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Volumn 46, Issue 4, 2009, Pages 1127-1136

Task- and performance-related modulation of domain-specific auditory short-term memory representations in the gamma-band

Author keywords

Auditory pattern processing; Auditory spatial processing; Gamma band activity; Magnetoencephalography; Performance; Short term memory

Indexed keywords

ADULT; ARTICLE; BRAIN MAPPING; CONTROLLED STUDY; FEMALE; HUMAN; HUMAN EXPERIMENT; MAGNETOENCEPHALOGRAPHY; MALE; MEMORY CONSOLIDATION; PRIORITY JOURNAL; SHORT TERM MEMORY; SPATIAL MEMORY; TASK PERFORMANCE;

EID: 67349114544     PISSN: 10538119     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.neuroimage.2009.03.011     Document Type: Article
Times cited : (35)

References (52)
  • 1
    • 33947713243 scopus 로고    scopus 로고
    • Processing of location and pattern changes of natural sounds in the human auditory cortex
    • Altmann C.F., Bledowski C., Wibral M., and Kaiser J. Processing of location and pattern changes of natural sounds in the human auditory cortex. Neuroimage 35 (2007) 1192-1200
    • (2007) Neuroimage , vol.35 , pp. 1192-1200
    • Altmann, C.F.1    Bledowski, C.2    Wibral, M.3    Kaiser, J.4
  • 2
    • 1942510644 scopus 로고    scopus 로고
    • Assessing the auditory dual-pathway model in humans
    • Arnott S.R., Binns M.A., Grady C.L., and Alain C. Assessing the auditory dual-pathway model in humans. Neuroimage 22 (2004) 401-408
    • (2004) Neuroimage , vol.22 , pp. 401-408
    • Arnott, S.R.1    Binns, M.A.2    Grady, C.L.3    Alain, C.4
  • 3
    • 32544438571 scopus 로고    scopus 로고
    • Tactile spatial attention enhances gamma-band activity in somatosensory cortex and reduces low-frequency activity in parieto-occipital areas
    • Bauer M., Oostenveld R., Peeters M., and Fries P. Tactile spatial attention enhances gamma-band activity in somatosensory cortex and reduces low-frequency activity in parieto-occipital areas. J. Neurosci. 26 (2006) 490-501
    • (2006) J. Neurosci. , vol.26 , pp. 490-501
    • Bauer, M.1    Oostenveld, R.2    Peeters, M.3    Fries, P.4
  • 4
    • 0027237538 scopus 로고
    • An alternative method for significance testing of waveform difference potentials
    • Blair R.C., and Karniski W. An alternative method for significance testing of waveform difference potentials. Psychophysiol. 30 (1993) 518-524
    • (1993) Psychophysiol. , vol.30 , pp. 518-524
    • Blair, R.C.1    Karniski, W.2
  • 5
    • 33750718829 scopus 로고    scopus 로고
    • A cross-laboratory study of event-related gamma activity in a standard object recognition paradigm
    • Busch N.A., Herrmann C.S., Müller M.M., Lenz D., and Gruber T. A cross-laboratory study of event-related gamma activity in a standard object recognition paradigm. Neuroimage 33 (2006) 1169-1177
    • (2006) Neuroimage , vol.33 , pp. 1169-1177
    • Busch, N.A.1    Herrmann, C.S.2    Müller, M.M.3    Lenz, D.4    Gruber, T.5
  • 6
    • 36849090861 scopus 로고    scopus 로고
    • Modes of memory: early electrophysiological markers of repetition suppression and recognition enhancement predict behavioral performance
    • Busch N.A., Groh-Bordin C., Zimmer H.D., and Herrmann C.S. Modes of memory: early electrophysiological markers of repetition suppression and recognition enhancement predict behavioral performance. Psychophysiol. 45 (2008) 25-35
    • (2008) Psychophysiol. , vol.45 , pp. 25-35
    • Busch, N.A.1    Groh-Bordin, C.2    Zimmer, H.D.3    Herrmann, C.S.4
  • 7
    • 0029864969 scopus 로고    scopus 로고
    • A new method for quantifying EEG event-related desynchronization:amplitude envelope analysis
    • Clochon P., Fontbonne J., Lebrun N., and Etevenon P. A new method for quantifying EEG event-related desynchronization:amplitude envelope analysis. Electroencephalogr. Clin. Neurophysiol. 98 (1996) 126-129
