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Published in: Journal of Neural Transmission 4/2012

01-04-2012 | Movement Disorders - Original Article

The default mode network integrity in patients with Parkinson’s disease is levodopa equivalent dose-dependent

Authors: L. Krajcovicova, M. Mikl, R. Marecek, Irena Rektorova

Published in: Journal of Neural Transmission | Issue 4/2012

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Abstract

Disturbances in the default mode network (DMN) have been described in many neurological and psychiatric disorders including Parkinson’s disease (PD). The DMN is characterized by basal activity that increases during rest or passive visual fixation and decreases (“deactivates”) during cognitive tasks. The network is believed to be involved in cognitive processes. We examined the DMN in PD patients on dopaminergic medication with normal cognitive performance compared to age- and gender-matched healthy controls (HC) using fMRI and three methodological procedures: independent component analysis of resting-state data, analysis of deactivation during a complex visual scene-encoding task, and seed-based functional connectivity analysis. In the PD group, we also studied the effect of dopaminergic medication on the DMN integrity. We did not find any difference between the PD and HC groups in the DMN, but using the daily levodopa equivalent dose as a covariate, we observed an enhanced functional connectivity of the DMN in the posterior cingulate cortex and decreased activation in the left parahippocampal gyrus during the cognitive task. We conclude that dopaminergic therapy has a specific effect on both the DMN integrity and task-related brain activations in cognitively unimpaired PD patients, and these effects seem to be dose-dependent.
Literature
go back to reference Achard S, Bullmore E (2007) Efficiency and cost of economical brain functional networks. PLoS Comput Biol 3:e17PubMedCrossRef Achard S, Bullmore E (2007) Efficiency and cost of economical brain functional networks. PLoS Comput Biol 3:e17PubMedCrossRef
go back to reference Argyelan M, Carbon M, Ghilardi MF, Feigin A, Mattis P, Tang C, Dhawan V, Eidelberg D (2008) Dopaminergic suppression of brain deactivation responses during sequence learning. J Neurosci 28:10687–10695PubMedCrossRef Argyelan M, Carbon M, Ghilardi MF, Feigin A, Mattis P, Tang C, Dhawan V, Eidelberg D (2008) Dopaminergic suppression of brain deactivation responses during sequence learning. J Neurosci 28:10687–10695PubMedCrossRef
go back to reference Berger B, Trottier S, Verney C, Gaspar P, Alvarez C (1988) Regional and laminar distribution of the dopamine and serotonin innervation in the macaque cerebral cortex: a radioautographic study. J Comp Neurol 273:99–119PubMedCrossRef Berger B, Trottier S, Verney C, Gaspar P, Alvarez C (1988) Regional and laminar distribution of the dopamine and serotonin innervation in the macaque cerebral cortex: a radioautographic study. J Comp Neurol 273:99–119PubMedCrossRef
go back to reference Binder JR, Frost JA, Hammeke TA, Bellgowan PS, Rao SM, Cox RW (1999) Conceptual processing during the conscious resting state. A functional MRI study. J Cogn Neurosci 11:80–95PubMedCrossRef Binder JR, Frost JA, Hammeke TA, Bellgowan PS, Rao SM, Cox RW (1999) Conceptual processing during the conscious resting state. A functional MRI study. J Cogn Neurosci 11:80–95PubMedCrossRef
go back to reference Bluhm RL, Miller J, Lanius RA, Osuch EA, Boksman K, Neufeld RW, Théberge J, Schaefer B, Williamson P (2007) Spontaneous low-frequency fluctuations in the BOLD signal in schizophrenic patients: anomalies in the default network. Schizophr Bull 33:1004–1012PubMedCrossRef Bluhm RL, Miller J, Lanius RA, Osuch EA, Boksman K, Neufeld RW, Théberge J, Schaefer B, Williamson P (2007) Spontaneous low-frequency fluctuations in the BOLD signal in schizophrenic patients: anomalies in the default network. Schizophr Bull 33:1004–1012PubMedCrossRef
