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Volumn 5, Issue 5, 2010, Pages

Neural competition for conscious representation across time: An fMRI study

Author keywords

[No Author keywords available]

Indexed keywords

ADULT; ARTICLE; ATTENTIONAL BLINK; BEHAVIORAL RESEARCH; BRAIN FUNCTION; BRAIN REGION; CONSCIOUSNESS; CONTROLLED STUDY; FEMALE; FUNCTIONAL MAGNETIC RESONANCE IMAGING; HUMAN; HUMAN EXPERIMENT; IMAGE ANALYSIS; MALE; NERVE STIMULATION; NORMAL HUMAN; OPTICAL RESOLUTION; PERCEPTIVE DISCRIMINATION; TASK PERFORMANCE; VISUAL SYSTEM FUNCTION; ADOLESCENT; BEHAVIOR; NERVOUS SYSTEM FUNCTION; NUCLEAR MAGNETIC RESONANCE IMAGING; PHYSIOLOGY; PILOT STUDY; PREFRONTAL CORTEX; TIME; VISION;

EID: 77956292888     PISSN: None     EISSN: 19326203     Source Type: Journal    
DOI: 10.1371/journal.pone.0010556     Document Type: Article
Times cited : (32)

References (59)
  • 1
    • 0028951934 scopus 로고    scopus 로고
    • Neural mechanisms of selective visual attention
    • Desimone R, Duncan J (2005) Neural mechanisms of selective visual attention. Annual Rev Neurosci1 8: 193-222.
    • (2005) Annual Rev Neurosci1 , vol.8 , pp. 193-222
    • Desimone, R.1    Duncan, J.2
  • 2
    • 0034333184 scopus 로고    scopus 로고
    • The distinct modes of vision offered by feedforward and recurrent processing
    • Lamme VA, Roelfsema PR (2000) The distinct modes of vision offered by feedforward and recurrent processing. Trends Neurosci 23(11): 571- 579.
    • (2000) Trends Neurosci , vol.23 , Issue.11 , pp. 571-579
    • Lamme, V.A.1    Roelfsema, P.R.2
  • 3
    • 0034928713 scopus 로고    scopus 로고
    • An integrative theory of prefrontal cortex function
    • Miller EK, Cohen JD (2001) An integrative theory of prefrontal cortex function. Annual Rev Neurosci 24: 167-202.
    • (2001) Annual Rev Neurosci , vol.24 , pp. 167-202
    • Miller, E.K.1    Cohen, J.D.2
  • 4
    • 0035929449 scopus 로고    scopus 로고
    • The neural basis of biased competition in human visual cortex
    • Kastner S, Underleider L (2001) The neural basis of biased competition in human visual cortex. Neuropsychologia 39(12): 1263-1276.
    • (2001) Neuropsychologia , vol.39 , Issue.12 , pp. 1263-1276
    • Kastner, S.1    Underleider, L.2
  • 5
    • 0026905669 scopus 로고
    • Temporary suppression of visual processing in an RSVP task: An attentional blink?
    • Raymond JE, Shapiro KL, Arnell KM (1992) Temporary suppression of visual processing in an RSVP task: An attentional blink? J Exp Psychol Hum Percept Perform 18: 849-860.
    • (1992) J Exp Psychol Hum Percept Perform , vol.18 , pp. 849-860
    • Raymond, J.E.1    Shapiro, K.L.2    Arnell, K.M.3
  • 6
    • 33846316000 scopus 로고    scopus 로고
    • The simultaneous type serial token model of temporal attention and working memory
    • Bowman H, Wyble B (2007) The simultaneous type serial token model of temporal attention and working memory. Psychol Rev 4(1): 38-70.
    • (2007) Psychol Rev , vol.4 , Issue.1 , pp. 38-70
    • Bowman, H.1    Wyble, B.2
  • 7
    • 0029248420 scopus 로고
    • A two-stage model for multiple target detection in rapid serial visual presentation
    • Chun MM, Potter MC (1995) A two-stage model for multiple target detection in rapid serial visual presentation. J Exp Psychol: Hum Percept Perform 21: 109-127.
    • (1995) J Exp Psychol: Hum Percept Perform , vol.21 , pp. 109-127
    • Chun, M.M.1    Potter, M.C.2
  • 8
    • 12144249893 scopus 로고    scopus 로고
    • The attentional blink: Resource depletion or temporary loss of control?