    • (1996) Electroencephalogr. Clin. Neurophysiol. , vol.98 , pp. 126-129
    • Clochon, P.1    Fontbonne, J.2    Lebrun, N.3    Etevenon, P.4
  • 8
    • 33645068840 scopus 로고    scopus 로고
    • Is the prefrontal cortex necessary for delay task performance? Evidence from lesion and FMRI data
    • D'Esposito M., Cooney J.W., Gazzaley A., Gibbs S.E., and Postle B.R. Is the prefrontal cortex necessary for delay task performance? Evidence from lesion and FMRI data. J. Int. Neuropsychol. Soc. 12 (2006) 248-260
    • (2006) J. Int. Neuropsychol. Soc. , vol.12 , pp. 248-260
    • D'Esposito, M.1    Cooney, J.W.2    Gazzaley, A.3    Gibbs, S.E.4    Postle, B.R.5
  • 9
    • 0024255761 scopus 로고
    • Coherent oscillations: a mechanism of feature linking in the visual cortex? Multiple electrode and correlation analyses in the cat
    • Eckhorn R., Bauer R., Jordan W., Brosch M., Kruse W., Munk M., and Reitboeck H.J. Coherent oscillations: a mechanism of feature linking in the visual cortex? Multiple electrode and correlation analyses in the cat. Biol. Cybern. 60 (1988) 121-130
    • (1988) Biol. Cybern. , vol.60 , pp. 121-130
    • Eckhorn, R.1    Bauer, R.2    Jordan, W.3    Brosch, M.4    Kruse, W.5    Munk, M.6    Reitboeck, H.J.7
  • 10
    • 0035147986 scopus 로고    scopus 로고
    • Temporal binding and the neural correlates of sensory awareness
    • Engel A.K., and Singer W. Temporal binding and the neural correlates of sensory awareness. Trends Cogn. Sci. 5 (2001) 16-25
    • (2001) Trends Cogn. Sci. , vol.5 , pp. 16-25
    • Engel, A.K.1    Singer, W.2
  • 11
    • 0030778853 scopus 로고    scopus 로고
    • Synchronization of oscillatory responses in visual cortex correlates with perception in interocular rivalry
    • Fries P., Roelfsema P.R., Engel A.K., König P., and Singer W. Synchronization of oscillatory responses in visual cortex correlates with perception in interocular rivalry. Proc. Natl. Acad. Sci. U. S. A. 94 (1997) 12699-12704
    • (1997) Proc. Natl. Acad. Sci. U. S. A. , vol.94 , pp. 12699-12704
    • Fries, P.1    Roelfsema, P.R.2    Engel, A.K.3    König, P.4    Singer, W.5
  • 12
    • 0024514737 scopus 로고
    • Oscillatory responses in cat visual cortex exhibit inter-columnar synchronization which reflects global stimulus properties
    • Gray C.M., König P., Engel A.K., and Singer W. Oscillatory responses in cat visual cortex exhibit inter-columnar synchronization which reflects global stimulus properties. Nature 338 (1989) 334-337
    • (1989) Nature , vol.338 , pp. 334-337
    • Gray, C.M.1    König, P.2    Engel, A.K.3    Singer, W.4
  • 13
    • 10944271656 scopus 로고    scopus 로고
    • Oscillatory brain activity dissociates between associative stimulus content in a repetition priming task in the human EEG
    • Gruber T., and Müller M.M. Oscillatory brain activity dissociates between associative stimulus content in a repetition priming task in the human EEG. Cereb. Cortex 15 (2005) 109-116
    • (2005) Cereb. Cortex , vol.15 , pp. 109-116
    • Gruber, T.1    Müller, M.M.2
  • 14
    • 0344771025 scopus 로고    scopus 로고
    • Selective visual-spatial attention alters induced gamma band responses in the human EEG
    • Gruber T., Müller M.M., Keil A., and Elbert T. Selective visual-spatial attention alters induced gamma band responses in the human EEG. Clin. Neurophysiol. 110 (1999) 2074-2085
    • (1999) Clin. Neurophysiol. , vol.110 , pp. 2074-2085
    • Gruber, T.1    Müller, M.M.2    Keil, A.3    Elbert, T.4
  • 15
    • 4043184230 scopus 로고    scopus 로고
    • Induced gamma band responses: an early marker of memory encoding and retrieval
    • Gruber T., Tsivilis D., Montaldi D., and Müller M.M. Induced gamma band responses: an early marker of memory encoding and retrieval. Neuroreport 15 (2004) 1837-1841