go back to reference Bohnen NI, Gedela S, Herath P, Constantine GM, Moore RY (2008) Selective hyposmia in Parkinson disease: association with hippocampal dopamine activity. Neurosci Lett 447:12–16PubMedCrossRef Bohnen NI, Gedela S, Herath P, Constantine GM, Moore RY (2008) Selective hyposmia in Parkinson disease: association with hippocampal dopamine activity. Neurosci Lett 447:12–16PubMedCrossRef
go back to reference Broyd SJ, Demanuele C, Debener S, Helps SK, James CJ, Sonuga-Barke EJ (2009) Default-mode brain dysfunction in mental disorders: a systematic review. Neurosci Biobehav Rev 33:279–296PubMedCrossRef Broyd SJ, Demanuele C, Debener S, Helps SK, James CJ, Sonuga-Barke EJ (2009) Default-mode brain dysfunction in mental disorders: a systematic review. Neurosci Biobehav Rev 33:279–296PubMedCrossRef
go back to reference Buckner RL, Snyder AZ, Shannon BJ, LaRossa G, Sachs R, Fotenos AF, Sheline YI, Klunk WE, Mathis CA, Morris JC, Mintun MA (2005) Molecular, structural, and functional characterization of Alzheimer’s disease: evidence for a relationship between default activity, amyloid, and memory. J Neurosci 25:7709–7717PubMedCrossRef Buckner RL, Snyder AZ, Shannon BJ, LaRossa G, Sachs R, Fotenos AF, Sheline YI, Klunk WE, Mathis CA, Morris JC, Mintun MA (2005) Molecular, structural, and functional characterization of Alzheimer’s disease: evidence for a relationship between default activity, amyloid, and memory. J Neurosci 25:7709–7717PubMedCrossRef
go back to reference Calhoun VD, Adali T, Pearlson GD, Pekar JJ (2001) A method for making group inferences from functional MRI data using independent component analysis. Hum Brain Map 14:140–151CrossRef Calhoun VD, Adali T, Pearlson GD, Pekar JJ (2001) A method for making group inferences from functional MRI data using independent component analysis. Hum Brain Map 14:140–151CrossRef
go back to reference Cools R (2006) Dopaminergic modulation of cognitive function—implications for l-DOPA treatment in Parkinson’s disease. Neurosci Biobehav Rev 30:1–23PubMedCrossRef Cools R (2006) Dopaminergic modulation of cognitive function—implications for l-DOPA treatment in Parkinson’s disease. Neurosci Biobehav Rev 30:1–23PubMedCrossRef
go back to reference Cools R, Frank MJ, Gibbs SE, Miyakawa A, Jagust W, D’Esposito M (2009) Striatal dopamine predicts outcome-specific reversal learning and its sensitivity to dopaminergic drug administration. J Neurosci 29:1538–1543PubMedCrossRef Cools R, Frank MJ, Gibbs SE, Miyakawa A, Jagust W, D’Esposito M (2009) Striatal dopamine predicts outcome-specific reversal learning and its sensitivity to dopaminergic drug administration. J Neurosci 29:1538–1543PubMedCrossRef
go back to reference Davies RR, Graham KS, Xuereb JH, Williams GB, Hodges JR (2004) The human perirhinal cortex and semantic memory. Eur J Neurosci 20:2441–2446PubMedCrossRef Davies RR, Graham KS, Xuereb JH, Williams GB, Hodges JR (2004) The human perirhinal cortex and semantic memory. Eur J Neurosci 20:2441–2446PubMedCrossRef
go back to reference Delaveau P, Salgado-Pineda P, Fossati P, Witjas T, Azulay JP, Blin O (2010) Dopaminergic modulation of the default mode network in Parkinson’s disease. Eur Neuropsychopharmacol 20:784–792PubMedCrossRef Delaveau P, Salgado-Pineda P, Fossati P, Witjas T, Azulay JP, Blin O (2010) Dopaminergic modulation of the default mode network in Parkinson’s disease. Eur Neuropsychopharmacol 20:784–792PubMedCrossRef