    • DiLollo V, Kawahara J, Ghorashi SMS, Enns JT (2005) The attentional blink: resource depletion or temporary loss of control? Psychol Res 69: 191-200.
    • (2005) Psychol Res , vol.69 , pp. 191-200
    • DiLollo, V.1    Kawahara, J.2    Ghorashi, S.M.S.3    Enns, J.T.4
  • 9
    • 0040610701 scopus 로고    scopus 로고
    • Concurrent response-selection demands modulate the attentional blink
    • Jolicoeur P (1999) Concurrent response-selection demands modulate the attentional blink. J Exp Psychol: Hum Percept Perform 25: 1097-1113.
    • (1999) J Exp Psychol: Hum Percept Perform , vol.25 , pp. 1097-1113
    • Jolicoeur, P.1
  • 10
    • 0028414251 scopus 로고
    • Attention to visual pattern information produces the attentional blink in rapid serial visual presentation
    • Shapiro KL, Raymond JE, Amell KM (1994) Attention to visual pattern information produces the attentional blink in rapid serial visual presentation. J Exp Psychol: Hum Percept Perform 20: 357-371.
    • (1994) J Exp Psychol: Hum Percept Perform , vol.20 , pp. 357-371
    • Shapiro, K.L.1    Raymond, J.E.2    Amell, K.M.3
  • 12
    • 0030546934 scopus 로고    scopus 로고
    • The slow time course of visual attention
    • Ward J, Duncan R, Shapiro R (1996) The slow time course of visual attention. Cognit Psychol 30: 79-109.
    • (1996) Cognit Psychol , vol.30 , pp. 79-109
    • Ward, J.1    Duncan, R.2    Shapiro, R.3
  • 14
    • 75549087353 scopus 로고    scopus 로고
    • The attentional blink: A review of data and theory
    • Dux PE, Marois R (2009) The attentional blink: a review of data and theory. Atten Percept Psychophys 71(8): 1683-1700.
    • (2009) Atten Percept Psychophys , vol.71 , Issue.8 , pp. 1683-1700
    • Dux, P.E.1    Marois, R.2
  • 15
    • 56149104653 scopus 로고    scopus 로고
    • A boost and bounce theory of temporal attention. 16
    • Olivers CN, Meeter M (2008) A boost and bounce theory of temporal attention. 16. Psychol Rev 115(4): 836-863.
    • (2008) Psychol Rev , vol.115 , Issue.4 , pp. 836-863
    • Olivers, C.N.1    Meeter, M.2
  • 17
    • 67650503467 scopus 로고    scopus 로고
    • Both exogenous and endogenous target salience manipulations support resource depletion accounts of the attentional blink: A reply to Olivers et al
    • Dux PE, Asplund CL, Marois R (2009) Both exogenous and endogenous target salience manipulations support resource depletion accounts of the attentional blink: A reply to Olivers et al. Psychon Bull Rev 16(1): 129-224.
    • (2009) Psychon Bull Rev , vol.16 , Issue.1 , pp. 129-224
    • Dux, P.E.1    Asplund, C.L.2    Marois, R.3
  • 19
    • 34250205986 scopus 로고    scopus 로고
    • Masking T1 difficulty: Processing time and the attentional blink
    • Visser TA (2007) Masking T1 difficulty: Processing time and the attentional blink. J Exp Psychol: Hum Percept Perform 33(2): 285-297.
    • (2007) J Exp Psychol: Hum Percept Perform , vol.33 , Issue.2 , pp. 285-297
    • Visser, T.A.1
  • 20
    • 34547843641 scopus 로고    scopus 로고
    • Temporal dynamics of access to consciousness in the attentional blink
    • Kranczioch C, Debener S, Maye A, Engel AK (2007) Temporal dynamics of access to consciousness in the attentional blink. Neuroimage 37: 947-955.
    • (2007) Neuroimage , vol.37 , pp. 947-955
    • Kranczioch, C.1    Debener, S.2    Maye, A.3    Engel, A.K.4
  • 21
    • 33751281761 scopus 로고    scopus 로고
    • Cuing and stimulus probability effects on the P3 and the AB
    • Martens S, Elmallah K, London R, Johnson A (2006a) Cuing and stimulus probability effects on the P3 and the AB. Acta Psychologica 123: 204-218.
