Intrinsic brain activity sets the stage for expression of motivated behavior

Journal of Comparative Neurology

Volumn 493, Issue 1, 2005, Pages 167-176

  Raichle, Marcus E ^a,b,c,d   Gusnard, Debra A ^a,c  

^a WASHINGTON UNIVERSITY SCHOOL OF MEDICINE   (United States)

^b WASHINGTON UNIVERSITY SCHOOL OF MEDICINE   (United States)

^c WASHINGTON UNIVERSITY   (United States)

^d WASHINGTON UNIVERSITY IN ST LOUIS   (United States)

Author keywords

Baseline; Brain imaging; Default mode; Metabolism

Indexed keywords

APPETITE; BEHAVIOR; BRAIN FUNCTION; CONFERENCE PAPER; DRIVE; FUNCTIONAL MAGNETIC RESONANCE IMAGING; POSITRON EMISSION TOMOGRAPHY; PRIORITY JOURNAL;

ADULT; APPETITIVE BEHAVIOR; BEHAVIOR; BRAIN; BRAIN MAPPING; CEREBRAL CORTEX; DRIVE; HUMANS; MAGNETIC RESONANCE IMAGING; MOTIVATION;

EID: 27744482237     PISSN: 00219967     EISSN: None     Source Type: Journal    
DOI: 10.1002/cne.20752     Document Type: Conference Paper

References (127)