go back to reference Dickerson BC, Salat DH, Greve DN, Chua EF, Rand-Giovannetti E, Rentz DM, Bertram L, Mullin K, Tanzi RE, Blackner D, Albert MS, Sperling RA (2005) Increased hippocampal activation in mild cognitive impairment compared to normal aging and AD. Neurology 65:404–411PubMedCrossRef Dickerson BC, Salat DH, Greve DN, Chua EF, Rand-Giovannetti E, Rentz DM, Bertram L, Mullin K, Tanzi RE, Blackner D, Albert MS, Sperling RA (2005) Increased hippocampal activation in mild cognitive impairment compared to normal aging and AD. Neurology 65:404–411PubMedCrossRef
go back to reference Fahn S, Elston RL, members of the UPDRS Development Committee (1987) Unified Parkinson’s disease rating scale. In: Fahn S, Marsden CD, Goldstein M, Calne DB (eds) Recent developments in Parkinson’s disease, vol 2. MacMillan, New York, pp 53–163 Fahn S, Elston RL, members of the UPDRS Development Committee (1987) Unified Parkinson’s disease rating scale. In: Fahn S, Marsden CD, Goldstein M, Calne DB (eds) Recent developments in Parkinson’s disease, vol 2. MacMillan, New York, pp 53–163
go back to reference Fox MD, Raichle ME (2007) Spontaneous fluctuations in brain activity observed with functional magnetic resonance imaging. Nat Rev Neurosci 8:700–711PubMedCrossRef Fox MD, Raichle ME (2007) Spontaneous fluctuations in brain activity observed with functional magnetic resonance imaging. Nat Rev Neurosci 8:700–711PubMedCrossRef
go back to reference Fox MD, Snyder AZ, Vincent JL, Corbetta M, Van Essen DC, Raichle ME (2005) The human brain is intrinsically organized into dynamic, anticorrelated functional networks. Proc Natl Acad Sci USA 102:9673–9678PubMedCrossRef Fox MD, Snyder AZ, Vincent JL, Corbetta M, Van Essen DC, Raichle ME (2005) The human brain is intrinsically organized into dynamic, anticorrelated functional networks. Proc Natl Acad Sci USA 102:9673–9678PubMedCrossRef
go back to reference Garrity AG, Pearlson GD, McKiernan K, Lloyd D, Kiehl KA, Calhoun VD (2007) Aberrant “default mode” functional connectivity in schizophrenia. Am J Psychiatry 164:450–457PubMedCrossRef Garrity AG, Pearlson GD, McKiernan K, Lloyd D, Kiehl KA, Calhoun VD (2007) Aberrant “default mode” functional connectivity in schizophrenia. Am J Psychiatry 164:450–457PubMedCrossRef
go back to reference Greicius MD, Srivastava G, Reiss AL, Menon V (2004) Default-mode network activity distinguishes Alzheimer’s disease from healthy aging: evidence from functional MRI. Proc Natl Acad Sci USA 101:4637–4642PubMedCrossRef Greicius MD, Srivastava G, Reiss AL, Menon V (2004) Default-mode network activity distinguishes Alzheimer’s disease from healthy aging: evidence from functional MRI. Proc Natl Acad Sci USA 101:4637–4642PubMedCrossRef
go back to reference Gusnard DA, Raichle ME, Raichle ME (2001) Searching for a baseline: functional imaging and the resting human brain. Nat Rev Neurosci 2:685–694PubMedCrossRef Gusnard DA, Raichle ME, Raichle ME (2001) Searching for a baseline: functional imaging and the resting human brain. Nat Rev Neurosci 2:685–694PubMedCrossRef
go back to reference Helmich RC, Derikx LC, Bakker M, Scheeringa R, Bloem BR, Toni I (2010) Spatial remapping of cortico-striatal connectivity in Parkinson’s disease. Cereb Cortex 20:1175–1186PubMedCrossRef Helmich RC, Derikx LC, Bakker M, Scheeringa R, Bloem BR, Toni I (2010) Spatial remapping of cortico-striatal connectivity in Parkinson’s disease. Cereb Cortex 20:1175–1186PubMedCrossRef
go back to reference Herrera-Marschitz M, Goiny M, Utsumi H, Ungerstedt U (1989) Mesencephalic dopamine innervation of the frontoparietal (sensorimotor) cortex of the rat: a microdialysis study. Neurosci Lett 97:266–270PubMedCrossRef Herrera-Marschitz M, Goiny M, Utsumi H, Ungerstedt U (1989) Mesencephalic dopamine innervation of the frontoparietal (sensorimotor) cortex of the rat: a microdialysis study. Neurosci Lett 97:266–270PubMedCrossRef
