Neural processing of visual information under interocular suppression: A critical review

Frontiers in Psychology

Volumn 5, Issue MAY, 2014, Pages

  Sterzer, Philipp ^a   Stein, Timo ^b   Ludwig, Karin ^a,c   Rothkirch, Marcus ^a   Hesselmann, Guido ^a  

^a CHARITÉ UNIVERSITÄTSMEDIZIN BERLIN   (Germany)

^b UNIVERSITY OF TRENTO   (Italy)

^c HUMBOLDT UNIVERSITY   (Germany)

Author keywords

Binocular rivalry; Consciousness; Interocular suppression; Neuroimaging; Visual perception

Indexed keywords

EID: 84904473329     PISSN: None     EISSN: 16641078     Source Type: Journal    
DOI: 10.3389/fpsyg.2014.00453     Document Type: Review

References (125)

1. Alais, D., and Parker, A. (2006). Independent binocular rivalry processes for form and motion. Neuron 52, 911-920. doi: 10.1016/j.neuron.2006.10.027
2. Almeida, J., Mahon, B. Z., Nakayama, K., and Caramazza, A. (2008). Unconscious processing dissociates along categorical lines. Proc. Natl. Acad. Sci. U.S.A. 105, 15214-15218. doi: 10.1073/pnas.0805867105
3. Almeida, J., Pajtas, P. E., Mahon, B. Z., Nakayama, K., and Caramazza, A. (2013). Affect of the unconscious: visually suppressed angry faces modulate our decisions. Cogn. Affect. Behav. Neurosci. 13, 94-101. doi: 10.3758/s13415-012-0133-7
4. Anderson, E., Siegel, E., White, D., and Barrett, L. F. (2012). Out of sight but not out of mind: unseen affective faces influence evaluations and social impressions. Emotion 12, 1210. doi: 10.1037/a0027514
5. Andrews, T. J., and Blakemore, C. (1999). Form and motion have independent access to consiousness. Nat. Neurosci. 2, 405-406. doi: 10.1038/8068
6. Aru, J., Bachmann, T., Singer, W., and Melloni, L. (2012). Distilling the neural correlates of consciousness. Neurosci. Biobehav. Rev. 36, 737-746. doi: 10.1016/j.neubiorev.2011.12.003
7. Avidan, G., Harel, M., Hendler, T., Ben-Bashat, D., Zohary, E., and Malach, R. (2002). Contrast sensitivity in human visual areas and its relationship to object recognition. J. Neurophysiol. 87, 3102-3116.
8. Bahrami, B., Lavie, N., and Rees, G. (2007). Attentional load modulates responses of human primary visual cortex to invisible stimuli. Curr. Biol. 17, 509-513. doi: 10.1016/j.cub.2007.01.070
9. Berger, R. L., and Hsu, J. C. (1996). Bioequivalence trials, intersection-union tests and equivalence confidence sets. Stat. Sci. 11, 283-319. doi: 10.1214/ss/1032280304
10. Bjorkman, M., Juslin, P., and Winman, A. (1993). Realism of confidence in sensory discrimination: the underconfidence phenomenon. Percept. Psychophys. 54, 75-81. doi: 10.3758/BF03206939
11. Blake, R., and Logothetis, N. K. (2002). Visual competition. Nat. Rev. Neurosci. 3, 13-21. doi: 10.1038/nrn701
12. Chen, Y. C., and Yeh, S. L. (2012). Look into my eyes and I will see you: unconscious processing of human gaze. Conscious. Cogn. 21, 1703-1710. doi: 10.1016/j.concog.2012.10.001
13. Cohen, M. A., Cavanagh, P., Chun, M. M., and Nakayama, K. (2012). The attentional requirements of consciousness. Trends Cogn. Sci. 16, 411-417. doi: 10.1016/j.tics.2012.06.013
14. de Graaf, T. A., Hsieh, P. J., and Sack, A. T. (2012). The 'correlates' in neural correlates of consciousness. Neurosci. Biobehav. Rev. 36, 191-197. doi: 10.1016/j.neubiorev.2011.05.012
15. Dehaene, S., and Naccache, L. (2001). Towards a cognitive neuroscience of consciousness: basic evidence and a workspace framework. Cognition 79, 1-37. doi: 10.1016/S0010-0277(00)00123-2
16. Dienes, Z. (2011). Bayesian versus orthodox statistics: which side are you on? Perspect. Psychol. Sci. 6, 274-290. doi: 10.1177/1745691611406920
17. Dienes, Z. (in press). "How Bayesian statistics are needed to determine whether mental states are unconscious," in Behavioral Methods in Consciousness Research, ed. M. Overgaard (Oxford: Oxford University Press).