1. Ackerman RF, Finch DM, Babb TL, Engel JJ. 1984. Increased glucose utilization during long-duration recurrent inhibition of hippocampal pyramidal cells. J Neurosci 4:251-264.
2. Aguirre CK, Detre JA, Zarahn E, Alsop DC. 2002. Experimental design and the relative sensitivity of BOLD and perfusion MRI. NeuroImage 15:488-500.
3. Ames AI. 2000. CNS energy metabolism as related to function. Brain Res Rev 34:42-68.
4. Andreasen NC, O'Leary DS, Cizadlo T, Arndt S, Rezai K, Watkins GL, Ponto LLB, Hichwa RD. 1995. Remembering the past: two facets of episodic memory explored with positron emission tomography. Am J Psychiatry 152:1576-1585.
5. Arfanakis K, Cordes D, Haughton VM, Moritz CH, Quigley MA, Meyerand ME. 2000. Combining independent component analysis and correlation analysis to probe interregional connectivity in fMRI task activation datasets. Magn Reson Imaging 18:921-930.
6. Arieli A, Sterkin A, Grinvald A, Aertsent A. 1996. Dynamics of ongoing activity: explanation of the large variability in evoked cortical responses. Science 273:1868-1871.
7. Attwell D, Laughlin SB. 2001. An energy budget for signaling in the grey matter of the brain. J Cereb Blood Flow Metab 21:1133-1145.
8. Bechara A, Damasio AR, Damasio H, Anderson SW. 1994. Insensitivity to future consequences following damage to human prefrontal cortex. Cognition 50:7-15.
9. Bechara A, Damasio H, Damasio AR. 2000. Emotion, decision making and the orbitofrontal cortex. Cereb Cortex 10:295-307.
10. Binder JR, Frost JA, Hammeke TA, Bellgowan PSF, Rao SM, Cox RW. 1999. Conceptual processing during the conscious resting state: a functional MRI study. J Cogn Neurosci 11:80-93.
11. Biswal B, Yetkin F, Haughton V, Hyde J. 1995. Functional connectivity in the motor cortex of resting human brain using echo-planar MRI. Magn Reson Med 34:537-541.
12. Biswal BB, van Kylen J, Hyde JS. 1997. Simultaneous assessment of flow and BOLD signals in resting-state functional connectivity. NMR Biomed 10:165-170.
13. Blomqvist G, Seitz RJ, Sjogren I, Halldin C, Stone-Elander S, Widen L, Solin O, Haaparanta M. 1994. Regional cerebral oxidative and total glucose consumption during rest and activation studied with positron emission tomography. Acta Physiol Scand 151:29-43.
14. Brown TG. 1911. The intrinsic factors in the act of progression in the mammal. Proc R Soc Lond B 84:308-319.
15. Brown TG. 1915. On the nature of the fundamental activity of the nervous centres: together with an analysis of the conditioning of rhythmic activity in progression, and a theory of the evolution of function in the nervous system. J Physiol 48:18-46.
16. Bruns A, Eckhorn R, Jokeit H, Ebner A. 2000. Amplitude envelope correlation detects coupling amoung incoherent brain signals. NeuroReport 11:1509-1514.
17. Bush G, Luu P, Posner MI. 2000. Cognitive and emotional influences in anterior cingulate cortex. Trends Cogn Sci 4:215-222.
18. Buzsaki G, Draguhn A. 2004. Neuronal oscillations in cortical networks. Science 304:1926-1929.
19. Chatton J-Y, Pellerin L, Magistretti PJ. 2003. GABA uptake into astrocytes is not associated with significant metabolic cost: implications for brain imaging of inhibitory transmission. Proc Natl Acad Sci U S A 100:12456-12461.
20. Clark DD, Sokoloff L. 1999. Circulation and energy metabolism of the brain. In: Siegel GJ, Agranoff BW, Albers RW, Fisher SK, Uhler MD, editors. Basic neurochemistry. Molecular, cellular and medical aspects. Philadelphia: Lippincott-Raven. p 637-670.
21. Corbetta M, Shulman GL. 2002. Control of goal-directed and stimulus-driven attention in the brain. Nat Rev Neurosci 3:201-215.
22. Cordes D, Haughton VM, Arfanakis K, Wendt GJ, Turski PA, Moritz CH, Quigley MA, Meyerand ME. 2000. Mapping functionally related regions of brain with functional connectivity MR imaging. Am J Neuroradiol 21:1636-1644.
23. Cordes D, Haughton VM, Arfanakis K, Wendt GJ, Turski PA, Moritz CH, Quigley MA, Meyerand ME. 2001. Frequencies contributing to functional connectivity in the cerebral cortex in 'resting-state' data. Am J Neuroradiol 22:1326-1333.
24. Cordes D, Haughton VM, Carew JD, Arfanakis K, Maravilla K. 2002. Hierachical clustering to measure connectivity in fMRI resting-state data. Magn Reson Imaging 20:305-317.