go back to reference Hughes AJ, Daniel SE, Kilford L, Lees AJ (1992) Accuracy of clinical diagnosis of idiopathic Parkinson’s disease: a clinico-pathological study of 100 cases. J Neurol Neurosurg Psychiatry 55:181–184PubMedCrossRef Hughes AJ, Daniel SE, Kilford L, Lees AJ (1992) Accuracy of clinical diagnosis of idiopathic Parkinson’s disease: a clinico-pathological study of 100 cases. J Neurol Neurosurg Psychiatry 55:181–184PubMedCrossRef
go back to reference Hummelová-Fanfrdlová Z, Rektorová I, Sheardová K, Bartoš A, Línek V, Ressner P, Zapletalová J, Vyhnálek M, Hort J (2009) Česká adaptace Addenbrookského kognitivního testu. Československá psychologie 53:376–388 Hummelová-Fanfrdlová Z, Rektorová I, Sheardová K, Bartoš A, Línek V, Ressner P, Zapletalová J, Vyhnálek M, Hort J (2009) Česká adaptace Addenbrookského kognitivního testu. Československá psychologie 53:376–388
go back to reference Javoy-Agid F, Agid Y (1980) Is the mesocortical dopaminergic system involved in Parkinson’s disease? Neurology 30:1326–1330PubMed Javoy-Agid F, Agid Y (1980) Is the mesocortical dopaminergic system involved in Parkinson’s disease? Neurology 30:1326–1330PubMed
go back to reference Kelly C, De Zubicaray G, Di Martino A, Copland DA, Reiss PT, Klein DF, Castellanos FX, Milham MP, McMahon K (2009) l-Dopa modulates functional connectivity in striatal cognitive and motor networks: a double-blind placebo controlled study. J Neurosci 29:7364–7378PubMedCrossRef Kelly C, De Zubicaray G, Di Martino A, Copland DA, Reiss PT, Klein DF, Castellanos FX, Milham MP, McMahon K (2009) l-Dopa modulates functional connectivity in striatal cognitive and motor networks: a double-blind placebo controlled study. J Neurosci 29:7364–7378PubMedCrossRef
go back to reference Krajcovicova L, Mikl M, Marecek R, Rektorova I (2010) Default mode network analysis in healthy controls (pilot study). Cesk Slov Neurol N 73:517–232 Krajcovicova L, Mikl M, Marecek R, Rektorova I (2010) Default mode network analysis in healthy controls (pilot study). Cesk Slov Neurol N 73:517–232
go back to reference Li SJ, Biswal B, Li Z, Risinger R, Rainey C, Cho JK, Salmeron BJ, Stein EA (2000) Cocaine administration decreases functional connectivity in human primary visual and motor cortex as detected by functional MRI. Magn Reson Med 43:45–51PubMedCrossRef Li SJ, Biswal B, Li Z, Risinger R, Rainey C, Cho JK, Salmeron BJ, Stein EA (2000) Cocaine administration decreases functional connectivity in human primary visual and motor cortex as detected by functional MRI. Magn Reson Med 43:45–51PubMedCrossRef
go back to reference Li SJ, Li Z, Wu G, Zhang MJ, Franczak M, Antuono PG (2002) Alzheimer disease: evaluation of a functional MR imaging index as a marker. Radiology 225:253–259PubMedCrossRef Li SJ, Li Z, Wu G, Zhang MJ, Franczak M, Antuono PG (2002) Alzheimer disease: evaluation of a functional MR imaging index as a marker. Radiology 225:253–259PubMedCrossRef
go back to reference Li Y, Adali T, Calhoun VD (2007) Estimating the number of independent components for functional magnetic resonance imaging data. Hum Brain Mapp 28:1251–1266PubMedCrossRef Li Y, Adali T, Calhoun VD (2007) Estimating the number of independent components for functional magnetic resonance imaging data. Hum Brain Mapp 28:1251–1266PubMedCrossRef
go back to reference Liang M, Zhou Y, Jiang T, Liu Z, Tian L, Liu H, Hao Y (2006) Widespread functional disconnectivity in schizophrenia with resting-state functional magnetic resonance imaging. Neuroreport 17:209–213PubMedCrossRef Liang M, Zhou Y, Jiang T, Liu Z, Tian L, Liu H, Hao Y (2006) Widespread functional disconnectivity in schizophrenia with resting-state functional magnetic resonance imaging. Neuroreport 17:209–213PubMedCrossRef
