Abstract：
:Traditional explanations of multistable visual phenomena (e.g. ambiguous figures, perceptual rivalry) suggest that the basis for spontaneous reversals in perception lies in antagonistic connectivity within the visual system. In this review, we suggest an alternative, albeit speculative, explanation for visual multistability - that spontaneous alternations reflect responses to active, programmed events initiated by brain areas that integrate sensory and non-sensory information to coordinate a diversity of behaviors. Much evidence suggests that perceptual reversals are themselves more closely related to the expression of a behavior than to passive sensory responses: (1) they are initiated spontaneously, often voluntarily, and are influenced by subjective variables such as attention and mood; (2) the alternation process is greatly facilitated with practice and compromised by lesions in non-visual cortical areas; (3) the alternation process has temporal dynamics similar to those of spontaneously initiated behaviors; (4) functional imaging reveals that brain areas associated with a variety of cognitive behaviors are specifically activated when vision becomes unstable. In this scheme, reorganizations of activity throughout the visual cortex, concurrent with perceptual reversals, are initiated by higher, largely non-sensory brain centers. Such direct intervention in the processing of the sensory input by brain structures associated with planning and motor programming might serve an important role in perceptual organization, particularly in aspects related to selective attention.
journal_name
Trends Cogn Scijournal_title
Trends in cognitive sciencesauthors
Leopold DA,Logothetis NKdoi
10.1016/s1364-6613(99)01332-7subject
Has Abstractpub_date
1999-07-01 00:00:00pages
254-264issue
7eissn
1364-6613issn
1879-307Xpii
S1364-6613(99)01332-7journal_volume
3pub_type
杂志文章abstract：:How much can we perceive and remember at a time? Results from various paradigms traditionally show that observers are aware of surprisingly little of the world around them. However, a recent study by Wu and Wolfe (Curr. Biol. 2018;28:3430-3434) uses a novel technique to reveal that observers have more knowledge of the...
journal_title：Trends in cognitive sciences
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journal_title：Trends in cognitive sciences
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journal_title：Trends in cognitive sciences
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journal_title：Trends in cognitive sciences
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journal_title：Trends in cognitive sciences
pub_type： 评论,杂志文章
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pub_type： 杂志文章,评审
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pub_type： 杂志文章,评审
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journal_title：Trends in cognitive sciences
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doi：10.1016/s1364-6613(00)01682-x
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journal_title：Trends in cognitive sciences
pub_type： 杂志文章
doi：10.1016/j.tics.2004.07.002
更新日期：2004-09-01 00:00:00
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pub_type： 杂志文章
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journal_title：Trends in cognitive sciences
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journal_title：Trends in cognitive sciences
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journal_title：Trends in cognitive sciences
pub_type： 杂志文章,评审
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