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1
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11144353643
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Overt propositional speech in chronic nonfluent aphasia studied with the dynamic susceptibility contrast fMRI method
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Naeser MA, Martin PI, Baker EH, et al. Overt propositional speech in chronic nonfluent aphasia studied with the dynamic susceptibility contrast fMRI method. Neuroimage 2004; 22:29-41. This fMRI study shows overactivation in right hemisphere regions of interest that were not all specific to speech production. The authors conclude that right hemisphere activation is maladaptive rather than compensatory.
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(2004)
Neuroimage
, vol.22
, pp. 29-41
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Naeser, M.A.1
Martin, P.I.2
Baker, E.H.3
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2
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4344690895
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Functional MRI follow-up study of language processes in healthy subjects and during recovery in a case of aphasia
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Fernandez B, Cardebat D, Demonet JF, et al. Functional MRI follow-up study of language processes in healthy subjects and during recovery in a case of aphasia. Stroke 2004; 35:2171-2176. This fMRI study shows how abnormal activation during speech comprehension and production changes over the course of recovery. In particular, enhanced right hemisphere activation was observed early and persisted, whereas enhanced left hemisphere activation was only observed after recovery.
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(2004)
Stroke
, vol.35
, pp. 2171-2176
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Fernandez, B.1
Cardebat, D.2
Demonet, J.F.3
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3
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4344696568
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Cortical language activation in aphasia: A functional MRI study
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Xu XJ, Zhang MM, Shang DS, et al. Cortical language activation in aphasia: a functional MRI study. Chin Med J (Engl) 2004; 117:1011-1106. This study shows abnormal inferior frontal activation during severely impaired speech production 10 days after a left frontal stroke. The right frontal activation appeared to be specific to the lesion site because it was not observed when the lesion involved the temporal lobes.
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(2004)
Chin Med J (Engl)
, vol.117
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Xu, X.J.1
Zhang, M.M.2
Shang, D.S.3
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4
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Language-related brain function during word repetition in post-stroke aphasics
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Abo M, Senoo A, Watanabe S, et al. Language-related brain function during word repetition in post-stroke aphasics. Neuroreport 2004; 15:1891-1894. This fMRI study shows that the site of right hemisphere speech-related activation after aphasic stroke depends on the site of the lesion: Right frontal activation followed left frontal damage and right temporoparietal activation followed left temporal damage.
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(2004)
Neuroreport
, vol.15
, pp. 1891-1894
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Abo, M.1
Senoo, A.2
Watanabe, S.3
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5
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0842267571
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Functional magnetic resonance imaging before and after aphasia therapy: Shifts in hemodynamic time to peak during an overt language task
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Peck KK, Moore AB, Crosson BA, et al. Functional magnetic resonance imaging before and after aphasia therapy: shifts in hemodynamic time to peak during an overt language task. Stroke 2004; 35:554-559. This fMRI study demonstrates that abnormal activation after aphasia can be characterized in terms of the time taken for activation to reach a peak.
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(2004)
Stroke
, vol.35
, pp. 554-559
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Peck, K.K.1
Moore, A.B.2
Crosson, B.A.3
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6
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0346362443
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Monitoring and the controlled processing of meaning: Distinct prefrontal systems
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Sharp DJ, Scott SK, Wise RJ. Monitoring and the controlled processing of meaning: distinct prefrontal systems. Cereb Cortex 2004; 14:1-10. This PET study of auditory semantic processing shows that left superior temporal lesions reduce activation relative to control subjects in the left fusiform, and that good performance is correlated with right fusiform activation. Contrary to other studies, this study shows the importance of right hemisphere activation and that abnormal effects in patients can be induced in neurologically normal subjects by distorting speech perception.
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(2004)
Cereb Cortex
, vol.14
, pp. 1-10
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Sharp, D.J.1
Scott, S.K.2
Wise, R.J.3
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7
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1642533708
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Recovery of semantic word processing in global aphasia: A functional MRI study
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Zahn R, Drews E, Specht K, et al. Recovery of semantic word processing in global aphasia: a functional MRI study. Brain Res Cogn Brain Res 2004; 18:322-336. This fMRI study shows that auditory semantic processing after large left hemisphere lesions involves enhanced activation in areas that are also activated in neurologically normal controls.
