Skip to main navigation menu Skip to main content Skip to site footer

Narrative Review

Vol. 6 No. 2 (2002)

Aging of the Cerebral Cortex

  • Tak Pan Wong, Ph.D.
DOI
https://doi.org/10.26443/mjm.v6i2.688
Submitted
November 8, 2020
Published
2020-12-01

Abstract

Significant structural trimming of neuronal structures in the cerebral cortex has long been considered as a primary cause of various age-related cortical dysfunctions. While recent findings provided additional data to support this notion, current understanding of cortical neuronal functions in aging also revealed the relationship of neuronal plasticity and imbalances between different neurotransmitter systems with the formation of age-related cortical dysfunctions. Manipulating these age-related alterations in neuronal function may be a novel therapeutic approach in the treatment of cortical dysfunctions in aging. This review will focus our current understanding of age-related changes in neuronal structures and functions in the cerebral cortex. Implication of these age-related alterations will be discussed.

References

  1. Brody H. Organization of the cerebral cortex, III, A study of aging in the human cerebral cortex. Journal of Comparative Neurology. 1955;102:511-556.
  2. Dekaban AS. Changes in brain weights during the span of human life: relation of brain weights to body heights and body weights. Annals of Neurology. 1978;4:345-356.
  3. Matsumae M, Kikinis R, Morocz IA et al. Age-related changes in intracranial compartment volumes in normal adults assessed by magnetic resonance imaging. Journal of Neurosurgery. 1996;84:982-991.
  4. Raz N, Briggs SD, Marks W, Acker JD. Age-related deficits in generation and manipulation of mental images: II. The role of dorsolateral prefrontal cortex. Psychology and Aging. 1999;14:436-444.
  5. Ho KC, Roessmann U, Straumfjord JV, Monroe G. Analysis of brain weight. I. Adult brain weight in relation to sex, race, and age. Archives of pathology and laboratory medicine. 1980;104:635-639.
  6. Haug H. The aging human cerebral cortex: Morphometry of areal differences and their functional meaning. In: Dani SU, Hori A, Walter GF, eds. Principles of neural aging. Amsterdam: Elsevier Science; 1997:247-261.
  7. Foundas AL, Zipin D, Browning CA. Age-related changes of the insular cortex and lateral ventricles: conventional MRI volumetric measures. Journal of Neuroimaging. 1998;8:216- 221.
  8. DeKosky ST, Bass NH. Effects of aging and senile dementia on the microchemical athology of human cerebral cortex. In: Amaducci L, Davison AN, Antuono P, eds. Aging. New York: Raven Press; 1980:33-37.
  9. Haug H, Barmwater U, Eggers R, Fischer D, Kuhel S, Sass NL. Anatomical changes in aging brain: morphometric analysis of the human presencephalon. In: Cervos-Navarro J, Sarkander HI, eds. Aging. New York: Raven Press; 1983:1-12.
  10. Henderson G, Tomlinson BE, Gibson PH. Cell counts in human cerebral cortex in normal adults throughout life using an image analysing computer. Journal of the Neurological Sciences. 1980;46:113-136.
  11. Terry RD, Deteresa R, Hansen LA. Neocortical cell counts in normal human adult aging. Annals of Neurology. 1987;21:530- 539.
  12. Brody H. Aging of the vertebrate brain. In: Rockstein M, Sussman HM, eds. Development and aging in the nervous system. New York: Academic Press; 1973:121-133.
  13. Meier-Ruge W, Hunziker O, Iwangoff P, Reichlmleter K, Sandoz P. Alteration of morphological and neurochemical parameters of the brain due to normal aging. In: Nandy K, ed. Senile dementia: Biochemical approach. New York: Elsevier-North Holland; 1978:33-44.
  14. Haug H, Knebel G, Mecke E, Orun C, Sass NL. The aging of cortical cytoarchitectonics in the light of stereological investigations. Progress in Clinical and Biological Research. 1981;59B:193-197.
  15. Haug H, Eggers R. Morphometry of the human cortex cerebri and corpus striatum during aging. Neurobiology of Aging. 1991;12:336-338.
  16. Peters A. The absence of significant neuronal loss from cerebral cortex with age. Neurobiology of Aging. 1993;14:657-658.
  17. Gómez-Isla T, Price JL, McKeel DW, Jr., Morris JC, Growdon JH, Hyman BT. Profound loss of layer II entorhinal cortex neurons occurs in very mild Alzheimer's disease. Journal of Neuroscience. 1996;16:4491-4500.