    • (2004) Neuroreport , vol.15 , pp. 1837-1841
    • Gruber, T.1    Tsivilis, D.2    Montaldi, D.3    Müller, M.M.4
  • 16
    • 33947120766 scopus 로고    scopus 로고
    • Stimuli of varying spatial scale induce gamma activity with distinct temporal characteristics in human visual cortex
    • Hadjipapas A., Adjamian P., Swettenham J.B., Holliday I.E., and Barnes G.R. Stimuli of varying spatial scale induce gamma activity with distinct temporal characteristics in human visual cortex. Neuroimage 35 (2007) 518-530
    • (2007) Neuroimage , vol.35 , pp. 518-530
    • Hadjipapas, A.1    Adjamian, P.2    Swettenham, J.B.3    Holliday, I.E.4    Barnes, G.R.5
  • 17
    • 0032932256 scopus 로고    scopus 로고
    • Gamma responses and ERPs in a visual classification task
    • Herrmann C.S., Mecklinger A., and Pfeifer E. Gamma responses and ERPs in a visual classification task. Clin. Neurophysiol. 110 (1999) 636-642
    • (1999) Clin. Neurophysiol. , vol.110 , pp. 636-642
    • Herrmann, C.S.1    Mecklinger, A.2    Pfeifer, E.3
  • 18
    • 4143050347 scopus 로고    scopus 로고
    • Cognitive functions of gamma-band activity: memory match and utilization
    • Herrmann C.S., Munk M.H., and Engel A.K. Cognitive functions of gamma-band activity: memory match and utilization. Trends Cogn. Sci. 8 (2004) 347-355
    • (2004) Trends Cogn. Sci. , vol.8 , pp. 347-355
    • Herrmann, C.S.1    Munk, M.H.2    Engel, A.K.3
  • 19
    • 34250807958 scopus 로고    scopus 로고
    • Human gamma-frequency oscillations associated with attention and memory
    • Jensen O., Kaiser J., and Lachaux J.P. Human gamma-frequency oscillations associated with attention and memory. Trends Neurosci. 30 (2007) 317-324
    • (2007) Trends Neurosci. , vol.30 , pp. 317-324
    • Jensen, O.1    Kaiser, J.2    Lachaux, J.P.3
  • 20
    • 33947502293 scopus 로고    scopus 로고
    • Modulation of gamma and alpha activity during a working memory task engaging the dorsal or ventral stream
    • Jokisch D., and Jensen O. Modulation of gamma and alpha activity during a working memory task engaging the dorsal or ventral stream. J. Neurosci. 27 (2007) 3244-3251
    • (2007) J. Neurosci. , vol.27 , pp. 3244-3251
    • Jokisch, D.1    Jensen, O.2
  • 21
    • 0034280703 scopus 로고    scopus 로고
    • Right-hemisphere dominance for the processing of sound-source lateralization
    • Kaiser J., Lutzenberger W., Preissl H., Ackermann H., and Birbaumer N. Right-hemisphere dominance for the processing of sound-source lateralization. J. Neurosci. 20 (2000) 6631-6639
    • (2000) J. Neurosci. , vol.20 , pp. 6631-6639
    • Kaiser, J.1    Lutzenberger, W.2    Preissl, H.3    Ackermann, H.4    Birbaumer, N.5
  • 22
    • 0036142115 scopus 로고    scopus 로고
    • Dynamics of gamma-band activity induced by auditory pattern changes in humans
    • Kaiser J., Lutzenberger W., Ackermann H., and Birbaumer N. Dynamics of gamma-band activity induced by auditory pattern changes in humans. Cereb. Cortex 12 (2002) 212-221
    • (2002) Cereb. Cortex , vol.12 , pp. 212-221
    • Kaiser, J.1    Lutzenberger, W.2    Ackermann, H.3    Birbaumer, N.4
  • 23
    • 0142074688 scopus 로고    scopus 로고
    • Dynamics of gamma-band activity in human magnetoencephalogram during auditory pattern working memory
    • Kaiser J., Ripper B., Birbaumer N., and Lutzenberger W. Dynamics of gamma-band activity in human magnetoencephalogram during auditory pattern working memory. Neuroimage 20 (2003) 816-827
    • (2003) Neuroimage , vol.20 , pp. 816-827
    • Kaiser, J.1    Ripper, B.2    Birbaumer, N.3    Lutzenberger, W.4
  • 24
    • 33847258682 scopus 로고    scopus 로고
    • Prefrontal gamma-band activity distinguishes between sound durations