go back to reference Liu Y, Wang K, Yu C, He Y, Zhou Y, Liang M, Wang L, Jiang T (2008) Regional homogeneity, functional connectivity and imaging markers of Alzheimer’s disease: a review of resting-state fMRI studies. Neuropsychologia 46:1648–1656PubMedCrossRef Liu Y, Wang K, Yu C, He Y, Zhou Y, Liang M, Wang L, Jiang T (2008) Regional homogeneity, functional connectivity and imaging markers of Alzheimer’s disease: a review of resting-state fMRI studies. Neuropsychologia 46:1648–1656PubMedCrossRef
go back to reference Mathuranath PS, Nestor PJ, Berrios GE, Rakowicz W, Hodges JR (2000) A brief cognitive test battery to differentiate Alzheimer’s disease and frontotemporal dementia. Neurology 55:1613–1620PubMed Mathuranath PS, Nestor PJ, Berrios GE, Rakowicz W, Hodges JR (2000) A brief cognitive test battery to differentiate Alzheimer’s disease and frontotemporal dementia. Neurology 55:1613–1620PubMed
go back to reference Mattay VS, Tessitore A, Callicott JH, Bertolino A, Goldberg TE, Chase TN, Hyde TM, Weinberger DR (2002) Dopaminergic modulation of cortical function in patients with Parkinson’s disease. Ann Neurol 51:156–164PubMedCrossRef Mattay VS, Tessitore A, Callicott JH, Bertolino A, Goldberg TE, Chase TN, Hyde TM, Weinberger DR (2002) Dopaminergic modulation of cortical function in patients with Parkinson’s disease. Ann Neurol 51:156–164PubMedCrossRef
go back to reference Nagano-Saito A, Leyton M, Monchi O, Goldberg YK, He Y, Dagher A (2008) Dopamine depletion impairs frontostriatal functional connectivity during a set-shifting task. J Neurosci 28(14):3697–3706 Nagano-Saito A, Leyton M, Monchi O, Goldberg YK, He Y, Dagher A (2008) Dopamine depletion impairs frontostriatal functional connectivity during a set-shifting task. J Neurosci 28(14):3697–3706
go back to reference Nagano-Saito A, Liu J, Doyon J, Dagher A (2009) Dopamine modulates default mode network deactivation in elderly individuals during Tower of London task. Neurosci Lett 458:1–5PubMedCrossRef Nagano-Saito A, Liu J, Doyon J, Dagher A (2009) Dopamine modulates default mode network deactivation in elderly individuals during Tower of London task. Neurosci Lett 458:1–5PubMedCrossRef
go back to reference Navailles S, Benazzouz A, Bioulac B, Gross C, De Deurwaerdère P (2010) High-frequency stimulation of the subthalamic nucleus and L-3, 4-dihydroxyphenylalanine inhibit in vivo serotonin release in the prefrontal cortex and hippocampus in a rat model of Parkinson’s disease. J Neurosci 30:2356–2364PubMedCrossRef Navailles S, Benazzouz A, Bioulac B, Gross C, De Deurwaerdère P (2010) High-frequency stimulation of the subthalamic nucleus and L-3, 4-dihydroxyphenylalanine inhibit in vivo serotonin release in the prefrontal cortex and hippocampus in a rat model of Parkinson’s disease. J Neurosci 30:2356–2364PubMedCrossRef
go back to reference Ng B, Palmer S, Abugharbieh R, McKeown MJ (2010) Focusing effects of l-dopa in Parkinson’s disease. Hum Brain Mapp 31:88–97PubMed Ng B, Palmer S, Abugharbieh R, McKeown MJ (2010) Focusing effects of l-dopa in Parkinson’s disease. Hum Brain Mapp 31:88–97PubMed
go back to reference Parkin SG, Gregory RP, Scott R, Bain P, Silburn P, Hall B, Boyle R, Joint C, Aziz TZ (2002) Unilateral and bilateral pallidotomy for idiopathic Parkinson’s disease: a case series of 115 patients. Mov Disord 17:682–692PubMedCrossRef Parkin SG, Gregory RP, Scott R, Bain P, Silburn P, Hall B, Boyle R, Joint C, Aziz TZ (2002) Unilateral and bilateral pallidotomy for idiopathic Parkinson’s disease: a case series of 115 patients. Mov Disord 17:682–692PubMedCrossRef