18. Dienes, Z., Altmann, G., Kwan, L., and Goode, A. (1995). Unconscious knowledge of artificial grammars is applied strategically. J. Exp. Psychol. Learn. Mem. Cogn. 21, 1322-1338. doi: 10.1037/0278-7393.21.5.1322
19. Dienes, Z., and Seth, A. (2010). Gambling on the unconscious: a comparison of wagering and confidence ratings as measures of awareness in an artificial grammar task. Conscious. Cogn. 19, 674-681. doi: 10.1016/j.concog.2009.09.009
20. Eriksen, C. W. (1960). Discrimination and learning without awareness: a methodological survey and evaluation. Psychol. Rev. 67, 279-300. doi: 10.1037/h0041622
21. Fahle, M. W., Stemmler, T., and Spang, K. M. (2011). How much of the "unconscious" is just pre-threshold? Front. Hum. Neurosci. 5:120. doi: 10.3389/fnhum.2011.00120
22. Faivre, N., Berthet, V., and Kouider, S. (2012). Nonconscious influences from emotional faces: a comparison of visual crowding, masking, and continuous flash suppression. Front. Psychol. 3:129. doi: 10.3389/fpsyg.2012.00129
23. Fang, F., and He, S. (2005). Cortical responses to invisible objects in the human dorsal and ventral pathways. Nat. Neurosci. 8, 1380-1385. doi: 10.1038/nn1537
24. Faul, F., Erdfelder, E., Lang, A. G., and Buchner, A. (2007). G*Power 3: a flexible statistical power analysis program for the social, behavioral, and biomedical sciences. Behav. Res. Methods 39, 175-191. doi: 10.3758/BF03193146
25. Fleming, S. M., and Dolan, R. J. (2010). Effects of loss aversion on post-decision wagering: implications for measures of awareness. Conscious. Cogn. 19, 352-363. doi: 10.1016/j.concog.2009.11.002
26. Frassle, S., Sommer, J., Jansen, A., Naber, M., and Einhauser, W. (2014). Binocular rivalry: frontal activity relates to introspection and action but not to perception. J. Neurosci. 34, 1738-1747. doi: 10.1523/JNEUROSCI.4403-13.2014
27. Gandhi, S. P., Heeger, D. J., and Boynton, G. M. (1999). Spatial attention affects brain activity in human primary visual cortex. Proc. Natl. Acad. Sci. U.S.A. 96, 3314-3319. doi: 10.1073/pnas.96.6.3314
