On the bright side of blindsight. Considerations from new observations of awareness in a blindsight patient

被引:0
|
作者
de Gelder, Beatrice [1 ]
Humphrey, Nicholas [2 ]
Pegna, Alan J. [3 ]
机构
[1] Maastricht Univ, Dept Cognit Neurosci, Oxfordlaan 55, NL-6229 EV Maastricht, Netherlands
[2] Univ Cambridge Darwin Coll, Silver St, Cambridge CB3 9EU, England
[3] Univ Queensland, Sch Psychol, 24 Campbell Rd, St Lucia, Qld 4067, Australia
基金
欧洲研究理事会; 欧盟地平线“2020”;
关键词
cortical blindness; hemianopia; blindsight; residual vision; color processing; consciousness; VISUAL-PERCEPTION; EMOTIONAL FACES; RESPONSES; COLOR;
D O I
10.1093/cercor/bhae456
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Blindsight refers to the ability to make accurate visual discriminations without conscious awareness of the stimuli. In this study, we present new evidence from naturalistic observations of a patient with bilateral damage to the striate cortex, who surprisingly demonstrated the ability to detect colored objects, particularly red ones. Despite the slow and effortful process, the patient reported full awareness of the color aspect of the stimuli. These observations cannot be explained by traditional concepts of type 1 or type 2 blindsight, raising intriguing questions about the boundaries between objective and subjective blindness, as well as the nature of visual experience and epistemic agency. Moreover, these findings underscore the significant role that blindsight could play in future research, especially in understanding how higher cortical functions are involved in emotions and feelings. This highlights the necessity for further exploration to better understand the visual features that contribute to the phenomenon of affective blindsight.
引用
收藏
页码:42 / 48
页数:7
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