25. Critchley HD. 2005. Neural mechanisms of autonomic, affective and cognitive integration. J Comp Neurol 493:154-166.
26. Damasio H, Grabowski T, Frank R, Galaburda AM, Damasio AR. 1994. The return of Phineas Gage: the skull of a famous patient yields clues about the brain. Science 264:1102-1105.
27. Detre JA, Wang J. 2002. Technical aspects and utility of fMRI using BOLD and ASL. Clin Neurophysiol 113:621-634.
28. Drevets WC, Raichle ME. 1998. Reciprocal suppression of regional cerebral blood flow during emotional versus higher cognitive processes: implications for interactions between emotion and cognition. Cogn Emotion 12:353-385.
29. Engel AK, Fries P, Singer W. 2001. Dynamic predictions: oscillations and synchrony in top-down processing. Nat Rev Neurosci 2:704-716.
30. Eslinger PJ, Damasio AR. 1985. Severe disturbance of higher cognition after bilateral frontal lobe ablation: patient EVR. Neurology 35:1731-1741.
31. Fiser J, Chiu C, Weliky M. 2004. Small modulation of ongoing cortical dynamics by sensory input during natural vision. Nature 431:573-578.
32. Fox PT, Raichle ME. 1986. Focal physiological uncoupling of cerebral blood flow and oxidative metabolism during somatosensory stimulation in human subjects. Proc Natl Acad Sci U S A 83:1140-1144.
33. Fox PT, Fox JM, Raichle ME, Burde RM. 1985. The role of cerebral cortex in the generation of voluntary saccades: a positron emission tomographic study. J Neurophysiol 54:348-369.
34. Fox PT, Miezin FM, Allman JM, Van Essen DC, Raichle ME. 1987a. Retinotopic organization of human visual cortex mapped with positron emission tomography. J Neurosci 7:913-922.
35. Fox PT, Pardo JV, Petersen SE, Raichle ME. 1987b. Supplementary motor and premotor responses to actual and imagined hand movements with positron emission tomography. Soc Neurosci Abstr 13:1433.
36. Fox PT, Raichle ME, Mintun MA, Dence C. 1988. Nonoxidative glucose consumption during focal physiologic neural activity. Science 241:462-464.
37. Fox MD, Snyder AZ, Vincent JL, Corbetta M, Van Essen DC, Raichle ME. 2005. The human brain is intrinsically organized into dynamic anti-correlated functional networks. Proc Natl Acad Sci U S A 102:9673-9678.
38. Fries P, Neuenschwander S, Engel AK, Goebel R, Singer W. 2001. Rapid feature selective neuronal synchronization through correlated latency shifting. Nat Neurosci 4:194-200.
39. Friston KJ. 2000a. The labile brain. I. Neuronal transients and nonlinear coupling. Philos Trans R Soc Lond B 29:215-236.
40. Friston KJ. 2000b. The labile brain. II. Transients, complexity and selection. Philos Trans R Soc Lond B 29:237-252.
41. Friston KJ. 2000c. The labile brain. III. Transients and spatio-temporal receptive fields. Philos Trans R Soc Lond B 29:253-265.
42. Friston KJ, Frith CD, Liddle PF, Dolan RJ, Lammertsma AA, Frackowiak RSJ. 1990. The relationship between global and local changes in PET scans. J Cereb Blood Flow Metab 10:458-466.
43. Fujita H, Kuwahara H, Reutens O, Gjedde A. 1999. Oxygen consumption of cerebral cortex fails to increase during continued vibrotactile stimulation. J Cereb Blood Flow Metab 19:266-271.
44. Gilden DL. 2001. Cognitive emissions of 1/f noise. Psychol Rev 108:33-56.
45. Gilden DL, Thornton T, Mallon MW. 1995. 1/f noise in human cognition. Science 267:1837-1839.
46. Greicius MD, Menon V. 2004. Default-mode activity during a passive sensory task: uncoupled from deactivation but impacting activation. J Cogn Neurosci 16:1484-1492.
47. Greicius MD, Krasnow B, Reiss AL, Menon V. 2003. Functional connectivity in the resting brain: a network analysis of the default mode hypothesis. Proc Natl Acad Sci U S A 100:253-258.
48. Grinvald A, Arieli A, Tsodyks M, Kenet T. 2003. Neuronal assemblies: single cortical neurons are obedient members of a huge orchestra. Biopolymers 68:422-436.
49. Gusnard DA, Raichle ME. 2001. Searching for a baseline: functional imaging and the resting human brain. Nat Rev Neurosci 2:685-694.
50. Gusnard DA, Akbudak E, Shulman GL, Raichle ME. 2001. Medial prefrontal cortex and self-referential mental activity: relation to a default mode of brain function. Proc Natl Acad Sci U S A 98:4259-4264.
51. Gusnard DA, Ollinger JM, Shulman GL, Cloninger CR, Price JL, Van Essen DC, Raichle ME. 2003. Persistence and brain circuitry. Proc Natl Acad Sci U S A 100:3479-3484.