  18. Wickelgren I. For the cortex, neuron loss may be less than thought. Science. 1996;273:48-50.
  19. Guttmann CR, Jolesz FA, Kikinis R et al. White matter changes with normal aging. Neurology. 1998;50:972-978.
  20. Gunning-Dixon FM, Raz N. The cognitive correlates of white matter abnormalities in normal aging: a quantitative review. Neuropsychology. 2000;14:224-232.
  21. Peters A, Moss MB, Sethares C. Effects of aging on myelinated nerve fibers in monkey primary visual cortex. Journal of Comparative Neurology. 2000;419:364-376.
  22. Feldman ML, Peters A. Ballooning of myelin sheaths in normally aged macaques. Journal of Neurocytology. 1998;27:605-614.
  23. Lintl P, Braak H. Loss of intracortical myelinated fibers: a distinctive age-related alteration in the human striate area. Acta Neuropathologica (Berl). 1983;61:178-182.
  24. Peters A. Age-related changes in oligodendrocytes in monkey cerebral cortex. Journal of Comparative Neurology. 1996;371:153-163.
  25. Mungai JM. Dendritic patterns in the somatic sensory cortex of the cat. Journal of Anatomy. 1967;101:403-418.
  26. Sholl DA. The surface area of cortical neurons. Journal of Anatomy. 1955;89:571-572.
  27. White EL. Cortical Circuits: Synaptic Organization of the Cerebral Cortex Structure, Function, and Theory. Boston: Birkhauser; 1989.
  28. De Felipe J, Farinas I. The pyramidal neuron of the cerebral cortex: morphological and chemical characteristics of the synaptic inputs. Progress in Neurobiology. 1992;39:563-607.
  29. Scheibel ME, Lindsay RD, Tomiyasu U, Scheibel AB. Progressive dendritic changes in aging human cortex. Experimental Neurology. 1975;47:392-403.
  30. Mervis R. Structural alterations in neurons of aged canine neocortex: a Golgi study. Experimental Neurology. 1978;62:417-432.
  31. Anderson B, Rutledge V. Age and hemisphere effects on dendritic structure. Brain. 1996;119:1983-1990.
  32. Vaughan DW. Age-related deterioration of pyramidal cell basal dendrites in rat auditory cortex. Journal of Comparative Neurology. 1977;171:501-515.
  33. Jacobs B, Scheibel AB. A quantitative dendritic analysis of Wernicke's area in humans. I. Lifespan changes. Journal of Comparative Neurology. 1993;327:83-96.
  34. de Brabander JM, Kramers RJ, Uylings HB. Layer-specific dendritic regression of pyramidal cells with ageing in the human prefrontal cortex. European Journal of Neuroscience. 1998;10:1261-1269.
  35. Nakamura S, Akiguchi I, Kameyama M, Mizuno N. Age-related changes of pyramidal cell basal dendrites in layers III and V of human motor cortex: a quantitative Golgi study. Acta Neuropathologica. 1985;65:281-284.
  36. Coleman PD, Flood DG. Net dendritic stability of layer II pyramidal neurons in F344 rat entorhinal cortex from 12 to 37 months. Neurobiology of Aging. 1991;12:535-541.
  37. Leuba G. Aging of dendrites in the cerebral cortex of the mouse. Neuropathology and Applied Neurobiology. 1983;9:467-475.
  38. Jacobs B, Driscoll L, Schall M. Life-span dendritic and spine changes in areas 10 and 18 of human cortex: a quantitative Golgi study. Journal of Comparative Neurology. 1997;386:661-680.
  39. Terry RD, Masliah E, Salmon DP et al. Physical basis of cognitive alterations in Alzheimer's disease: synapse loss is the major correlate of cognitive impairment. Annals of Neurology. 1991;30:572-580.
  40. DeKosky ST, Scheff SW. Synapse loss in frontal cortex biopsies in Alzheimer's disease: correlation with cognitive severity. Annals of Neurology. 1990;27:457-464.
  41. Adams I, Jones DG. Quantitative ultrastructural changes in rat cortical synapses during early-, mid- and late-adulthood. Brain Research. 1982;239:349-363.
  42. Zecevic N, Bourgeois JP, Rakic P. Changes in synaptic density in motor cortex of rhesus monkey during fetal and postnatal life. Developmental Brain Research. 1989;50:11-32.
