無(wú)空間線索化下視覺(jué)注意空間等級(jí)的ERP研究
發(fā)布時(shí)間:2018-07-15 18:01
【摘要】:采用事件相關(guān)電位(Event-Related Potential,ERP)技術(shù)考察了無(wú)空間線索化下視覺(jué)注意資源在不同空間等級(jí)的分布情況。通過(guò)"預(yù)警信號(hào)-目標(biāo)探測(cè)"范式,目標(biāo)刺激隨機(jī)出現(xiàn)在直徑視角為3.2°、6.4°以及9.6°的三個(gè)等級(jí)圓上。反應(yīng)時(shí)顯示:對(duì)目標(biāo)刺激的探測(cè)速度隨注意范圍增大而下降。腦電顯示:三種條件下目標(biāo)刺激誘發(fā)的N1和P3分別產(chǎn)生了不同程度的分離,主要表現(xiàn)為兩成分的波幅隨注意范圍增大而減小。這表明個(gè)體在無(wú)空間線索化下可能自動(dòng)地選擇對(duì)不同空間等級(jí)進(jìn)行資源分配。
[Abstract]:Event-Related potential (ERP) was used to investigate the distribution of visual attention resources in different spatial levels without spatial cues. Through the "early warning signal-target detection" paradigm, the target stimulus appears randomly on three circles with a diameter angle of 3.2 擄, 6.4 擄and 9.6 擄. The response time showed that the detection speed of target stimulation decreased with the increase of attention range. EEG showed that N _ 1 and P _ 3 induced by target stimulation were separated in different degrees under the three conditions, mainly that the amplitude of the two components decreased with the increase of attention range. This indicates that individuals may automatically choose to allocate resources to different spatial levels without spatial cues.
【作者單位】: 上海師范大學(xué)教育學(xué)院;河南大學(xué)教育科學(xué)學(xué)院;西南大學(xué)心理學(xué)部;
【基金】:國(guó)家自然科學(xué)基金項(xiàng)目(31200768) 上海市教育委員會(huì)科研創(chuàng)新項(xiàng)目(15ZS041)的資助
【分類號(hào)】:B842.3
[Abstract]:Event-Related potential (ERP) was used to investigate the distribution of visual attention resources in different spatial levels without spatial cues. Through the "early warning signal-target detection" paradigm, the target stimulus appears randomly on three circles with a diameter angle of 3.2 擄, 6.4 擄and 9.6 擄. The response time showed that the detection speed of target stimulation decreased with the increase of attention range. EEG showed that N _ 1 and P _ 3 induced by target stimulation were separated in different degrees under the three conditions, mainly that the amplitude of the two components decreased with the increase of attention range. This indicates that individuals may automatically choose to allocate resources to different spatial levels without spatial cues.
【作者單位】: 上海師范大學(xué)教育學(xué)院;河南大學(xué)教育科學(xué)學(xué)院;西南大學(xué)心理學(xué)部;
【基金】:國(guó)家自然科學(xué)基金項(xiàng)目(31200768) 上海市教育委員會(huì)科研創(chuàng)新項(xiàng)目(15ZS041)的資助
【分類號(hào)】:B842.3
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【共引文獻(xiàn)】
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