52. Hampson M, Peterson BS, Skudlarski P, Gatenby JC, Gore JC. 2002. Detection of functional connectivity using temporal correlations in MR images. Hum Brain Mapp 15:247-262.
53. Hampson M, Olson IR, Leung H-C, Skudlarski P, Gore JC. 2004. Changes in functional connectivity of human MT/V5 with visual motion input. NeuroReport 15:1315-1319.
54. Ingvar DH. 1979. "Hyperfrontal" distribution of the cerebral grey matter flow in resting wakefulness; on the functional anatomy of the conscious state. Acta Neurol Scand 60:12-25.
55. James W. 1890. Principles of psychology. New York: Henry Holt.
56. Jiang T, He Y, Zang Y, Weng X. 2004. Modulation of functional connectivity during the resting state and the motor task. Hum Brain Mapp 22:63-71.
57. Kenet T, Bibitchkov D, Tsodyks M, Grinvald A, Arieli A. 2003. Spontaneously emerging cortical representations of visual attributes. Nature 425:954-956.
58. Kiviniemi V, Jauhiainen J, Tervonen O, Paakko E, Oikarinen J, Vainionpaa V, Rantala H, Biswal BB. 2000. Slow vasomotor fluctuation in fMRI of anesthetized child brain. Magn Reson Med 44:373-378.
59. Kording KP, Wolpert DM. 2004. Bayesian integration in sensorimotor learning. Nature 427:244-247.
60. Kwong KK, Belliveau JW, Chesler DA, Goldberg IE, Weiskoff RM, Poncelet BP, Kennedy DN, Hoppel BE, Cohen MS, Turner R, Cheng HM, Brady TJ, Rosen BR. 1992. Dynamic magnetic resonance imaging of human brain activity during primary sensory stimulation. Proc Natl Acad Sci U S A 89:5675-5679.
61. Laufs H, Krakow K, Sterzer P, Egger E, Beyerle A, Salek-Haddadi A, Kleinschmidt A. 2003. Electroencephalographic signatures of attentional and cognitive default modes in spontaneous brain activity fluctuations at rest. Proc Natl Acad Sci U S A 100:11053-11058.
62. Lennie P. 2003. The cost of cortical computation. Curr Biol 13:493-497.
63. Lennox WG. 1931. The cerebral circulation. XV. Effect of mental work. Arch Neurol Psychiatry 26:725-730.
64. Leopold DA, Murayama Y, Logothetis NK. 2003. Very slow activity fluctuations in monkey visual cortex: implications for functional brain imaging. Cereb Cortex 13:423-433.
65. Llinas R. 1974. La forme et la fonction des cellules nerveuses. Recherche 5:232-240.
66. Llinas R. 1988. The intrinsic electrophysiological properties of mammalian neurons: insights into central nervous system function. Science 242:1654-1664.
67. Llinas R. 2001. I of the vortex: from neurons to self. Cambridge, MA: MIT Press.
68. Llinas R, Pare D. 1991. Of dreaming and wakefulness. Neuroscience 44:521-535.
69. Lowe MJ, Mock BJ, Sorenson JA. 1998. Functional connectivity in single and multislice echoplanar imaging using resting-state fluctuations. NeuroImage 7:119-132.
70. Lowe MJ, Dzemidzic M, Lurito JT, Mathews VP, Phillips MD. 2000. Correlations in low-frequency BOLD fluctuations reflect cortico-cortical connections. NeuroImage 12:582-587.
71. Lowe MJ, Phillips MD, Lurito JT, Mattson DL, Dzemidzic M, Mathews VP. 2002. Multiple sclerosis: low-frequency temporal blood oxygen level-dependent fluctuations indicate reduced functional connectivity - initial results. Radiology 224:184-192.
72. Madsen PL, Hasselbalch SG, Hagemann LP, Olsen KS, Bulow J, Holm S, Wildschiodtz G, Paulson OB, Lassen NA. 1995. Persistent resetting of the cerebral oxygen/glucose uptake ratio by brain activation: evidence obtained with the Kety-Schmidt technique. J Cereb Blood Flow Metab 15:485-491.
73. Martin A. 1999. Automatic activation of the medial temporal lobe during encoding: lateralized influences of meaning and novelty. Hippocampus 9:62-70.
74. Massimini M, Huber R, Ferrarelli F, Tononi G. 2004. The sleep slow oscillation as a traveling wave. J Neurosci 24:6862-6870.
75. Mayberg HS. 1997. Limbic-cortical dysregulation: a proposed model of depression. J Neuropsychiatry 9:471-481.
76. Mazoyer B, Zago L, Mellet E, Bricogne S, Etard O, Houde O, Crivello F, Joliot M, Petit L, Tzourio-Mazoyer N. 2001. Cortical networks for working memory and executive functions sustain the conscious resting state in man. Brain Res Bull 54:287-298.
77. McCasland JS, Hibbard LS. 1997. GABAergic neurons in barrel cortex show strong, whisker-dependent metabolic activation during normal behavior. J Neurosci 17:5509-5527.
