10月12日,，日本山口大學(xué)１２日發(fā)表公報稱，該校一個研究小組通過試驗證實(shí),，人腦存在處理二維圖案不規(guī)則性的機(jī)制,。該成果有望在人工智能等領(lǐng)域促進(jìn)圖像識別和圖像合成技術(shù)發(fā)展。
日本山口大學(xué)時間學(xué)研究所教授宮崎真,、助教山田佑樹和ＮＴＴ通信科學(xué)基礎(chǔ)研究所研究員河邊隆寬率領(lǐng)的研究小組,，招募了２０名成年志愿者進(jìn)行試驗。他們先讓受試者觀看由黑點(diǎn)組成的毫無規(guī)則的圖案Ａ,，５秒后再觀看同樣由黑點(diǎn)組成的凌亂程度稍弱的圖案Ｂ以及有規(guī)則的圖案Ｃ,。結(jié)果發(fā)現(xiàn)，受試者會覺得后兩者非常相像,。
研究小組指出,，出現(xiàn)這種情況是由于人腦適應(yīng)了圖案Ａ之后，對于圖案不規(guī)則性的看法發(fā)生改變,，即大腦內(nèi)對不規(guī)則圖案信息產(chǎn)生了“殘留效果”,，這表明大腦內(nèi)存在專門處理這類信息的機(jī)制。
相關(guān)論文已刊登在新一期英國學(xué)術(shù)雜志《科學(xué)報告》上,。(生物谷：Bioon.com)
生物谷推薦英文摘要：
Scientific Reports doi:10.1038/srep02906
Pattern randomness aftereffect
Yuki Yamada,Takahiro Kawabe & Makoto Miyazaki
Humans can easily discriminate a randomly spaced from a regularly spaced visual pattern. Here, we demonstrate that observers can adapt to pattern randomness. Following their adaption to prolonged exposure to two-dimensional patterns with varying levels of physical randomness, observers judged the randomness of the pattern. Perceived randomness decreased (increased) following adaptation to high (low) physical randomness (Experiment 1). Adaptation to 22.5°-rotated adaptor stimuli did not cause a randomness aftereffect (Experiment 2), suggesting that positional variation is unlikely to be responsible for the pattern randomness perception. Moreover, the aftereffect was not selective to contrast polarity (Experiment 3) and was not affected by spatial jitter (Experiment 4). Last, the aftereffect was not affected by adaptor configuration (Experiment 5). Our data were consistent with a model assuming filter-rectify-filter processing for orientation inputs. Thus, we infer that neural processing for orientation grouping/segregation underlies the perception of pattern randomness.