go back to reference Rabin ML, Narayan VM, Kimberg DY, Casasanto DJ, Glosser G, Tracy JI, French JA, Sperling MR, Detre JA (2004) Functional MRI predicts post-surgical memory following temporal lobectomy. Brain 127:2286–2298PubMedCrossRef Rabin ML, Narayan VM, Kimberg DY, Casasanto DJ, Glosser G, Tracy JI, French JA, Sperling MR, Detre JA (2004) Functional MRI predicts post-surgical memory following temporal lobectomy. Brain 127:2286–2298PubMedCrossRef
go back to reference Raichle ME, Snyder AZ (2007) A default mode of brain function: a brief history of an evolving idea. Neuroimage 37:1083–1090PubMedCrossRef Raichle ME, Snyder AZ (2007) A default mode of brain function: a brief history of an evolving idea. Neuroimage 37:1083–1090PubMedCrossRef
go back to reference Raichle ME, MacLeod AM, Snyder AZ, Powers WJ, Gusnard DA, Shulman GL (2001) A default mode of brain function. Proc Natl Acad Sci USA 98:676–682PubMedCrossRef Raichle ME, MacLeod AM, Snyder AZ, Powers WJ, Gusnard DA, Shulman GL (2001) A default mode of brain function. Proc Natl Acad Sci USA 98:676–682PubMedCrossRef
go back to reference Robinson S, Basso G, Soldati N, Sailer U, Jovicich L, Bruzzone L, Kryspin-Exner I, Bauer H, Moser E (2009) A resting state network in the motor control circuit of the basal ganglia. BMC Neurosci 10:137PubMedCrossRef Robinson S, Basso G, Soldati N, Sailer U, Jovicich L, Bruzzone L, Kryspin-Exner I, Bauer H, Moser E (2009) A resting state network in the motor control circuit of the basal ganglia. BMC Neurosci 10:137PubMedCrossRef
go back to reference Rogers BP, Morgan VL, Newton AT, Gore JC (2007) Assessing functional connectivity in the human brain by fMRI. Magn Reson Imaging 25:1347–1357PubMedCrossRef Rogers BP, Morgan VL, Newton AT, Gore JC (2007) Assessing functional connectivity in the human brain by fMRI. Magn Reson Imaging 25:1347–1357PubMedCrossRef
go back to reference Roggenhofer E, Fidzinski P, Bartsch J, Kurz F, Shor O, Behr J (2010) Activation of dopamine D1/D5 receptors facilitates the induction of presynaptic long-term potentiation at hippocampal output synapses. Eur J Neurosci 32:598–605PubMedCrossRef Roggenhofer E, Fidzinski P, Bartsch J, Kurz F, Shor O, Behr J (2010) Activation of dopamine D1/D5 receptors facilitates the induction of presynaptic long-term potentiation at hippocampal output synapses. Eur J Neurosci 32:598–605PubMedCrossRef
go back to reference Rowe JB, Hughes L, Ghosh BC, Eckstein D, Williams-Gray CH, Fallon S, Barker RA, Owen AM (2008) Parkinson’s disease and dopaminergic therapy—differential effects on movement, reward and cognition. Brain 131:2094–2105PubMedCrossRef Rowe JB, Hughes L, Ghosh BC, Eckstein D, Williams-Gray CH, Fallon S, Barker RA, Owen AM (2008) Parkinson’s disease and dopaminergic therapy—differential effects on movement, reward and cognition. Brain 131:2094–2105PubMedCrossRef
go back to reference Spreng RN, Grady CL (2010) Patterns of brain activity supporting autobiographical memory, prospection, and theory of mind, and their relationship to the default mode network. J Cogn Neurosci 22:1112–1123PubMedCrossRef Spreng RN, Grady CL (2010) Patterns of brain activity supporting autobiographical memory, prospection, and theory of mind, and their relationship to the default mode network. J Cogn Neurosci 22:1112–1123PubMedCrossRef
go back to reference Supekar K, Menon V, Rubin D, Musen M, Greicius MD (2008) Network analysis of intrinsic functional brain connectivity in Alzheimer’s disease. PLoS Comput Biol 4:e1000100PubMedCrossRef Supekar K, Menon V, Rubin D, Musen M, Greicius MD (2008) Network analysis of intrinsic functional brain connectivity in Alzheimer’s disease. PLoS Comput Biol 4:e1000100PubMedCrossRef