  43. Adams I. Comparison of synaptic changes in the precentral and postcentral cerebral cortex of aging humans: a quantitative ultrastructural study. Neurobiology of Aging. 1987;8:203-212.
  44. Huttenlocher PR. Synaptic density in human frontal cortex - developmental changes and effects of aging. Brain Research. 1979;163:195-205.
  45. Markus EJ, Petit TL. Neocortical synaptogenesis, aging, and behavior: lifespan development in the motor-sensory system of the rat. Experimental Neurology. 1987;96:262-278.
  46. Curcio CA, McNelly NA, Hinds JW. Aging in the rat olfactory system: relative stability of piriform cortex contrasts with changes in olfactory bulb and olfactory epithelium. Journal of Comparative Neurology. 1985;235:519-528.
  47. Adams I. Plasticity of the synaptic contact zone following loss of synapses in the cerebral cortex of aging humans. Brain Research. 1987;424:343-351.
  48. Timiras PS, Hudson DB, Oklund S. Changes in central nervous system free amino acids with development and aging. Progress in Brain Research. 1973;40:267-275.
  49. Krnjevic K, Phillis JW. Acetylcholine-sensitive cells in the cerebral cortex. Journal of Physiology. 1963;166:296-327.
  50. Jasper H, Khan R, Elliot K. Amino acids released from the cerebral cortex in relation to its state of activation. Science. 1965;147:1448-1449.
  51. Baughman RW, Gilbert CD. Aspartate and glutamate as possible neurotransmitters in the visual cortex. Journal of Neuroscience. 1981;1:427-439.
  52. Peinado JM, Mora F. Glutamic acid as a putative transmitter of the interhemispheric corticocortical connections in the rat. Journal of Neurochemistry. 1986;47:1598-1603.
  53. Krnjevic K. Chemical Nature of Synaptic Transmission in Vertebrates. Physiological Reviews. 1974;54:418-540.
  54. Streit P. Glutamate and aspartate as transmitter candidates for systems of the cerebral cortex. In: Peters A, Jones EG, eds. Cerebral Cortex. New York and London: Plenum Press;
  55. :119-143.
  56. Seeburg PH. The TiPS/TINS lecture: the molecular biology of mammalian glutamate receptor channels. Trends in Pharmacological Sciences. 1993;14:297-303.
  57. Hollmann M, Heinemann S. Cloned glutamate receptors. Annual Review of Neuroscience. 1994;17:31-108.
  58. Dawson R, Jr., Wallace DR, Meldrum MJ. Endogenous glutamate release from frontal cortex of adult and aged rats. Neurobiology of Aging. 1989;10:665-668.
  59. Banay-Schwartz M, Lajtha A, Palkovits M. Changes with aging in the levels of amino acids in rat CNS structural elements. I. Glutamate and related amino acids. Neurochemical Research. 1989;14:555-562.
  60. Cobo M, Exposito I, Porras A, Mora F. Release of amino acid neurotransmitters in different cortical areas of conscious adult and aged rats. Neurobiology of Aging. 1992;13:705-709.
  61. Kornhuber ME, Kornhuber J, Retz W, Riederer P. L-glutamate and L-aspartate concentrations in the developing and aging human putamen tissue. Journal of Neural Transmission - General Section. 1993;93:145-150.
  62. Cobo M, Exposito I, Mora F. Aging, prefrontal cortex, and amino acid neurotransmitters: differential effects produced by electrical stimulation. Neurobiology of Aging. 1993;14:187- 190.
  63. Saransaari P, Oja SS. Age-related changes in the uptake and release of glutamate and aspartate in the mouse brain. Mechanisms of Ageing and Development. 1995;81:61-71.
  64. Carpenter MK, Parker I, Miledi R. Messenger RNAs coding for receptors and channels in the cerebral cortex of adult and aged rats. Molecular Brain Research. 1992;13:1-5.
  65. Wenk GL, Pierce DJ, Struble RG, Price DL, Cork LC. Age- related changes in multiple neurotransmitter systems in the monkey brain. Neurobiology of Aging. 1989;10:11-19.
  66. Wenk GL, Walker LC, Price DL, Cork LC. Loss of NMDA, but not GABAA, binding in the brains of aged rats and monkeys. Neurobiology of Aging. 1991;12:93-98.
  67. Cohen SA, Muller WE. Age-related alterations of NMDA- receptor properties in the mouse forebrain: partial restoration by chronic phosphatidylserine treatment. Brain Research. 1992;584:174-180.