    • (2006) Acta Psychologica , vol.123 , pp. 204-218
    • Martens, S.1    Elmallah, K.2    London, R.3    Johnson, A.4
  • 22
    • 33749438761 scopus 로고    scopus 로고
    • Quick minds don't blink: Electrophysiological correlates of individual differences in attentional selection
    • Martens S, Munneke J, Smid H, Johnson A (2006b) Quick minds don't blink: electrophysiological correlates of individual differences in attentional selection. J Cogn Neurosci 18: 1423-1438.
    • (2006) J Cogn Neurosci , vol.18 , pp. 1423-1438
    • Martens, S.1    Munneke, J.2    Smid, H.3    Johnson, A.4
  • 23
    • 27744458423 scopus 로고    scopus 로고
    • Timing of the brain events underlying access to consciousness during the attentional blink
    • Sergent C, Baillet S, Dehaene S (2005) Timing of the brain events underlying access to consciousness during the attentional blink. Nat Neurosci 8: 1391-1400.
    • (2005) Nat Neurosci , vol.8 , pp. 1391-1400
    • Sergent, C.1    Baillet, S.2    Dehaene, S.3
  • 24
    • 0020603037 scopus 로고
    • Performance of concurrent tasks: A psychophysiological analysis of the reciprocity of information-processing resources
    • Wickens C, Kramer A, Vanasse L, Donchin E (1983) Performance of concurrent tasks: a psychophysiological analysis of the reciprocity of information-processing resources. Science 221: 1080-1082.
    • (1983) Science , vol.221 , pp. 1080-1082
    • Wickens, C.1    Kramer, A.2    Vanasse, L.3    Donchin, E.4
  • 25
    • 34250359114 scopus 로고    scopus 로고
    • Mental training affects distribution of limited brain resources
    • doi:101371/journalpbio0050138
    • Slagter HA, Lutz A, Greisschar LL, Frances AD, Nieuwenhuis S, et al. (2007) Mental training affects distribution of limited brain resources. PloS Biology 5(6): e138. doi:101371/journalpbio0050138.
    • (2007) PloS Biology , vol.5 , Issue.6
    • Slagter, H.A.1    Lutz, A.2    Greisschar, L.L.3    Frances, A.D.4    Nieuwenhuis, S.5
  • 26
    • 67650450486 scopus 로고    scopus 로고
    • Theta phase synchrony and conscious target perception Impact of intensive mental training
    • Slagter HA, Lutz A, Greisschar LL, Nieuwenhuis S, Davidson RJ (2009) Theta phase synchrony and conscious target perception Impact of intensive mental training. J Cognit Neurosci 21(8): 1536-1549.
    • (2009) J Cognit Neurosci , vol.21 , Issue.8 , pp. 1536-1549
    • Slagter, H.A.1    Lutz, A.2    Greisschar, L.L.3    Nieuwenhuis, S.4    Davidson, R.J.5
  • 27
    • 63149146620 scopus 로고    scopus 로고
    • The attentional blink reveals serial working memory encoding: Evidence from virtual and human event-related potentials
    • (in press) In press
    • Craston P, Wyble B, Chennu S, Bowman H (in press) The attentional blink reveals serial working memory encoding: Evidence from virtual and human event-related potentials. Journal of Cognitive Neuroscience. In press.
    • Journal of Cognitive Neuroscience
    • Craston, P.1    Wyble, B.2    Chennu, S.3    Bowman, H.4
  • 28
    • 58149522604 scopus 로고    scopus 로고
    • The attentional blink modulates activity in the early visual cortex
    • Hein G, Alink A, Kleinschmidt A, Muller NG (2009) The attentional blink modulates activity in the early visual cortex. J Cogn Neuroscience 21(1): 197-206.
    • (2009) J Cogn Neuroscience , vol.21 , Issue.1 , pp. 197-206
    • Hein, G.1    Alink, A.2    Kleinschmidt, A.3    Muller, N.G.4
  • 29
  • 30
    • 0242494073 scopus 로고    scopus 로고
    • Neural correlates of dual task interference in rapid visual streams: An fMRI study
    • Marcantoni WS, Lepage M, Beaudoin G, Bourgouin P, Richer F (2003) Neural correlates of dual task interference in rapid visual streams: An fMRI study. Brain Cogn 53: 318-321.