go back to reference Tomasi D, Volkow ND, Wang R, Telang F, Wang G, Chang L, Ernst T, Fowler JS (2009) Dopamine transporters in striatum correlate with deactivation in the default mode network during visuospatial attention. PLoS One 4:e6102PubMedCrossRef Tomasi D, Volkow ND, Wang R, Telang F, Wang G, Chang L, Ernst T, Fowler JS (2009) Dopamine transporters in striatum correlate with deactivation in the default mode network during visuospatial attention. PLoS One 4:e6102PubMedCrossRef
go back to reference Van Eimeren T, Monchi O, Ballanger B, Straffela AP (2009) Dysfunction of the default mode network in Parkinson disease. Arch Neurol 66:877–883PubMedCrossRef Van Eimeren T, Monchi O, Ballanger B, Straffela AP (2009) Dysfunction of the default mode network in Parkinson disease. Arch Neurol 66:877–883PubMedCrossRef
go back to reference Wang L, Zang Y, He Y, Liang M, Zhang X, Tian L, Wu T, Jiang T, Li K (2006) Changes in hippocampal connectivity in the early stages of Alzheimer’s disease: evidence from resting state fMRI. Neuroimage 31:496–504PubMedCrossRef Wang L, Zang Y, He Y, Liang M, Zhang X, Tian L, Wu T, Jiang T, Li K (2006) Changes in hippocampal connectivity in the early stages of Alzheimer’s disease: evidence from resting state fMRI. Neuroimage 31:496–504PubMedCrossRef
go back to reference Weissenbacher A, Kasess C, Gerstl F, Lanzenberger R, Moser E, Windischberger C (2009) Correlations and anticorrelations in resting-state functional connectivity MRI: a quantitative comparison of preprocessing strategies. Neuroimage 47:1408–1416PubMedCrossRef Weissenbacher A, Kasess C, Gerstl F, Lanzenberger R, Moser E, Windischberger C (2009) Correlations and anticorrelations in resting-state functional connectivity MRI: a quantitative comparison of preprocessing strategies. Neuroimage 47:1408–1416PubMedCrossRef
go back to reference Zang YF, He Y, Zhu CZ, Cao QJ, Sui MQ, Liang M, Tian LX, Jiang TZ, Wang YF (2007) Altered baseline brain activity in children with ADHD revealed by resting-state functional MRI. Brain Dev 29:83–91PubMedCrossRef Zang YF, He Y, Zhu CZ, Cao QJ, Sui MQ, Liang M, Tian LX, Jiang TZ, Wang YF (2007) Altered baseline brain activity in children with ADHD revealed by resting-state functional MRI. Brain Dev 29:83–91PubMedCrossRef
go back to reference Zhou Y, Liang M, Jiang T, Tian L, Liu Y, Liu Z, Liu H, Kuang F (2007) Functional dysconnectivity of the dorsolateral prefrontal cortex in first-episode schizophrenia using resting-state fMRI. Neurosci Lett 417:297–302PubMedCrossRef Zhou Y, Liang M, Jiang T, Tian L, Liu Y, Liu Z, Liu H, Kuang F (2007) Functional dysconnectivity of the dorsolateral prefrontal cortex in first-episode schizophrenia using resting-state fMRI. Neurosci Lett 417:297–302PubMedCrossRef
go back to reference Zhou Y, Shu N, Liu Y, Song M, Hao Y, Liu H, Yu C, Liu Z, Jiang T (2008) Altered resting-state functional connectivity and anatomical connectivity of hippocampus in schizophrenia. Schizophr Res 100:120–132PubMedCrossRef Zhou Y, Shu N, Liu Y, Song M, Hao Y, Liu H, Yu C, Liu Z, Jiang T (2008) Altered resting-state functional connectivity and anatomical connectivity of hippocampus in schizophrenia. Schizophr Res 100:120–132PubMedCrossRef
Metadata
Title
The default mode network integrity in patients with Parkinson’s disease is levodopa equivalent dose-dependent
Authors
L. Krajcovicova
M. Mikl
R. Marecek
Irena Rektorova
Publication date
01-04-2012
Publisher
Springer Vienna
Published in
Journal of Neural Transmission / Issue 4/2012
Print ISSN: 0300-9564
Electronic ISSN: 1435-1463
DOI
https://doi.org/10.1007/s00702-011-0723-5

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