78. Mintun M, Vlassenko AG, Shulman GI, Snyder AZ. 2002. Time-related increase of oxygen utilization in continuously activated human visual cortex. NeuroImage 16:531-537.
79. Nyberg L, McIntosh AR, Cabeza R, Nilsson L-G, Houle S, Habib R, Tulving E. 1996. Network analysis of positron emission tomography regional cerebral blood flow data. J Neurosci 16:3753-3759.
80. Obrig H, Neufang M, Wenzel R, Kohl M, Steinbrink J, Einhaupl K, Villringer A. 2000. Spontaneous low frequency oscillations of cerebral hemodynamics and metabolism in human adults. NeuroImage 12:623-639.
81. Ochsner KN, Gross JJ. 2005. The cognitive control of emotion. Trends Cogn Sci 9:242-249.
82. Ogawa S, Lee TM. 1990. Magnetic resonance imaging of blood vessels at high fields: in vivo and in vitro measurements and image simulation. Magn Reson Med 16:9-18.
83. Ogawa S, Lee TM, Kay AR, Tank DW. 1990. Brain magnetic resonance imaging with contrast dependent on blood oxygenation. Proc Natl Acad Sci U S A 87:9868-9872.
84. Ogawa S, Tank DW, Menon R, Ellermann JM, Kim S-G, Merkle H, Ugurbil K. 1992. Intrinsic signal changes accompanying sensory stimulation: functional brain mapping with magnetic resonance imaging. Proc Natl Acad Sci U S A 89:5951-5955.
85. Olshausen BA. 2003. Principles of image representation in visual cortex. In: Chalupa LM, Werner JS, editors. The visual neurosciences. Cambridge, MA: MIT Press. p 1603-1615.
86. Öngür D, Ferry AT, Price JL. 2003. Architectonic subdivisions of the human orbital and medial prefontal cortex. J Comp Neurol 460:425-449.
87. Patel AB, de Graaf RA, Mason GF, Rothman DL, Shulman RG, Behar KL. 2005. The contribution of GAGA to glutamate/glutamine cycling and energy metabolism in the rat cortex in vivo. Proc Natl Acad Sci U S A 102:5588-5593.
88. Patterson JC, Ungerleider LG, Bandettini PA. 2002. Task-independent functional brain activity correlation with skin conductance changes: an fMRI study. NeuroImage 17:1797-1806.
89. 2* dependence of low frequency functional connectivity. NeuroImage 16:985-992.
90. Peltier SJ, Polk TA, Noll DC. 2003. Detecting low-frequency functional connectivity in fMRI using a self-organizing map (SOM) algorithm. Hum Brain Mapp 20:220-226.
91. Petersen SE, Fox PT, Posner MI, Mintun M, Raichle ME. 1988. Positron emission tomographic studies of the cortical anatomy of single-word processing. Nature 331:585-589.
92. Purdon PL, Weisskoff RM. 1998. Effect of temporal autocorrelation due to physiological noise and stimulus paradigm on voxel-level false-positive rates in fMRI. Hum Brain Mapp 6:239-249.
93. Quigley MA, Cordes D, Turski PA, Moritz CH, Haughton VM, Seth R, Meyerand ME. 2003. Role of the corpus callosum in functional connectivity. Am J Neuroradiol 24:208-212.
94. Raichle ME. 2000. A brief history of human functional brain mapping. In: Toga AW, Mazziotta JC, editors. Brain mapping. The systems. San Diego: Academic Press. p 33-75.
95. Raichle ME, Fiez JA, Videen TO, MacLeod AM, Pardo JV, Fox PT, Petersen SE. 1994. Practice-related changes in human brain functional anatomy during nonmotor learning. Cereb Cortex 4:8-26.
96. Raichle ME, MacLeod AM, Snyder AZ, Powers WJ, Gusnard DA, Shulman GL. 2001. A default mode of brain function. Proc Natl Acad Sci U S A 98:676-682.
97. Ress D, Heeger DJ. 2003. Neuronal correlates of perception in early visual cortex. Nat Neurosci 6:414-420.
98. Ress D, Backus BT, Heeger DJ. 2000. Activity in primary visual cortex predicts performance in a visual detection task. Nat Neurosci 3:940-945.
99. Roland PE, Eriksson L, Stone-Elander S, Widen L. 1987. Does mental activity change the oxidative metabolism of the brain. J Neurosci 7:2373-2389.
100. Roland PE, Eriksson L, Widen L, Stone-Elander S. 1989. Changes in regional cerebral oxidative metabolism induced by tactile learning and recognition in man. Eur J Neurosci 1:3-17.
101. Shulman GL, Fiez JA, Corbetta M, Buckner RL, Miezin FM, Raichle ME, Petersen SE. 1997. Common blood flow changes across visual tasks. II. Decreases in cerebral cortex. J Cogn Neurosci 9:648-663.
102. Shulman RG, Hyder F, Rothman DL. 2001. Cerebral energetics and the glycogen shunt: neurochemical basis of functional imaging. Proc Natl Acad Sci U S A 98:6417-6422.
103. Shulman RG, Rothman DL, Behar KL, Hyder F. 2004. Energetic basis of brain activity: implications for neuroimaging. Trends Neurosci 27:489-495.