    • Kaiser J., Leiberg S., Rust H., and Lutzenberger W. Prefrontal gamma-band activity distinguishes between sound durations. Brain Res. 1139 (2007) 153-162
    • (2007) Brain Res. , vol.1139 , pp. 153-162
    • Kaiser, J.1    Leiberg, S.2    Rust, H.3    Lutzenberger, W.4
  • 25
    • 58149195775 scopus 로고    scopus 로고
    • Distinct gamma-band components reflect the short-term memory maintenance of different sound lateralization angles
    • Kaiser J., Heidegger T., Wibral M., Altmann C.F., and Lutzenberger W. Distinct gamma-band components reflect the short-term memory maintenance of different sound lateralization angles. Cereb. Cortex 18 (2008) 2286-2295
    • (2008) Cereb. Cortex , vol.18 , pp. 2286-2295
    • Kaiser, J.1    Heidegger, T.2    Wibral, M.3    Altmann, C.F.4    Lutzenberger, W.5
  • 26
    • 55149088107 scopus 로고    scopus 로고
    • Temporal dynamics of stimulus-specific gamma-band activity components during auditory short-term memory
    • Kaiser J., Rahm B., and Lutzenberger W. Temporal dynamics of stimulus-specific gamma-band activity components during auditory short-term memory. Neuroimage 44 (2009) 257-264
    • (2009) Neuroimage , vol.44 , pp. 257-264
    • Kaiser, J.1    Rahm, B.2    Lutzenberger, W.3
  • 27
  • 28
    • 52949084665 scopus 로고    scopus 로고
    • Enhanced gamma-band activity in ADHD patients lacks correlation with memory performance found in healthy children
    • Lenz D., Krauel K., Schadow J., Baving L., Duzel E., and Herrmann C.S. Enhanced gamma-band activity in ADHD patients lacks correlation with memory performance found in healthy children. Brain Res. 1235 (2008) 117-132
    • (2008) Brain Res. , vol.1235 , pp. 117-132
    • Lenz, D.1    Krauel, K.2    Schadow, J.3    Baving, L.4    Duzel, E.5    Herrmann, C.S.6
  • 29
  • 30
    • 0036663015 scopus 로고    scopus 로고
    • Dynamics of gamma-band activity during an audiospatial working memory task in humans
    • Lutzenberger W., Ripper B., Busse L., Birbaumer N., and Kaiser J. Dynamics of gamma-band activity during an audiospatial working memory task in humans. J. Neurosci. 22 (2002) 5630-5638
    • (2002) J. Neurosci. , vol.22 , pp. 5630-5638
    • Lutzenberger, W.1    Ripper, B.2    Busse, L.3    Birbaumer, N.4    Kaiser, J.5
  • 31
    • 21744450745 scopus 로고    scopus 로고
    • Multisensory spatial interactions: a window onto functional integration in the human brain
    • Macaluso E., and Driver J. Multisensory spatial interactions: a window onto functional integration in the human brain. Trends Neurosci. 28 (2005) 264-271
    • (2005) Trends Neurosci. , vol.28 , pp. 264-271
    • Macaluso, E.1    Driver, J.2
  • 32
    • 0029954994 scopus 로고    scopus 로고
    • Visually induced gamma-band responses in human electroencephalographic activity-a link to animal studies
    • Müller M.M., Bosch J., Elbert T., Kreiter A., Sosa M.V., Sosa P.V., and Rockstroh B. Visually induced gamma-band responses in human electroencephalographic activity-a link to animal studies. Exp. Brain Res. 112 (1996) 96-102
    • (1996) Exp. Brain Res. , vol.112 , pp. 96-102
    • Müller, M.M.1    Bosch, J.2    Elbert, T.3    Kreiter, A.4    Sosa, M.V.5    Sosa, P.V.6    Rockstroh, B.7
  • 33
    • 1642344333 scopus 로고    scopus 로고
    • Neuronal synchronization and selective color processing in the human brain
    • Müller M.M., and Keil A. Neuronal synchronization and selective color processing in the human brain. J. Cogn. Neurosci. 16 (2004) 503-522
    • (2004) J. Cogn. Neurosci. , vol.16 , pp. 503-522
    • Müller, M.M.1    Keil, A.2
  • 34
    • 67649672146 scopus 로고    scopus 로고
    • Muthukumaraswamy, S.D., Singh, K.D., in press. Functional decoupling of BOLD and gamma-band amplitudes in human primary visual cortex. Hum. Brain Mapp.doi:10.1002/hbm.20644.
