视觉刺激

目的：探讨在短暂视觉刺激情况下，大脑初级视觉皮层（V1）的血氧水平依赖（BOLD）性响应的时间特性。

Purpose : To investigate the temporal characteristics of BOLD responses to brief visual stimulation of the human primary visual cortex ( V1 ) .

基于P300的脑机接口，重要的问题就是将与视觉刺激反应相关联的脑电信号进行提取和分类。

Associated to this BCI paradigm , there is the problem of classifying electroencephalogram signals related to responses to some visual stimulation .

旋转光栅视觉刺激生理成分的功能MRI研究

Study of physiology of visual cortex activated by rotating grating with functional MRI

不同持续时间的短暂视觉刺激引起的BOLD响应在初级皮层区的时间特性

Temporal Characteristics of BOLD Response to Brief Visual Stimuli of Varying Duration in Human V1

苹果公司（Apple）不得不在其移动操作系统中额外添加了辅助功能设置，以降低对用户的视觉刺激。

Apple had to add extra accessibility settings to its mobile operating system to allow users to tone down the visual stimuli .

前刺激S1和后刺激S2皆为视觉刺激信号；

The preceding stimulus and the succeeding stimulus were both visual stimuli ;

人脑初级视皮层内事件相关型视觉刺激fMRIBOLD响应特性初步研究

On properties of event-related fMRI BOLD response in primary visual cortex of human brain during visual stimulation

结论：BOLD信号对视觉刺激频率的依赖性可能受视觉刺激类型的影响。

Conclusion : This study may suggest that BOLD response depended on the temporal frequency could be influenced by visual stimulus pattern .

结果表明Gamma频带能量对不同视觉刺激特征具有不同的响应，与spike信号的调谐特性具有较好一致性。

The results showed that the Gamma band reflected different response to different visual stimuli , and it was consistent with spike .

方法对60名青少年及47名老年健康志愿者做单音、图像及汉字结构识别视觉刺激的ERP研究。

Methods ERPs of target stimulation with tone , picture and characters of Chinese words were studied in 60 healthy adolescent volunteers and 47 healthy aging volunteers .

光的视觉刺激在脑~（18）F-FDG代谢显像中的作用

Role of light visual sense stimulation in the brain ~ ( 18 ) F-FDG metabolism analysis

然而，老年猫V1神经元对视觉刺激反应的MF和BF的相关性相对于青年猫显著升高。

However , relative to young adult cats , the correlation of MF and BF of V1 neurons in old cats is significantly increased during adaptation to visual stimulation .

黑白棋盘格视觉刺激源时BOLD响应对闪烁频率的非依赖性方法以对照法和棋盘滴定法确定ELISA方法测定尿液sIgA的最适实验条件。

Frequency-Independent BOLD Response to Reversing Checkerboard Stimulation Observed in Human Primary Visual Cortex Using fMRI Methods The optimal experimental conditions of ELISA for sIgA were ascertained by comparison method and chessboard titration .

Elliot（2001）用跨通道Stroop任务对习惯化理论进行了探讨，但是听觉刺激和视觉刺激的加工通路不同，加工速度存在差异，这可能影响刺激间的干扰效果；

Elliot ( 2001 ) explored the differences using the cross-modal Stroop task . But the speeds of processing auditory and visual stimulus may be different .

对这两个问题的一个解答是在《自然》杂志上发表的Mulleratal。（2003）的一份研究报告中采用。它依靠于对某些视觉刺激大脑做出的一种奇特电反应。

One solution to these two problems was used in a study by Muller at al . ( 2003 ) published in Nature which relies on a quirk of the brain 's electrical response to certain visual stimuli .

实验结果显示：在不同的计数Stroop视觉刺激条件下，正常被试与抑郁症患者行为数据的反应时间有显著性差异，并推论这些差异可能与抑郁症患者注意执行功能障碍有关。

Reaction time has been observed significant difference between normal subjects and depression patients in three different conditions , which was probably related with attention executing function disorder of depression patients .

青年猫和老年猫V1神经元对视觉刺激的适应过程中，神经元对视觉刺激的平均发放频率（MF）与簇发放频率（BF）有很高的相关性。

Our results show that during adaptation , the mean firing rate ( MF ) of V1 neurons to visual stimulation is highly correlated with its burst firing frequency ( BF ) in both old and young adult cats .

实验结果表明，该方法改善了原有算法的收敛性能，盲源分离效果良好，并可在减少视觉刺激次数的前提下，有效地实现VEP信号增强和参数提取。

Simulation and application experiment results show that the proposed algorithm can improve the convergence performance and effect of blind signal separation . The reinforcing and parameter extraction of VEP can be realized effectively on the premise of fewer vision stimulations .

材料与方法：通过磁共振功能成像（fMRI）的方法，在黑白棋盘格视觉刺激源的切换频率从4～14Hz范围内，在初级视觉皮层（V1）区内分别测量BOLD响应。

Materials and Methods : The blood oxygenation level dependent ( BOLD ) response to a black and white checkerboard at various reversing frequencies between 4 Hz and 14 Hz was measured in the primary visual cortex using functional magnetic resonance imaging ( fMRI ) .

系统设计实现了基于图形闪烁的视觉刺激模块，通过滤波、频谱分析等数字信号处理方法对采集到的SSVEP信号进行特征提取，从而实现对外部设备机械手臂的控制。

The system designs and implements the visual stimulator module and extracts the characters through many digital signals processing methods , for example filter and frequency analysis , so as to control the peripheral equipment like robotic arm .

Frick成功地增加了混合通道的广度，其必要条件是同时呈现视觉刺激和反序报告。

Frick ( 1984 ) found that using both an auditory and a visual short-term store increased digit span , but only under conditions that the visual stimuli were simultaneously presented , and the report order was inverted .

一个充满视觉刺激的艺术丛聚空间，打著亮眼的CYMK色灯光，孔雀蓝、洋红、正黄色似乎是为拜访者辟开一条道路，引领著他们的方向。

An Art cluster under CMYK color lighting in Mitte brings the lively atmosphere into the urban life . Cyan , Magenta and Yellow lightings guide the visitors into the art world .

用IBM-XT微机控制产生各种取向的可移动正弦光栅作为视觉刺激，用金属微电极在猫皮层一侧17/18区边界附近进行胞外记录，神经信号由微机实时采集并进行数据处理；

Moving sinusoidal grating of various orientations controlled with a computer ( IBM-XT ) were used as visual stimuli . Responses of cells in the region of 17 / 18 border were recorded with tungsten microelectrodes , then fed into the computer and processed on line .

非常有效地阻止了分散轻和视觉刺激。

Very effective in blocking out distracting light and visual stimuli .

他们测试了孩子们对单纯视觉刺激的反应。

They test the children 's reaction to a simple visual stimulus .

不同视觉刺激模式对视觉诱发电位的影响

Effects of different visual stimulation patterns on visual evoked potentials

结论：情绪信息的视觉刺激对人类认知过程有影响。

CONCLUSION : Visual emotional stimulus can influence cognitive pro-cessing in human .

功能磁共振成像对旋转光栅视觉刺激的研究

A fMRI study of the influence of revolving grating on visual stimulus

提前视觉刺激及高浓度氧对小鼠屈光状态的影响

The effects of premature visual exposure and hyperoxia on the refraction of mice

它们凭借视觉刺激，可能开始逆风飞行，表现出正趋风性。

They may start moving upwind using optomotor stimulation and show positive anemotaxis .