【摘要】：人類無(wú)時(shí)無(wú)刻不在運(yùn)動(dòng),每一次運(yùn)動(dòng)都會(huì)消耗一定的時(shí)間。但是大腦在自主運(yùn)動(dòng)之前是否知道運(yùn)動(dòng)時(shí)間這一問(wèn)題一直未能被解答。不同的模型采用不同的假設(shè)。時(shí)間有限模型假設(shè),在自主運(yùn)動(dòng)之前,大腦已經(jīng)知道運(yùn)動(dòng)時(shí)間;時(shí)間無(wú)限模型假設(shè),大腦不知道運(yùn)動(dòng)時(shí)間,時(shí)間是在運(yùn)動(dòng)之后自然呈現(xiàn)出來(lái)的。盡管兩種相悖的模型都能在一定條件下擬合實(shí)驗(yàn)數(shù)據(jù),但是這一時(shí)間問(wèn)題卻懸而未決。時(shí)間問(wèn)題并沒(méi)有辦法直接回答。本研究才用了獨(dú)特的辦法,把時(shí)間問(wèn)題轉(zhuǎn)化成了空間問(wèn)題,即比較對(duì)外界干擾的修復(fù)形狀。本研究基于最優(yōu)控制框架,對(duì)以上兩種模型進(jìn)行了數(shù)學(xué)公式上的對(duì)比。時(shí)間有限模型的控制增益為時(shí)變?cè)鲆?時(shí)間無(wú)限模型的控制增益為時(shí)不變?cè)鲆�。不同的增益�?dǎo)致了,在遇到外界干擾時(shí),對(duì)運(yùn)動(dòng)的修復(fù)軌跡不同。本研究針對(duì)這一差別,設(shè)計(jì)了不同范式的實(shí)驗(yàn),進(jìn)行了Matlab仿真。并用相同的參數(shù)進(jìn)行了行為學(xué)實(shí)驗(yàn),通過(guò)行為學(xué)實(shí)驗(yàn)結(jié)果解釋這一科學(xué)問(wèn)題。實(shí)驗(yàn)結(jié)果否定了時(shí)間無(wú)限理論在自主運(yùn)動(dòng)中的適用性,但是并不能完全支持時(shí)間有限理論。其中差別可能來(lái)自于參數(shù)的選擇。
[Abstract]:Human beings exercise all the time, and each exercise consumes a certain amount of time. But the question of whether the brain knows when to exercise before it moves autonomously has not been answered. Different models adopt different assumptions. The time-limited model assumes that the brain already knows the movement time before the autonomous movement, and the time infinite model assumes that the brain does not know the movement time, and the time appears naturally after the exercise. Although the two contradictory models can fit the experimental data under certain conditions, the time problem is still unresolved. There is no direct answer to the question of time. In this study, a unique method was used to transform the time problem into a spatial problem, that is, to compare the repair shape of external interference. Based on the optimal control framework, the mathematical formulas of the two models are compared. The control gain of time-limited model is time-varying gain, and the control gain of time-infinite model is time-invariant gain. Different gain leads to different track of motion repair in the event of external interference. Aiming at this difference, experiments of different paradigms are designed, and Matlab simulation is carried out. The behavioral experiments were carried out with the same parameters, and the results of behavioral experiments were used to explain this scientific problem. The experimental results deny the applicability of time-infinite theory in autonomous motion, but can not fully support the time-limited theory. The difference may come from the choice of parameters.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TP391.9

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