    • Muthukumaraswamy, S.D., Singh, K.D., in press. Functional decoupling of BOLD and gamma-band amplitudes in human primary visual cortex. Hum. Brain Mapp.doi:10.1002/hbm.20644.
  • 35
    • 41649117029 scopus 로고    scopus 로고
    • Spatiotemporal frequency tuning of BOLD and gamma band MEG responses compared in primary visual cortex
    • Muthukumaraswamy S.D., and Singh K.D. Spatiotemporal frequency tuning of BOLD and gamma band MEG responses compared in primary visual cortex. Neuroimage 40 (2008) 1552-1560
    • (2008) Neuroimage , vol.40 , pp. 1552-1560
    • Muthukumaraswamy, S.D.1    Singh, K.D.2
  • 36
  • 37
    • 0242332256 scopus 로고    scopus 로고
    • Seeking the neural substrates of visual working memory storage
    • Postle B.R., Druzgal T.J., and D'Esposito M. Seeking the neural substrates of visual working memory storage. Cortex 39 (2003) 927-946
    • (2003) Cortex , vol.39 , pp. 927-946
    • Postle, B.R.1    Druzgal, T.J.2    D'Esposito, M.3
  • 38
    • 20544465451 scopus 로고    scopus 로고
    • Directing the mind's eye: prefrontal, inferior and medial temporal mechanisms for visual working memory
    • Ranganath C., and D'Esposito M. Directing the mind's eye: prefrontal, inferior and medial temporal mechanisms for visual working memory. Curr. Opin. Neurobiol. 15 (2005) 175-182
    • (2005) Curr. Opin. Neurobiol. , vol.15 , pp. 175-182
    • Ranganath, C.1    D'Esposito, M.2
  • 39
    • 0032142971 scopus 로고    scopus 로고
    • Cortical processing of complex sounds
    • Rauschecker J.P. Cortical processing of complex sounds. Curr. Opin. Neurobiol. 8 (1998) 516-521
    • (1998) Curr. Opin. Neurobiol. , vol.8 , pp. 516-521
    • Rauschecker, J.P.1
  • 40
    • 0036137407 scopus 로고    scopus 로고
    • An auditory domain in primate prefrontal cortex
    • Romanski L.M., and Goldman-Rakic P.S. An auditory domain in primate prefrontal cortex. Nat. Neurosci. 5 (2002) 15-16
    • (2002) Nat. Neurosci. , vol.5 , pp. 15-16
    • Romanski, L.M.1    Goldman-Rakic, P.S.2
  • 41
    • 32544449602 scopus 로고    scopus 로고
    • Parietal cortex mediates voluntary control of spatial and nonspatial auditory attention
    • Shomstein S., and Yantis S. Parietal cortex mediates voluntary control of spatial and nonspatial auditory attention. J. Neurosci. 26 (2006) 435-439
    • (2006) J. Neurosci. , vol.26 , pp. 435-439
    • Shomstein, S.1    Yantis, S.2
  • 42
    • 0032830151 scopus 로고    scopus 로고
    • Neuronal synchrony: A versatile code for the definition of relations?
    • Singer, W., 1999. Neuronal synchrony: a versatile code for the definition of relations? Neuron 24, 49-65, 111-125.