28. Green, D. M., and Swets, J. A. (1966). Signal Detection Theory and Psychophysics. New York: Wiley.
29. Greenwald, A. G., Draine, S. C., and Abrams, R. L. (1996). Three cognitive markers of unconscious semantic activation. Science 273, 1699-1702. doi: 10.1126/science.273.5282.1699
30. Haxby, J. V., Hoffman, E. A., and Gobbini, M. I. (2000). The distributed human neural system for face perception. Trends Cogn. Sci. 4, 223-233. doi: 10.1016/S1364-6613(00)01482-0
31. Haynes, J. D., Deichmann, R., and Rees, G. (2005). Eye-specific effects of binocular rivalry in the human lateral geniculate nucleus. Nature 438, 496-499. doi: 10.1038/nature04169
32. Haynes, J. D., and Rees, G. (2006). Decoding mental states from brain activity in humans. Nat. Rev. Neurosci. 7, 523-534. doi: 10.1038/nrn1931
33. Hesselmann, G., Hebart, M., and Malach, R. (2011). Differential BOLD activity associated with subjective and objective reports during "blindsight" in normal observers. J. Neurosci. 31, 12936-12944. doi: 10.1523/JNEUROSCI.1556-11.2011
34. Hesselmann, G., and Malach, R. (2011). The link between fMRI-BOLD activation and perceptual awareness is "stream-invariant" in the human visual system. Cereb. Cortex 21, 2829-2837. doi: 10.1093/cercor/bhr085
35. Holender, D. (1986). Semantic activation without conscious identification in dichotic listening, parafoveal vision, and visual masking: a survey and appraisal. Behav. Brain Sci. 9, 1-23. doi: 10.1017/S0140525X00021269
36. Hong, S. W., and Blake, R. (2009). Interocular suppression differentially affects achromatic and chromatic mechanisms. Attent. Percept. Psychophys. 71, 403-411. doi: 10.3758/APP.71.2.403
37. Jiang, Y., Costello, P., Fang, F., Huang, M., and He, S. (2006). A gender- and sexual orientation-dependent spatial attentional effect of invisible images. Proc. Natl. Acad. Sci. U.S.A. 103, 17048-17052. doi: 10.1073/pnas.0605678103
38. Jiang, Y., Costello, P., and He, S. (2007). Processing of invisible stimuli: advantage of upright faces and recognizable words in overcoming interocular suppression. Psychol. Sci. 18, 349-355. doi: 10.1111/j.1467-9280.2007.01902.x
39. Jiang, Y., and He, S. (2006). Cortical responses to invisible faces: dissociating subsystems for facial-information processing. Curr. Biol. 16, 2023-2029. doi: 10.1016/j.cub.2006.08.084
40. Jiang, Y., Shannon, R. W., Vizueta, N., Bernat, E. M., Patrick, C. J., and He, S. (2009). Dynamics of processing invisible faces in the brain: automatic neural encoding of facial expression information. Neuroimage 44, 1171-1177. doi: 10.1016/j.neuroimage.2008.09.038
41. Kanai, R., Walsh, V., and Tseng, C. H. (2010). Subjective discriminability of invisibility: a framework for distinguishing perceptual and attentional failures of awareness. Conscious. Cogn. 19, 1045-1057. doi: 10.1016/j.concog.2010.06.003
42. Kang, M. S., Blake, R., and Woodman, G. F. (2011). Semantic analysis does not occur in the absence of awareness induced by interocular suppression. J. Neurosci. 31, 13535-13545. doi: 10.1523/JNEUROSCI.1691-11.2011
43. Kastner, S., Pinsk, M. A., De Weerd, P., Desimone, R., and Ungerleider, L. G. (1999). Increased activity in human visual cortex during directed attention in the absence of visual stimulation. Neuron 22, 751-761. doi: 10.1016/S0896-6273(00)80734-5
44. Keliris, G. A., Logothetis, N. K., and Tolias, A. S. (2010). The role of the primary visual cortex in perceptual suppression of salient visual stimuli. J. Neurosci. 30, 12353-12365. doi: 10.1523/JNEUROSCI.0677-10.2010
45. Koch, C., and Tsuchiya, N. (2007). Attention and consciousness: two distinct brain processes. Trends Cogn. Sci. 11, 16-22. doi: 10.1016/j.tics.2006.10.012
