The role of the magnocellular and parvocellular pathways in the attentional blink

详细信息    查看全文

• 作者：S ; er Nieuwenhuis ; Marieke Jepma ; Sabrina La Fors ; Christian N.L. Olivers
• 关键词：Attentional blink ; Magnocellular ; Parvocellular ; Temporal attention ; Neural basis ; Red background ; Equiluminant ; Adaptation ; Resolution ; RSVP
• 刊名：Brain and Cognition
• 出版年：2008
• 出版时间：October 2008
• 年：2008
• 卷：68
• 期：1
• 页码：42-48
• 全文大小：176 K

文摘

The attentional blink refers to the transient impairment in perceiving the 2nd of two targets presented in close temporal proximity in a rapid serial visual presentation (RSVP) stream. The purpose of this study was to examine the effect on human attentional-blink performance of disrupting the function of the magnocellular pathway—a major visual-processing pathway specialized in temporal segregation. The study was motivated by recent theories that relate the attentional blink to the limited temporal resolution of attentional responses, and by a number of poorly understood empirical findings, including the effects on the attentional blink of luminance adaptation and distraction. The attentional blink was assessed for stimuli on a red background (Experiment 1), stimuli on an equiluminant background (Experiment 2), and following flicker or motion adaptation (Experiment 3), three psychophysical manipulations known to disrupt magnocellular function. Contrary to our expectations, the attentional blink was not affected by these manipulations, suggesting no specific relationship between the attentional blink and magnocellular and/or parvocellular processing.