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(2004)
Brain Res Cogn Brain Res
, vol.18
, pp. 322-336
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Zahn, R.1
Drews, E.2
Specht, K.3
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8
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13844310733
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Spatiotemporal patterns of language-specific brain activity in patients with chronic aphasia after stroke using magnetoencephalography
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Breier JI, Castillo EM, Boake C, et al. Spatiotemporal patterns of language-specific brain activity in patients with chronic aphasia after stroke using magnetoencephalography. Neuroimage 2004; 23:1308-1316. This magnetoencephalography study suggests that recovery is best when pre-morbid language areas are activated, and that activation outside premorbid language areas does not correlate with good performance.
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(2004)
Neuroimage
, vol.23
, pp. 1308-1316
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Breier, J.I.1
Castillo, E.M.2
Boake, C.3
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9
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Neural correlates of recovery from aphasia after damage to left inferior frontal cortex
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Rosen HJ, Petersen SE, Linenweber MR, et al. Neural correlates of recovery from aphasia after damage to left inferior frontal cortex. Neurology 2000; 55:1883-1894.
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Neurology
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Rosen, H.J.1
Petersen, S.E.2
Linenweber, M.R.3
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10
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Speech production after stroke: The role of the right pars opercularis
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Blank SC, Bird H, Turkheimer F, Wise RJ. Speech production after stroke: the role of the right pars opercularis. Ann Neurol 2003; 54:310-320.
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Ann Neurol
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Blank, S.C.1
Bird, H.2
Turkheimer, F.3
Wise, R.J.4
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12
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Speech-induced cerebral metabolic activation reflects recovery from aphasia
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Heiss WD, Karbe H, Weber-Luxenburger G, et al. Speech-induced cerebral metabolic activation reflects recovery from aphasia. J Neurol Sci 1997; 145:213-217.
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Heiss, W.D.1
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Degeneracy and complexity in biological systems
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Edelman GM, Gally JA. Degeneracy and complexity in biological systems. Proc Natl Acad Sci U S A 2001; 98:13763-13768.
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Proc Natl Acad Sci U S A
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Edelman, G.M.1
Gally, J.A.2
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Degeneracy and redundancy in cognitive anatomy
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Friston KJ, Price CJ. Degeneracy and redundancy in cognitive anatomy. Trends Cogn Sci 2003; 7:151-152.
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Trends Cogn Sci
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Friston, K.J.1
Price, C.J.2
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Degenerate neuronal systems sustaining cognitive functions
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Noppeney U, Friston KJ, Price CJ. Degenerate neuronal systems sustaining cognitive functions. J Anat 2004; 205:433-442.
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J Anat
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Noppeney, U.1
Friston, K.J.2
Price, C.J.3
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Recovery of semantic word processing in transcortical sensory aphasia: A functional magnetic resonance imaging study
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Zahn R, Huber W, Drews E, et al. Recovery of semantic word processing in transcortical sensory aphasia: a functional magnetic resonance imaging study. Neurocase 2002; 8:376-386.
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Neurocase
, vol.8
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Zahn, R.1
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Redundancy reduction revisited
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Barlow H. Redundancy reduction revisited. Network 2001; 12:241-253.
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Network
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Functional imaging studies of neuropsychological patients: Applications and limitations
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Price CJ, Friston KJ. Functional imaging studies of neuropsychological patients: applications and limitations. Neurocase 2002; 8:345-354.
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Neurocase
, vol.8
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Price, C.J.1
Friston, K.J.2
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Essential language function of the right hemisphere in brain tumor patients
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Thiel A, Habedank B, Winhuisen L, et al. Essential language function of the right hemisphere in brain tumor patients. Ann Neurol 2005; 57:128-131.
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Ann Neurol
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Thiel, A.1
Habedank, B.2
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Transcranial magnetic stimulation as a complementary treatment for aphasia
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Martin PI, Naeser MA, Theoret H, et al. Transcranial magnetic stimulation as a complementary treatment for aphasia. Semin Speech Lang 2004; 25:181-191.
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Semin Speech Lang
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Martin, P.I.1
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