46. Kouider, S., and Dehaene, S. (2007). Levels of processing during non-conscious perception: a critical review of visual masking. Philos. Trans. R. Soc. Lond. B 362, 857-875. doi: 10.1098/rstb.2007.2093
47. Kovacs, I., Papathomas, T. V., Yang, M., and Feher, A. (1996). When the brain changes its mind: interocular grouping during binocular rivalry. Proc. Natl. Acad. Sci. U.S.A. 93, 15508-15511. doi: 10.1073/pnas.93.26.15508
48. Kunimoto, C., Miller, J., and Pashler, H. (2001). Confidence and accuracy of near-threshold discrimination responses. Conscious. Cogn. 10, 294-340. doi: 10.1006/ccog.2000.0494
49. Lamme, V. A. (2003). Why visual attention and awareness are different. Trends Cogn. Sci. 7, 12-18. doi: 10.1016/S1364-6613(02)00013-X
50. Lau, H. C., and Passingham, R. E. (2006). Relative blindsight in normal observers and the neural correlate of visual consciousness. Proc. Natl. Acad. Sci. U.S.A. 103, 18763-18768. doi: 10.1073/pnas.0607716103
51. LeDoux, J. E. (2000). Emotion circuits in the brain. Annu. Rev. Neurosci. 23, 155-184. doi: 10.1146/annurev.neuro.23.1.155
52. Lee, S. H., Blake, R., and Heeger, D. J. (2005). Traveling waves of activity in primary visual cortex during binocular rivalry. Nat. Neurosci. 8, 22-23. doi: 10.1038/nn1365
53. Leopold, D. A., and Logothetis, N. K. (1996). Activity changes in early visual cortex reflect monkeys' percepts during binocular rivalry. Nature 379, 549-553. doi: 10.1038/379549a0
54. Lerner, Y., Hendler, T., and Malach, R. (2002). Object-completion effects in the human lateral occipital complex. Cereb. Cortex 12, 163-177. doi: 10.1093/cercor/12.2.163
55. Logothetis, N. K., Leopold, D. A., and Sheinberg, D. L. (1996). What is rivalling during binocular rivalry? Nature 380, 621-624. doi: 10.1038/380621a0
56. Ludwig, K., Sterzer, P., Kathmann, N., Franz, V., and Hesselmann, G. (2013). Learning to detect but not to grasp suppressed visual stimuli. Neuropsychologia 51, 2930-2938. doi: 10.1016/j.neuropsychologia.2013.09.035
57. Macmillan, N. A., and Creelman, C. D. (1991). Detection Theory: A User's Guide. Cambridge: Cambridge University Press.
58. Maier, A., Wilke, M., Aura, C., Zhu, C., Ye, F. Q., and Leopold, D. A. (2008). Divergence of fMRI and neural signals in V1 during perceptual suppression in the awake monkey. Nat. Neurosci. 11, 1193-1200. doi: 10.1038/nn.2173
59. Malach, R. (2008). The measurement problem in consciousness research. Behav. Brain Sci. 30, 516-517.
60. Martinez, A., Anllo-Vento, L., Sereno, M. I., Frank, L. R., Buxton, R. B., Dubowitz, D. J., et al. (1999). Involvement of striate and extrastriate visual cortical areas in spatial attention. Nat. Neurosci. 2, 364-369. doi: 10.1038/7274
61. Meeres, S. L., and Graves, R. E. (1990). Localization of unseen visual stimuli by humans with normal vision. Neuropsychologia 28, 1231-1237. doi: 10.1016/0028-3932(90)90039-Q
62. Merikle, P. M., and Daneman, M. (2000). "Conscious vs. unconscious perception," in The new Cognitive Neurosciences, 2nd Edn, ed. M. S. Gazzaniga (Cambridge, MA: MIT Press), 1295-1303.
63. Merikle, P. M., and Reingold, E. M. (1998). On demonstrating unconscious perception: comment on Draine and Greenwald. J. Exp. Psychol. Gen. 127, 304-310. doi: 10.1037/0096-3445.127.3.304
64. Milner, A. D., and Goodale, M. A. (1995). The Visual Brain in Action. Oxford: Oxford University press.
65. Milner, A. D., and Goodale, M. A. (2006). The Visual Brain in Action. Oxford: Oxford University press. doi: 10.1093/acprof:oso/9780198524724.001.0001
66. Moradi, F., Koch, C., and Shimojo, S. (2005). Face adaptation depends on seeing the face. Neuron 45, 169-175. doi: 10.1016/j.neuron.2004.12.018
67. Naber, M., Frässle, S., and Einhäuser, W. (2011). Perceptual rivalry: reflexes reveal the gradual nature of visual awareness. PLoS ONE 6:e20910. doi: 10.1371/journal.pone.0020910
