过试错行为学习期间猕猴前额叶皮层的神经活动

• 发表时间: 2010
• 作者: 藤本淳;西田知史;田中智洋;小川正
• 通讯作者: 小川正