本文關(guān)鍵詞： 功能磁共振成像 數(shù)學(xué)歸納推理 交替運(yùn)動(dòng)協(xié)作 同步運(yùn)動(dòng)協(xié)作　出處：《電子科技大學(xué)》2011年碩士論文　論文類型：學(xué)位論文

【摘要】：認(rèn)知的研究在很長的一段時(shí)間內(nèi)都是基于純粹心理學(xué)的,隨著實(shí)驗(yàn)方法的進(jìn)步和影像技術(shù)的發(fā)展,我們已經(jīng)能獲得關(guān)于大腦結(jié)構(gòu)與功能的重要信息,從而對(duì)認(rèn)知現(xiàn)象錯(cuò)綜復(fù)雜的神經(jīng)生理機(jī)制有了更深的了解。本文就利用功能磁共振成像(functional Magnetic Resonance Image, fMRI)在數(shù)學(xué)歸納推理和雙手運(yùn)動(dòng)協(xié)作任務(wù)中的應(yīng)用,來探討各自腦認(rèn)知功能的潛在神經(jīng)機(jī)制。 數(shù)學(xué)歸納推理是重要的邏輯認(rèn)知過程,為了探究其神經(jīng)基礎(chǔ)及實(shí)驗(yàn)任務(wù)難度與認(rèn)知強(qiáng)度間的關(guān)系,我們?cè)O(shè)計(jì)了包含簡單數(shù)學(xué)歸納推理、復(fù)雜數(shù)學(xué)歸納推理的任務(wù)組實(shí)驗(yàn)和數(shù)學(xué)計(jì)算的對(duì)照組實(shí)驗(yàn),并對(duì)被試進(jìn)行了fMRI數(shù)據(jù)的采集。成像結(jié)果表明簡單數(shù)學(xué)歸納推理主要激活左側(cè)角回,復(fù)雜數(shù)學(xué)歸納推理主要激活左側(cè)額葉上回和雙側(cè)的角回。此外簡單推理中左側(cè)角回的激活強(qiáng)度與任務(wù)的難度系數(shù)有正相關(guān)性,復(fù)雜推理中左側(cè)額上回的激活強(qiáng)度與任務(wù)的難度系數(shù)有正相關(guān)性。這些結(jié)果表明角回和額葉上回在不同難度的數(shù)學(xué)歸納推理任務(wù)中有著重要的作用:簡單推理中的任務(wù)難度主要調(diào)節(jié)左側(cè)角回所主管的認(rèn)知成分,復(fù)雜推理中的任務(wù)難度主要調(diào)節(jié)額上回所主管的認(rèn)知成分。 在雙手運(yùn)動(dòng)協(xié)作研究中,我們?cè)O(shè)計(jì)了包含交替運(yùn)動(dòng)協(xié)作和同步運(yùn)動(dòng)協(xié)作兩個(gè)條件的手指敲擊實(shí)驗(yàn),并對(duì)被試進(jìn)行了fMRI數(shù)據(jù)的采集。從腦功能激活和腦網(wǎng)絡(luò)兩個(gè)方面比較了兩種運(yùn)動(dòng)協(xié)作任務(wù)的神經(jīng)機(jī)制的異同,并分析了其產(chǎn)生的原因。根據(jù)結(jié)果我們有以下結(jié)論:兩種任務(wù)的認(rèn)知控制都需要額葉的計(jì)劃和顳葉的節(jié)律性調(diào)節(jié)及運(yùn)動(dòng)區(qū)的執(zhí)行來完成,但兩種任務(wù)具有不同的認(rèn)知控制機(jī)制。同步運(yùn)動(dòng)協(xié)作任務(wù)較交替協(xié)作任務(wù)需要更多的內(nèi)在的運(yùn)動(dòng)感覺、描述和提取,更多更強(qiáng)的雙手間信息交互,更多的實(shí)時(shí)的節(jié)律調(diào)節(jié)。也就是說,交替運(yùn)動(dòng)協(xié)作較同步運(yùn)動(dòng)協(xié)作簡單且只需要計(jì)劃好后執(zhí)行,而同步運(yùn)動(dòng)協(xié)作在計(jì)劃好后執(zhí)行時(shí),還需要更多的實(shí)時(shí)的調(diào)整。
[Abstract]:Cognitive research has been based on pure psychology for a long time, and with the development of experimental methods and imaging technology, we have been able to obtain important information about the structure and function of the brain. In this paper, the application of functional Magnetic Resonance image (fMRI) in inductive reasoning and in the task of working together in both hands and motion is presented. To explore the underlying neural mechanisms of cognitive function in their respective brains. Mathematical inductive reasoning is an important process of logical cognition. In order to explore the relationship between the neural basis and the difficulty of experimental tasks and the cognitive intensity, we have designed a simple mathematical inductive reasoning. The task group experiment of complex mathematical inductive reasoning and the control group experiment of mathematical calculation were carried out, and the fMRI data were collected. The imaging results showed that simple mathematical inductive reasoning mainly activated the left corner gyrus. Complex mathematical inductive reasoning mainly activates the left superior frontal gyrus and bilateral angular gyrus. In simple reasoning, there is a positive correlation between the activation intensity of the left corner gyrus and the task difficulty coefficient. The activation intensity of the left superior frontal gyrus is positively correlated with the task difficulty coefficient in complex reasoning. These results indicate that the angular gyrus and the superior frontal gyrus play an important role in the different difficulty of mathematical inductive reasoning: in simple reasoning. The task difficulty mainly regulates the cognitive components of the left corner gyrus supervisor, The task difficulty in complex reasoning mainly regulates the cognitive component of the superior frontal gyrus supervisor. In the research of two-hand motion cooperation, we designed the finger tapping experiment, which includes two conditions: alternating motion cooperation and synchronous motion cooperation. The fMRI data were collected, and the neural mechanisms of the two kinds of motor cooperative tasks were compared from the aspects of brain function activation and brain network. Based on the results, we have concluded that the cognitive control of the two tasks requires the planning of the frontal lobe, the rhythmic regulation of the temporal lobe, and the execution of the motor area. But the two tasks have different cognitive control mechanisms. Synchronous motion coordination tasks require more internal motion sensation, description and extraction, more and stronger information exchange between hands. In other words, alternating motion cooperation is simpler than synchronous motion collaboration and only needs to be executed after planning, while synchronous motion cooperation needs more real-time adjustment when it is executed after planning.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：R311

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