68. Norman, K. A., Polyn, S. M., Detre, G. J., and Haxby, J. V. (2006). Beyond mind-reading: multi-voxel pattern analysis of fMRI data. Trends Cogn. Sci. 10, 424-430. doi: 10.1016/j.tics.2006.07.005
69. Overgaard, M. (2006). Introspection in science. Conscious. Cogn. 15, 629-633. doi: 10.1016/j.concog.2006.10.004
70. Overgaard, M., Lindelov, J., Svejstrup, S., Dossing, M., Hvid, T., Kauffmann, O., et al. (2013). Is conscious stimulus identification dependent on knowledge of the perceptual modality? Testing the "source misidentification hypothesis." Front. Psychol. 4:116. doi: 10.3389/fpsyg.2013.00116
71. Pasley, B. N., Mayes, L. C., and Schultz, R. T. (2004). Subcortical discrimination of unperceived objects during binocular rivalry. Neuron 42, 163-172. doi: 10.1016/S0896-6273(04)00155-2
72. Persaud, N., Mcleod, P., and Cowey, A. (2007). Post-decision wagering objectively measures awareness. Nat. Neurosci. 10, 257-261. doi: 10.1038/nn1840
73. Pessoa, L. (2005). To what extent are emotional visual stimuli processed without attention and awareness? Curr. Opin. Neurobiol. 15, 188-196. doi: 10.1016/j.conb.2005.03.002
74. Pessoa, L., and Adolphs, R. (2010). Emotion processing and the amygdala: from a 'low road' to 'many roads' of evaluating biological significance. Nat. Rev. Neurosci. 11, 773-783. doi: 10.1038/nrn2920
75. Polonsky, A., Blake, R., Braun, J., and Heeger, D. J. (2000). Neuronal activity in human primary visual cortex correlates with perception during binocular rivalry. Nat. Neurosci. 3, 1153-1159. doi: 10.1038/80676
76. Ramsoy, T. Z., and Overgaard, M. (2004). Introspection and subliminal perception. Phenomenol. Cogn. Sci. 3, 1-23. doi: 10.1023/B:PHEN.0000041900.30172.e8
77. Rees, G. (2007). Neural correlates of the contents of visual awareness in humans. Philos. Trans. R. Soc. Lond. B Biol. Sci. 362, 877-886. doi: 10.1098/rstb.2007.2094
78. Reingold, E. M., and Merikle, P. M. (1990). On the inter-relatedness of theory and measurement in the study of unconscious processes. Mind Lang. 5, 9-28. doi: 10.1111/j.1468-0017.1990.tb00150.x
79. Roseboom, W., and Arnold, D. H. (2011). Learning to reach for 'invisible' visual input. Curr. Biol. 21, R493-R494. doi: 10.1016/j.cub.2011.05.036
80. Rothkirch, M., Stein, T., Sekutowicz, M., and Sterzer, P. (2012). A direct oculomotor correlate of unconscious visual processing. Curr. Biol. 22, R514-R515. doi: 10.1016/j.cub.2012.04.046
81. Rouder, J. N., Morey, R. D., Speckman, P. L., and Pratte, M. S. (2007). Detecting chance: a solution to the null sensitivity problem in subliminal priming. Psychon. Bull. Rev. 14, 597-605. doi: 10.3758/BF03196808
82. Sandberg, K., Timmermans, B., Overgaard, M., and Cleeremans, A. (2010). Measuring consciousness: is one measure better than the other? Conscious. Cogn. 19, 1069-1078. doi: 10.1016/j.concog.2009.12.013
83. Schmidt, T., and Vorberg, D. (2006). Criteria for unconscious cognition: three types of dissociation. Percept. Psychophys. 68, 489-504. doi: 10.3758/BF03193692
84. Schurger, A., and Sher, S. (2008). Awareness, loss aversion, and post-decision wagering. Trends Cogn. Sci. 12, 209-210. doi: 10.1016/j.tics.2008.02.012
85. Schwiedrzik, C. M., Singer, W., and Melloni, L. (2011). Subjective and objective learning effects dissociate in space and in time. Proc. Natl. Acad. Sci. U.S.A. 108, 4506-4511. doi: 10.1073/pnas.1009147108
86. Sergent, C., and Dehaene, S. (2004). Is consciousness a gradual phenomenon? Evidence for an all-or-none bifurcation during the attentional blink. Psychol. Sci. 15, 720-728. doi: 10.1111/j.0956-7976.2004.00748.x