    • (2003) Brain Cogn , vol.53 , pp. 318-321
    • Marcantoni, W.S.1    Lepage, M.2    Beaudoin, G.3    Bourgouin, P.4    Richer, F.5
  • 31
    • 1242316146 scopus 로고    scopus 로고
    • The Neural Fate of Consciously Perceived and Missed Events in the Attentional Blink
    • Marois R, Yi DJ, Chun MM (2004) The Neural Fate of Consciously Perceived and Missed Events in the Attentional Blink. Neuron 44: 465-472.
    • (2004) Neuron , vol.44 , pp. 465-472
    • Marois, R.1    Yi, D.J.2    Chun, M.M.3
  • 32
    • 52649153617 scopus 로고    scopus 로고
    • Primary visual cortex reflects behavioral performance in the attentional blink
    • Stein T, Vallines I, Schneider WX (2008) Primary visual cortex reflects behavioral performance in the attentional blink. Neuroreport 19(13): 1277-1281.
    • (2008) Neuroreport , vol.19 , Issue.13 , pp. 1277-1281
    • Stein, T.1    Vallines, I.2    Schneider, W.X.3
  • 34
    • 34548060322 scopus 로고    scopus 로고
    • Imaging the attentional blink: Perceptual versus attentional limitations
    • Johnston SJ, Shapiro KL, Vogels W, Roberts NJ (2007) Imaging the attentional blink: perceptual versus attentional limitations. Neuroreport 18(14): 1475-1478.
    • (2007) Neuroreport , vol.18 , Issue.14 , pp. 1475-1478
    • Johnston, S.J.1    Shapiro, K.L.2    Vogels, W.3    Roberts, N.J.4
  • 35
    • 34247641639 scopus 로고    scopus 로고
    • Increased functional magnetic resonance imaging activity during nonconscious perception in the attentional blink
    • Shapiro KL, Johnston SJ, Vogels W, Zaman A, Roberts N (2007) Increased functional magnetic resonance imaging activity during nonconscious perception in the attentional blink. NeuroReport 18: 341-345.
    • (2007) NeuroReport , vol.18 , pp. 341-345
    • Shapiro, K.L.1    Johnston, S.J.2    Vogels, W.3    Zaman, A.4    Roberts, N.5
  • 36
    • 55749112848 scopus 로고    scopus 로고
    • Attenuation of Neural Responses in Primary Visual Cortex during the Attentional Blink
    • Williams MA, Visser TAW, Cunnington R, Mattingley JB (2008) Attenuation of Neural Responses in Primary Visual Cortex during the Attentional Blink. J Neurosci 28(39): 9890-9894.
    • (2008) J Neurosci , vol.28 , Issue.39 , pp. 9890-9894
    • Williams, M.A.1    Visser, T.A.W.2    Cunnington, R.3    Mattingley, J.B.4
  • 37
    • 0030702009 scopus 로고    scopus 로고
    • Psychophysiological and modulatory interactions in neuroimaging
    • Friston KJ, Buchel C, Fink GR, Morris J, Rolls E, et al. (1997) Psychophysiological and modulatory interactions in neuroimaging. Neuroimage 6: 218-229.
    • (1997) Neuroimage , vol.6 , pp. 218-229
    • Friston, K.J.1    Buchel, C.2    Fink, G.R.3    Morris, J.4    Rolls, E.5
  • 38
    • 10044294171 scopus 로고    scopus 로고
    • Functional integration in the brain
    • In: Frackowiak RS, et al. eds. 2nd edn Academic Press, San Diego
    • Friston KJ (2004) Functional integration in the brain. In: Frackowiak RS, et al. eds. Human Brain Function 2nd edn Academic Press, San Diego. pp 971-997.
    • (2004) Human Brain Function , pp. 971-997
    • Friston, K.J.1
  • 40
    • 0032499196 scopus 로고    scopus 로고
    • A cortical representation of the local visual environment
    • Epstein R, Kanwisher N (1998) A cortical representation of the local visual environment. Nature 392: 598-601.