    • (1999) Neuron , vol.24 , Issue.49-65 , pp. 111-125
    • Singer, W.1
  • 44
    • 0029945198 scopus 로고    scopus 로고
    • Stimulus specificity of phase-locked and non-phase-locked 40 Hz visual responses in human
    • Tallon-Baudry C., Bertrand O., Delpuech C., and Pernier J. Stimulus specificity of phase-locked and non-phase-locked 40 Hz visual responses in human. J. Neurosci. 16 (1996) 4240-4249
    • (1996) J. Neurosci. , vol.16 , pp. 4240-4249
    • Tallon-Baudry, C.1    Bertrand, O.2    Delpuech, C.3    Pernier, J.4
  • 45
    • 0032101757 scopus 로고    scopus 로고
    • Induced gamma-band activity during the delay of a visual short-term memory task in humans
    • Tallon-Baudry C., Bertrand O., Peronnet F., and Pernier J. Induced gamma-band activity during the delay of a visual short-term memory task in humans. J. Neurosci. 18 (1998) 4244-4254
    • (1998) J. Neurosci. , vol.18 , pp. 4244-4254
    • Tallon-Baudry, C.1    Bertrand, O.2    Peronnet, F.3    Pernier, J.4
  • 46
    • 23944521565 scopus 로고    scopus 로고
    • Coherent oscillatory activity in monkey area v4 predicts successful allocation of attention
    • Taylor K., Mandon S., Freiwald W.A., and Kreiter A.K. Coherent oscillatory activity in monkey area v4 predicts successful allocation of attention. Cereb. Cortex 15 (2005) 1424-1437
    • (2005) Cereb. Cortex , vol.15 , pp. 1424-1437
    • Taylor, K.1    Mandon, S.2    Freiwald, W.A.3    Kreiter, A.K.4
  • 47
    • 33947206553 scopus 로고    scopus 로고
    • Auditory short-term memory behaves like visual short-term memory
    • Visscher K.M., Kaplan E., Kahana M.J., and Sekuler R. Auditory short-term memory behaves like visual short-term memory. PLoS Biol. 5 (2007) e56
    • (2007) PLoS Biol. , vol.5
    • Visscher, K.M.1    Kaplan, E.2    Kahana, M.J.3    Sekuler, R.4
  • 48
    • 1942455789 scopus 로고    scopus 로고
    • Neural activity predicts individual differences in visual working memory capacity
    • Vogel E.K., and Machizawa M.G. Neural activity predicts individual differences in visual working memory capacity. Nature 428 (2004) 748-751
    • (2004) Nature , vol.428 , pp. 748-751
    • Vogel, E.K.1    Machizawa, M.G.2
  • 49
    • 28544443479 scopus 로고    scopus 로고
    • Neural measures reveal individual differences in controlling access to working memory
    • Vogel E.K., McCollough A.W., and Machizawa M.G. Neural measures reveal individual differences in controlling access to working memory. Nature 438 (2005) 500-503
    • (2005) Nature , vol.438 , pp. 500-503
    • Vogel, E.K.1    McCollough, A.W.2    Machizawa, M.G.3
  • 50
    • 0033692573 scopus 로고    scopus 로고
    • Different frequencies for different scales of cortical integration: from local gamma to long range alpha/theta synchronization
    • von Stein A., and Sarnthein J. Different frequencies for different scales of cortical integration: from local gamma to long range alpha/theta synchronization. Int. J. Psychophysiol. 38 (2000) 301-313
    • (2000) Int. J. Psychophysiol. , vol.38 , pp. 301-313
    • von Stein, A.1    Sarnthein, J.2
  • 51
    • 34147135180 scopus 로고    scopus 로고
    • The role of neuronal synchronization in selective attention
    • Womelsdorf T., and Fries P. The role of neuronal synchronization in selective attention. Curr. Opin. Neurobiol. 17 (2007) 154-160
    • (2007) Curr. Opin. Neurobiol. , vol.17 , pp. 154-160
    • Womelsdorf, T.1    Fries, P.2
  • 52
    • 40449102478 scopus 로고    scopus 로고
    • Neural dissociation between visual awareness and spatial attention
    • Wyart V., and Tallon-Baudry C. Neural dissociation between visual awareness and spatial attention. J. Neurosci. 28 (2008) 2667-2679
    • (2008) J. Neurosci. , vol.28 , pp. 2667-2679
    • Wyart, V.1    Tallon-Baudry, C.2


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