87. Seth, A., Dienes, Z., Cleeremans, A., Overgaard, M., and Pessoa, L. (2008). Measuring consciousness: relating behavioral and neurophysiological approaches. Trends Cogn. Sci. 12, 314-321. doi: 10.1016/j.tics.2008.04.008
88. Shimaoka, D., and Kaneko, K. (2011). Dynamical systems modeling of continuous flash suppression. Vision Res. 51, 521-528. doi: 10.1016/j.visres.2011.01.009
89. Spering, M., and Carrasco, M. (2012). Similar effects of feature-based attention on motion perception and pursuit eye movements at different levels of awareness. J. Neurosci. 32, 7594-7601. doi: 10.1523/JNEUROSCI.0355-12.2012
90. Spering, M., Pomplun, M., and Carrasco, M. (2011). Tracking without perceiving: a dissociation between eye movements and motion perception. Psychol. Sci. 22, 216-225. doi: 10.1177/0956797610394659
91. Snodgrass, M. (2004). The dissociation paradigm and its discontents: how can unconscious perception or memory be inferred? Conscious. Cogn. 13, 107-116. doi: 10.1016/j.concog.2003.11.001
92. Stein, T., and Sterzer, P. (2014). Unconscious processing under interocular suppression: Getting the right measure. Front. Psychol. 5:387. doi: 10.3389/fpsyg.2014.00387
93. Stein, T., Hebart, M. N., and Sterzer, P. (2011a). Breaking continuous flash suppression: a new measure of unconscious processing during interocular suppression? Front. Hum. Neurosci. 5:167. doi: 10.3389/fnhum.2011.00167
94. Stein, T., Senju, A., Peelen, M. V., and Sterzer, P. (2011b). Eye contact facilitates awareness of faces during interocular suppression. Cognition 119, 307-311. doi: 10.1016/j.cognition.2011.01.008
95. Stein, T., Peelen, M. V., and Sterzer, P. (2012). Eye gaze adaptation under interocular suppression. J. Vis. 12, 1. doi: 10.1167/12.7.1
96. Stein, T., Seymour, K., Hebart, M. N., and Sterzer, P. (2014). Rapid fear detection relies on high spatial frequencies. Psychol. Sci. 25, 566-574. doi: 10.1177/0956797613512509
97. Stein, T., and Sterzer, P. (2011). High-level face shape adaptation depends on visual awareness: evidence from continuous flash suppression. J. Vis. 11, 5. doi: 10.1167/11.8.5
98. Sterzer, P., Haynes, J. D., and Rees, G. (2008). Fine-scale activity patterns in high-level visual areas encode the category of invisible objects. J. Vis. 8, 1-12. doi: 10.1167/8.15.10
99. Sterzer, P., Jalkanen, L., and Rees, G. (2009a). Electromagnetic responses to invisible face stimuli during binocular suppression. Neuroimage 46, 803-808. doi: 10.1016/j.neuroimage.2009.02.046
100. Sterzer, P., Kleinschmidt, A., and Rees, G. (2009b). The neural bases of multistable perception. Trends Cogn. Sci. 13, 310-318. doi: 10.1016/j.tics.2009.04.006
101. Stoerig, P. (2006). Blindsight, conscious vision, and the role of primary visual cortex. Prog. Brain Res. 155, 217-234. doi: 10.1016/S0079-6123(06)55012-5
102. Szczepanowski, R., and Pessoa, L. (2007). Fear perception: can objective and subjective awareness measures be dissociated? J. Vis. 7, 10. doi: 10.1167/7.4.10
103. Szczepanowski, R., Traczyk, J., Wierzchon, M., and Cleeremans, A. (2013). The perception of visual emotion: comparing different measures of awareness. Conscious. Cogn. 22, 212-220. doi: 10.1016/j.concog.2012.12.003
104. Tong, F., and Engel, S. A. (2001). Interocular rivalry revealed in the human cortical blind-spot representation. Nature 411, 195-199. doi: 10.1038/35075583
105. Tong, F., Meng, M., and Blake, R. (2006). Neural bases of binocular rivalry. Trends Cogn. Sci. 10, 502-511. doi: 10.1016/j.tics.2006.09.003
106. Tong, F., Nakayama, K., Vaughan, J. T., and Kanwisher, N. (1998). Binocular rivalry and visual awareness in human extrastriate cortex. Neuron 21, 753-759. doi: 10.1016/S0896-6273(00)80592-9
107. Troiani, V., Price, E. T., and Schultz, R. T. (2012). Unseen fearful faces promote amygdala guidance of attention. Soc. Cogn. Affect. Neurosci. 9, 133-1340. doi: 10.1093/scan/nss116