    • (1998) Nature , vol.392 , pp. 598-601
    • Epstein, R.1    Kanwisher, N.2
  • 41
    • 36048987348 scopus 로고    scopus 로고
    • Power calculation for group fMRI studies accounting for arbitrary design and temporal autocorrelation
    • Mumford JA, Nichols TE (2008) Power calculation for group fMRI studies accounting for arbitrary design and temporal autocorrelation. NeuroImage 39(1): 261-268.
    • (2008) NeuroImage , vol.39 , Issue.1 , pp. 261-268
    • Mumford, J.A.1    Nichols, T.E.2
  • 42
    • 0037200722 scopus 로고    scopus 로고
    • Estimating sample size in functional MRI (fMRI) neuroimaging studies: Statistical power analyses
    • Desmond JE, Glover GH (2002) Estimating sample size in functional MRI (fMRI) neuroimaging studies: statistical power analyses. Journal of neuroscience methods 118(2): 115-128.
    • (2002) Journal of neuroscience methods , vol.118 , Issue.2 , pp. 115-128
    • Desmond, J.E.1    Glover, G.H.2
  • 43
    • 33847026433 scopus 로고    scopus 로고
    • Analysis of a large fMRI cohort: Statistical and methodological issues for group analyses
    • Thirion B, Pinel P, Meriaux S, Roche A, Dehaene S, et al. (2007) Analysis of a large fMRI cohort: Statistical and methodological issues for group analyses. NeuroImage 35(1): 105-120.
    • (2007) NeuroImage , vol.35 , Issue.1 , pp. 105-120
    • Thirion, B.1    Pinel, P.2    Meriaux, S.3    Roche, A.4    Dehaene, S.5
  • 44
    • 0030175198 scopus 로고    scopus 로고
    • AFNI: Software for analysis and visualization of functional magnetic resonance neuroimages
    • Cox RW (1996) AFNI: software for analysis and visualization of functional magnetic resonance neuroimages. Comput Biomed Res 29: 162-173.
    • (1996) Comput Biomed Res , vol.29 , pp. 162-173
    • Cox, R.W.1
  • 45
    • 0033637207 scopus 로고    scopus 로고
    • Neural correlates of the attentional blink
    • Marois R, Chun MM, Gore JC (2000) Neural correlates of the attentional blink. Neuron 28: 299-308.
    • (2000) Neuron , vol.28 , pp. 299-308
    • Marois, R.1    Chun, M.M.2    Gore, J.C.3
  • 46
    • 33749487029 scopus 로고    scopus 로고
    • Motion correction and the use of motion covariates in multiple-subject fMRI analysis
    • Johnstone T, Ores Walsh KS, Greischar LL, Alexander AL, Fox AS, et al. (2006) Motion correction and the use of motion covariates in multiple-subject fMRI analysis. Human Brain Mapping 27(10): 779-788.
    • (2006) Human Brain Mapping , vol.27 , Issue.10 , pp. 779-788
    • Johnstone, T.1    Ores, W.K.S.2    Greischar, L.L.3    Alexander, A.L.4    Fox, A.S.5
  • 47
    • 0001677717 scopus 로고
    • Controlling the false discovery rate: A practical and powerful approach to multiple testing
    • Benjamini Y, Hochberg Y (1995) Controlling the false discovery rate: A practical and powerful approach to multiple testing. Journal of the Royal Statistical Society Series B 57(1): 289-300.
    • (1995) Journal of the Royal Statistical Society Series B , vol.57 , Issue.1 , pp. 289-300
    • Benjamini, Y.1    Hochberg, Y.2
  • 48
    • 0038777434 scopus 로고    scopus 로고
    • Modeling regional and psychophysiological interactions in fMRI: The importance of hemodynamic deconvolution
    • Gitelman DR, Penny WD, Ashburner J, Friston KJ (2003) Modeling regional and psychophysiological interactions in fMRI: The importance of hemodynamic deconvolution. Neuroimage 19(1): 200-207.
    • (2003) Neuroimage , vol.19 , Issue.1 , pp. 200-207
    • Gitelman, D.R.1    Penny, W.D.2    Ashburner, J.3    Friston, K.J.4
  • 49
    • 33749438761 scopus 로고    scopus 로고
    • Quick minds don't blink: Electrophysiological correlates of individual differences in attentional selection
    • Martens S, Munneke J, Smid H, Johnson A (2006) Quick minds don't blink: Electrophysiological correlates of individual differences in attentional selection. J Cognit Neurosci 18(9): 1423-1438.