104. 13C NMR measurements of cerebral glutamate synthesis as evidence for glutamate-glutamine cycling. Proc Natl Acad Sci U S A 94:2699-2704.
105. Sibson NR, Dhankhar A, Mason GF, Rothman DL, Behar KL, Shulman RG. 1998. Stoichiometric coupling of brain glucose metabolism and glutamatergic neuronal activity. Proc Natl Acad Sci U S A 95:316-321.
106. Siesjo BK. 1978. Brain energy metabolism. New York: John Wiley & Sons.
107. Simpson JR Jr, Ongur D, Akbudak E, Conturo TE, Ollinger JM, Snyder AZ, Gusnard DA, Raichle ME. 2000. The emotional modulation of cognitive processing: an fMRI study. J Cogn Neurosci 12(Suppl 2):157-170.
108. Simpson JRJ, Drevets WC, Snyder AZ, Gusnard DA, Raichle ME. 2001a. Emotion-induced changes in human medial prefrontal cortex. II. During anticipatory anxiety. Proc Natl Acad Sci U S A 98:688-691.
109. Simpson JRJ, Snyder AZ, Gusnard DA, Raichle ME. 2001b. Emotion-induced changes in human medial prefrontal cortex. I. During cognitive task performance. Proc Natl Acad Sci U S A 98:683-687.
110. Sokoloff L, Mangold R, Wechsler R, Kennedy C, Kety SS. 1955. The effect of mental arithmetic on cerebral circulation and metabolism. J Clin Invest 34:1101-1108.
111. Stark CEL, Squire LR. 2001. When zero is not zero: the problem of ambiguous baseline conditions in fMRI. Proc Natl Acad Sci U S A 98:12760-12766.
112. Steriade M. 2001. Impact of network activities on neuronal properties in corticothalamic systems. J Neurophysiol 86:1-39.
113. Sun FT, Miller LM, D'Esposito M. 2004. Measuring interregional functional connectivity using coherence and partial coherence analyses of fMRI data. Neuroimage 21:647-658.
114. Van de Ven VG, Formisano E, Prvulovic D, Roeder CH, Linden DEJ. 2004. Functional connectivity as revealed by spatial independent component analysis of fMRI measurements during rest. Hum Brain Mapp 22:165-178.
115. Van Essen DC, Harwell J, Hanlon D, Dickson J, Snyder AZ, Cox R. 2002. Mapping functional activation patterns onto surface-based atlases of cerebral and cerebellar cortex. In: Organization for human brain mapping. Sendai, Japan: Academic Press.
116. Van Orden GC, Holden JG, Tiervey MT. 2005. Human cognition and 1/f scaling. J Exp Psychol Gen 134:117-123.
117. Vanhatalo S, Palva JM, Holmes MD, Miller JW, Voipio J, Kaila K. 2004. Infraslow oscillations modulate excitability and interictal epileptic activity in the human cortex during sleep. Proc Natl Acad Sci U S A 101:5053-5057.
118. Varella F, Lachaux J-P, Rodriguez E, Martinerie J. 2001. The brainweb: phase synchronization and large-scale integration. Nat Rev Neurosci 2:229-239.
119. Vern BA, Schuette WH, Leheta B, Juel VC, Radulovacki M. 1988. Low-frequency oscillations of cortical oxidative metabolism in waking and sleep. J Cereb Blood Flow Metabol 8:215-226.
120. Wagenmakers AJ. 1993. Branched-chain amino acid supplementation during trekking at high altitude [Letter]. Eur J Appl Physiol 67:92-93.
121. Wagner AD, Schacter DL, Rotte M, Koutstaal W, Maril A, Dale AM, Rosen BR, Buckner RL. 1998. Building memories: remembering and forgetting of verbal experiences as predicted by brain activity. Science 281:1188-1191.
122. Waites AB, Stanislavsky A, Abbott DF, Jackson GD. 2005. Effect of prior cognitive state on resting state networks measured with functional. connectivity. Hum Brain Mapp 24:59-68.
123. Waldvogel D, Van Gelderen P, Muellbacher W, Ziemann U, Immisch I, Hallett M. 2000. The relative metabolic demand of inhibition and excitation. Nature 406:995-998.
124. Weisskoff RM, Baker J, Belliveau J, Davis TL, Kwong KK, Cohen MS, Rosen BR. 1993. Power spectrum analysis of functionally-weighted MR data: what's in the noise? Soc Magn Reson Abstr 7.
125. Williams LM, Brammer MJ, Skerrett D, Lagopoulos J, Rennie C, Kozek K, Olivieri G, Peduto A, Gordon E. 2000. The neural correlates of orienting: an integration of fMRI and skin conductance orienting. NeuroReport 11:3011-3015.
126. Xiong J, Parsons LM, Gao JH, Fox PT. 1999. Interregional connectivity to primary motor cortex revealed using MRI resting state images. Hum Brain Mapp 8:151-156.
127. Zarahn E, Aguirre GK, D'Esposito M. 1997. Empirical analyses of BOLD fMRI statistics. I. Spatially unsmoothed data collected under null-hypothesis conditions. NeuroImage 5:179-197.