  68. Kito S, Miyoshi R, Nomoto T. Influence of age on NMDA receptor complex in rat brain studied by in vitro autoradiography. Journal of Histochemistry and Cytochemistry. 1990;38:1725-1731.
  69. Magnusson KR. Declines in mRNA expression of different subunits may account for differential effects of aging on agonist and antagonist binding to the NMDA receptor. Journal of Neuroscience. 2000;20:1666-1674.
  70. Priestley T, Laughton P, Myers J, Le Bourdelles B, Kerby J, Whiting PJ. Pharmacological properties of recombinant human N-methyl-D-aspartate receptors comprising NR1a/NR2A and NR1a/NR2B subunit assemblies expressed in permanently transfected mouse fibroblast cells. Molecular Pharmacology. 1995;48:841-848.
  71. Gallagher MJ, Huang H, Pritchett DB, Lynch DR. Interactions between ifenprodil and the NR2B subunit of the N-methyl-D- aspartate receptor. Journal of Biological Chemistry. 1996;271:9603-9611.
  72. Monyer H, Sprengel R, Schoepfer R et al. Heteromeric NMDA receptors: molecular and functional distinction of subtypes. Science. 1992;256:1217-1221.
  73. Tamaru M, Yoneda Y, Ogita K, Shimizu J, Nagata Y. Age- related decreases of the N-methyl-D-aspartate receptor complex in the rat cerebral cortex and hippocampus. Brain Research. 1991;542:83-90.
  74. Magnusson KR, Cotman CW. Age-related changes in excitatory amino acid receptors in two mouse strains. Neurobiology of Aging. 1993;14:197-206.
  75. Magnusson KR. Aging of glutamate receptors: correlations between binding and spatial memory performance in mice. Mechanisms of Ageing and Development. 1998;104:227-248.
  76. Le Jeune H, Cecyre D, Rowe W, Meaney MJ, Quirion R. Ionotropic glutamate receptor subtypes in the aged memory- impaired and unimpaired Long-Evans rat. Neuroscience. 1996;74:349-363.
  77. Kitamura Y, Zhao XH, Ohnuki T, Takei M, Nomura Y. Age- related changes in transmitter glutamate and NMDA receptor/channels in the brain of senescence-accelerated mouse. Neuroscience Letters. 1992;137:169-172.
  78. Peterson C, Cotman CW. Strain-dependent decrease in glutamate binding to the N-methyl-D-aspartic acid receptor during aging. Neuroscience Letters. 1989;104:309-313.
  79. Krnjevic K. Role of GABA in cerebral cortex. Canadian Journal of Physiology and Pharmacology. 1997;75:439-451.
  80. Meinecke DL, Peters A. GABA immunoreactive neurons in rat visual cortex. Journal of Comparative Neurology. 1987;261:388-404.
  81. Ribak CE. Aspinous and sparsely-spinous stellate neurons in the visual cortex of rats contain glutamic acid decarboxylase. Journal of Neurocytology. 1978;7:461-478.
  82. Penny GR, Afsharpour S, Kitai ST. The glutamate decarboxylase-, leucine enkephalin-, methionine enkephalin- and substance P-immunoreactive neurons in the neostriatum of the rat and cat: evidence for partial population overlap. Neuroscience. 1986;17:1011-1045.
  83. Tohgi H, Takahashi S, Abe T. The effect of age on concentrations of monoamines, amino acids, and their related substances in the cerebrospinal fluid. Journal of Neural Transmission - Parkinsons Disease and Dementia Section. 1993;5:215-226.
  84. Hare TA, Wood JH, Manyam BV, Gerner RH, Ballenger JC, Post RM. Central nervous system gamma-aminobutyric acid activity in man. Relationship to age and sex as reflected in CSF. Archives of Neurology. 1982;39:247-249.
  85. Wheeler DD, Ondo JG. Endogenous GABA concentration in cortical synaptosomes from young and aged rats. Experimental Gerontology. 1986;21:79-85.
  86. Wheeler DD. Aging of membrane transport mechanisms in the central nervous system. GABA transport in rat cortical synaptosomes. Experimental Gerontology. 1982;17:71-85.
  87. Krzywkowski P, Potier B, Billard JM, Dutar P, Lamour Y. Synaptic mechanisms and calcium binding proteins in the aged rat brain. Life Sciences. 1996;59:421-428.
  88. Mountjoy CQ, Rossor MN, Iversen LL, Roth M. Correlation of cortical cholinergic and GABA deficits with quantitative neuropathological findings in senile dementia. Brain. 1984;107:507-518.
