期刊
NEUROPSYCHOLOGY REVIEW
卷 30, 期 2, 页码 224-233出版社
SPRINGER
DOI: 10.1007/s11065-020-09439-3
关键词
Epilepsy; Split-brain; Lateralization; Visual perception; Consciousness agents
资金
- Advanced Investigator Grant by the European Research Council (ERC grant FAB4V) [339374]
- Templeton grant [61382]
Recently, the discussion regarding the consequences of cutting the corpus callosum (split-brain) has regained momentum (Corballis, Corballis, Berlucchi, & Marzi, Brain, 141(6), e46, 2018; Pinto et al., Brain, 140(5), 1231-1237, 2017a; Pinto, Lamme, & de Haan, Brain, 140(11), e68, 2017; Volz & Gazzaniga, Brain, 140(7), 2051-2060, 2017; Volz, Hillyard, Miller, & Gazzaniga, Brain, 141(3), e15, 2018). This collective review paper aims to summarize the empirical common ground, to delineate the different interpretations, and to identify the remaining questions. In short, callosotomy leads to a broad breakdown of functional integration ranging from perception to attention. However, the breakdown is not absolute as several processes, such as action control, seem to remain unified. Disagreement exists about the responsible mechanisms for this remaining unity. The main issue concerns the first-person perspective of a split-brain patient. Does a split-brain harbor a split consciousness or is consciousness unified? The current consensus is that the body of evidence is insufficient to answer this question, and different suggestions are made with respect to how future studies might address this paucity. In addition, it is suggested that the answers might not be a simple yes or no but that intermediate conceptualizations need to be considered.
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