    • (2006) J Cognit Neurosci , vol.18 , Issue.9 , pp. 1423-1438
    • Martens, S.1    Munneke, J.2    Smid, H.3    Johnson, A.4
  • 51
    • 0029967892 scopus 로고    scopus 로고
    • Word meanings can be accessed but not reported during the attentional blink
    • Luck S, Vogel E, Shapiro K (1996) Word meanings can be accessed but not reported during the attentional blink. Nature 383: 616-618.
    • (1996) Nature , vol.383 , pp. 616-618
    • Luck, S.1    Vogel, E.2    Shapiro, K.3
  • 52
    • 0032253570 scopus 로고    scopus 로고
    • Electrophysiological evidence for a postperceptual locus of suppression during the attentional blink
    • Vogel EK, Luck SJ, Shapiro KL (1998) Electrophysiological evidence for a postperceptual locus of suppression during the attentional blink. J Exp Psychol Hum Percept Perform 24: 1656-74.
    • (1998) J Exp Psychol Hum Percept Perform , vol.24 , pp. 1656-1674
    • Vogel, E.K.1    Luck, S.J.2    Shapiro, K.L.3
  • 54
    • 33845352297 scopus 로고    scopus 로고
    • Task-irrelevant visual motion and flicker attenuate the attentional blink
    • Arend I, Johnston S, Shapiro K (2006) Task-irrelevant visual motion and flicker attenuate the attentional blink. Psychonom Bull Rev 13(4): 600-607.
    • (2006) Psychonom Bull Rev , vol.13 , Issue.4 , pp. 600-607
    • Arend, I.1    Johnston, S.2    Shapiro, K.3
  • 55
    • 17444427776 scopus 로고    scopus 로고
    • The beneficial effect of concurrent taskirrelevant mental activity on temporal attention
    • Olivers CN, Nieuwenhuis S (2005) The beneficial effect of concurrent taskirrelevant mental activity on temporal attention. Psych Sci 16: 265-269.
    • (2005) Psych Sci , vol.16 , pp. 265-269
    • Olivers, C.N.1    Nieuwenhuis, S.2
  • 56
    • 33747159280 scopus 로고    scopus 로고
    • The beneficial effects of additional task load positive affect and instruction on the attentional blink
    • Olivers CN, Nieuwenhuis S (2006) The beneficial effects of additional task load positive affect and instruction on the attentional blink. J Exp Psychol Hum Percept Perform 32(2): 364-79.
    • (2006) J Exp Psychol Hum Percept Perform , vol.32 , Issue.2 , pp. 364-379
    • Olivers, C.N.1    Nieuwenhuis, S.2
  • 57
    • 0032116848 scopus 로고    scopus 로고
    • Two attentional deficits in serial target search: The visual attentional blink and an amodal taskswitch deficit
    • Potter M, Chun MM, Banks BS, Muckenhoupt M (1998) Two attentional deficits in serial target search: The visual attentional blink and an amodal taskswitch deficit. J Exp Psychol Learn Mem Cogn 24(4): 979-992.
    • (1998) J Exp Psychol Learn Mem Cogn , vol.24 , Issue.4 , pp. 979-992
    • Potter, M.1    Chun, M.M.2    Banks, B.S.3    Muckenhoupt, M.4
  • 58
    • 33845400993 scopus 로고    scopus 로고
    • Isolation of a central bottleneck of information processing with time-resolved fMRI
    • Dux PE, Ivanoff J, Asplund CL, Marois R (2006) Isolation of a central bottleneck of information processing with time-resolved fMRI. Neuron 52(6): 1109-1120.
    • (2006) Neuron , vol.52 , Issue.6 , pp. 1109-1120
    • Dux, P.E.1    Ivanoff, J.2    Asplund, C.L.3    Marois, R.4
  • 59
    • 19544390006 scopus 로고    scopus 로고
    • Capacity limits of information processing in the brain
    • Marois R, Ivanoff J (2005) Capacity limits of information processing in the brain. Trends in Cognitive Sciences 9(6): 296-304.
    • (2005) Trends in Cognitive Sciences , vol.9 , Issue.6 , pp. 296-304
    • Marois, R.1    Ivanoff, J.2


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