  89. Rossor MN, Garrett NJ, Johnson AL, Mountjoy CQ, Roth M, Iversen LL. A post-mortem study of the cholinergic and GABA systems in senile dementia. Brain. 1982;105:313-330.
  90. Govoni S, Memo M, Saiani L, Spano PF, Trabucchi M. Impairment of brain neurotransmitter receptors in aged rats. Mechanisms of Ageing and Development. 1980;12:39-46.
  91. Nabeshima T, Yamada K, Hayashi T et al. Changes in muscarinic cholinergic, PCP, GABAA, D1, and 5-HT2A receptor binding, but not in benzodiazepine receptor binding in the brains of aged rats. Life Sciences. 1994;55:1585-1593.
  92. Erdö SL, Wolff JR. Age-related loss of t- [35S]butylbicyclophosphorothionate binding to the gamma- aminobutyric acidA receptor-coupled chloride ionophore in rat cerebral cortex. Journal of Neurochemistry. 1989;53:648-651.
  93. Mhatre MC, Ticku MK. Aging related alterations in GABAA receptor subunit mRNA levels in Fischer rats. Molecular Brain Research. 1992;14:71-78.
  94. Gutierrez A, Khan ZU, Miralles CP, De Blas AL. Altered expression of gamma 2L and gamma 2S GABAA receptor subunits in the aging rat brain. Molecular Brain Research. 1996;35:91-102.
  95. Gutierrez A, Khan ZU, Miralles CP et al. GABAA receptor subunit expression changes in the rat cerebellum and cerebral cortex during aging. Molecular Brain Research. 1997;45:59-70.
  96. Ruano D, Machado A, Vitorica J. Absence of modifications of the pharmacological properties of the GABAA receptor complex during aging, as assessed in 3- and 24-month-old rat cerebral cortex. European Journal of Pharmacology. 1993;246:81-87.
  97. Tsang CC, Speeg KV, Jr., Wilkinson GR. Aging and benzodiazepine binding in the rat cerebral cortex. Life Sciences. 1982;30:343-346.
  98. Turgeon SM, Albin RL. GABAB binding sites in early adult and aging rat brain. Neurobiology of Aging. 1994;15:705-711.
  99. Mhatre MC, Fernandes G, Ticku MK. Aging reduces the mRNA of alpha 1 GABAA receptor subunit in rat cerebral cortex. European Journal of Pharmacology. 1991;208:171-174.
  100. Timiras PS. Aging of the nervous system: functional changes. In: Timiras PS, ed. Physiological basis of aging and geriatrics. Florida: CRC Press, Inc.; 1994:103-114.
  101. Joyce CA, Paller KA, McIsaac HK, Kutas M. Memory changes with normal aging: behavioral and electrophysiological measures. Psychophysiology. 1998;35:669-678.
  102. Nielsen-Bohlman L, Knight RT. Prefrontal alterations during memory processing in aging. Cerebral Cortex. 1995;5:541-549.
  103. Liu FJ, Wu X, Yu MX. ERPs of characters of Chinese words compared with tone and picture stimuli in adolescents and aged persons. Clinical Electroencephalography. 1998;29:146-152.
  104. Shaw NA, Cant BR. Age-dependent changes in the latency of the pattern visual evoked potential. Electroencephalography and Clinical Neurophysiology. 1980;48:237-241.
  105. Valjakka A, Sirvio J, Pitkanen A, Riekkinen PJ. Brain amines and neocortical EEG in young and aged rats. Comparative Biochemistry and Physiology Part C, Pharmacology, Toxicology and Endocrinology. 1990;96:299-304.
  106. Buzsaki G, Bickford RG, Armstrong DM et al. Electric activity in the neocortex of freely moving young and aged rats. Neuroscience. 1988;26:735-744.
  107. Simpson DM, Erwin CW. Evoked potential latency change with age suggests differential aging of primary somatosensory cortex. Neurobiology of Aging. 1983;4:59-63.
  108. Trott CT, Friedman D, Ritter W, Fabiani M. Item and source memory: differential age effects revealed by event-related potentials. Neuroreport. 1997;8:3373-3378.
  109. Rypma B, D'Esposito M. Isolating the neural mechanisms of age-related changes in human working memory. Nature Neuroscience. 2000;3:509-515.
  110. Yousem DM, Maldjian JA, Hummel T et al. The effect of age on odor-stimulated functional MR imaging. AJNR American Journal of Neuroradiology. 1999;20:600-608.