108. Troiani, V., and Schultz, R. T. (2013). Amygdala, pulvinar, and inferior parietal cortex contribute to early processing of faces without awareness. Front. Hum. Neurosci. 7:241. doi: 10.3389/fnhum.2013.00241
109. Tsuchiya, N., and Koch, C. (2005). Continuous flash suppression reduces negative afterimages. Nat. Neurosci. 8, 1096-1101. doi: 10.1038/nn1500
110. Tsuchiya, N., Koch, C., Gilroy, L. A., and Blake, R. (2006). Depth of interocular suppression associated with continuous flash suppression, flash suppression, and binocular rivalry. J. Vis. 6, 1068-1078. doi: 10.1167/w6.10.6
111. van Boxtel, J. J., Tsuchiya, N., and Koch, C. (2010). Opposing effects of attention and consciousness on afterimages. Proc. Natl. Acad. Sci. U.S.A. 107, 8883-8888. doi: 10.1073/pnas.0913292107
112. Vizueta, N., Patrick, C. J., Jiang, Y., Thomas, K. M., and He, S. (2012). Dispositional fear, negative affectivity, and neuroimaging response to visually suppressed emotional faces. Neuroimage 59, 761-771. doi: 10.1016/j.neuroimage.2011.w07.015
113. Vuilleumier, P. (2005). How brains beware: neural mechanisms of emotional attention. Trends Cogn. Sci. 9, 585-594. doi: 10.1016/j.tics.2005.10.011
114. Watanabe, M., Cheng, K., Murayama, Y., Ueno, K., Asamizuya, T., Tanaka, K., et al. (2011). Attention but not awareness modulates the BOLD signal in the human V1 during binocular suppression. Science 334, 829-831. doi: 10.1126/science.1203161
115. Wilke, M., Logothetis, N. K., and Leopold, D. A. (2006). Local field potential reflects perceptual suppression in monkey visual cortex. Proc. Natl. Acad. Sci. U.S.A. 103, 17507-17512. doi: 10.1073/pnas.0604673103
116. Willenbockel, V., Lepore, F., Nguyen, D. K., Bouthillier, A., and Gosselin, F. (2012). Spatial frequency tuning during the conscious and non-conscious perception of emotional facial expressions - an intracranial ERP study. Front. Psychol. 3:237. doi: 10.3389/fpsyg.2012.00237
117. Williams, M. A., Morris, A. P., Mcglone, F., Abbott, D. F., and Mattingley, J. B. (2004). Amygdala responses to fearful and happy facial expressions under conditions of binocular suppression. J. Neurosci. 24, 2898-2904. doi: 10.1523/JNEUROSCI.4977-03.2004
118. Wolfe, J. M. (1984). Reversing ocular dominance and suppression in a single flash. Vision Res. 24, 471-478. doi: 10.1016/0042-6989(84)90044-0
119. Wunderlich, K., Schneider, K. A., and Kastner, S. (2005). Neural correlates of binocular rivalry in the human lateral geniculate nucleus. Nat. Neurosci. 8, 1595-1602. doi: 10.1038/nn1554
120. Xu, S., Zhang, S., and Geng, H. (2011). Gaze-induced joint attention persists under high perceptual load and does not depend on awareness. Vision Res. 51, 2048-2056. doi: 10.1016/j.visres.2011.07.023
121. Yamashiro, H., Yamamoto, H., Mano, H., Umeda, M., Higuchi, T., and Saiki, J. (2013). Activity in early visual areas predicts interindividual differences in binocular rivalry dynamics. J. Neurophysiol. 111, 1190-1202. doi: 10.1152/jn.00509.2013
122. Yang, E., and Blake, R. (2012). Deconstructing continuous flash suppression. J. Vis. 12, 8. doi: 10.1167/12.3.8
123. Yokoyama, T., Noguchi, Y., and Kita, S. (2013). Unconscious processing of direct gaze: evidence from an ERP study. Neuropsychologia 51, 1161-1168. doi: 10.1016/j.neuropsychologia.2013.04.002
124. Yuval-Greenberg, S., and Heeger, D. J. (2013). Continuous flash suppression modulates cortical activity in early visual cortex. J. Neurosci. 33, 9635-9643. doi: 10.1523/JNEUROSCI.4612-12.2013
125. Zadbood, A., Lee, S. H., and Blake, R. (2011). Stimulus fractionation by interocular suppression. Front. Hum. Neurosci. 5:135. doi: 10.3389/fnhum.2011.w00135