  111. Stern WC, Pugh WW, Morgane PJ. Single unit activity infrontal cortex and caudate nucleus of young and old rats. Neurobiology of Aging. 1985;6:245-248.
  112. Roy D, Singh R. Age-related change in the multiple unit activity of the rat brain parietal cortex and the effect of centrophenoxine. Experimental Gerontology. 1988;23:161-174.
  113. Sharma D, Singh R. Age-related decline in multiple unit action potentials of cerebral cortex correlates with the number of lipofuscin-containing neurons. Indian Journal of Experimental Biology. 1996;34:776-781.
  114. Palombi PS, Caspary DM. Physiology of the aged Fischer 344 rat inferior colliculus: responses to contralateral monaural stimuli. Journal of Neurophysiology. 1996;76:3114-3125.
  115. Mizumori SJ, Barnes CA, McNaughton BL. Differential effects of age on subpopulations of hippocampal theta cells. Neurobiology of Aging. 1992;13:673-679.
  116. Barnes CA. Normal aging: regionally specific changes in hippocampal synaptic transmission. Trends in Neurosciences. 1994;17:13-18.
  117. SatinoffE,LiH,TchengTKetal.Dothesuprachiasmaticnuclei oscillate in old rats as they do in young ones? American Journal of Physiology. 1993;265:R1216-R1222.
  118. Barnes CA, Rao G, Foster TC, McNaughton BL. Region- specific age effects on AMPA sensitivity: electrophysiological evidence for loss of synaptic contacts in hippocampal field CA1. Hippocampus. 1992;2:457-468.
  119. Potier B, Rascol O, Jazat F, Lamour Y, Dutar P. Alterations in the properties of hippocampal pyramidal neurons in the aged rat. Neuroscience. 1992;48:793-806.
  120. Foster TC, Barnes CA, Rao G, McNaughton BL. Increase in perforant path quantal size in aged F-344 rats. Neurobiology of Aging. 1991;12:441-448.
  121. Barnes CA, McNaughton BL. Physiological compensation for loss of afferent synapses in rat hippocampal granule cells during senescence. Journal of Physiology. 1980;309:473-485.
  122. Jouvenceau A, Dutar P, Billard JM. Alteration of NMDA receptor-mediated synaptic responses in CA1 area of the aged rat hippocampus: contribution of GABAergic and cholinergic deficits. Hippocampus. 1998;8:627-637.
  123. Johnson SC, Saykin AJ, Baxter LC et al. The relationship between fMRI activation and cerebral atrophy: comparison of normal aging and alzheimer disease. Neuroimage. 2000;11:179-187.
  124. Bliss TV, Lomo T. Long-lasting potentiation of synaptic transmission in the dentate area of the anaesthetized rabbit following stimulation of the perforant path. Journal of Physiology. 1973;232:331-356.
  125. Zorumski CF, Izumi Y. Modulation of LTP induction by NMDA receptor activation and nitric oxide release. Progress in Brain Research. 1998;118:173-182.
  126. Deupree DL, Bradley J, Turner DA. Age-related alterations in potentiation in the CA1 region in F344 rats. Neurobiology of Aging. 1993;14:249-258.
  127. Rosenzweig ES, Rao G, McNaughton BL, Barnes CA. Role of temporal summation in age-related long-term potentiation- induction deficits. Hippocampus. 1997;7:549-558.
  128. Detoledo-Morrell L, Geinisman Y, Morrell F. Age- dependent alterations in hippocampal synaptic plasticity: relation to memory disorders. Neurobiology of Aging. 1988;9:581-590.
  129. Sharp PE, Barnes CA, McNaughton BL. Effects of aging on environmental modulation of hippocampal evoked responses. Behavioral Neuroscience. 1987;101:170-178.
  130. Buell SJ, Coleman PD. Dendritic growth in the aged human brain and failure of growth in senile dementia. Science. 1979;206:854-856.
  131. Bertoni-Freddari C, Giuli C, Pieri C, Paci D. Age-related morphological rearrangements of synaptic junctions in the rat cerebellum and hippocampus. Archives of Gerontology and Geriatrics. 1986;5:297-304.
  132. Spengler F, Godde B, Dinse HR. Effects of ageing on topographic organization of somatosensory cortex. Neuroreport. 1995;6:469-473.
  133. Grady CL. Brain imaging and age-related changes in cognition. Experimental Gerontology. 1998;33:661-673.
  134. Kaas JH, Merzenich MM, Killackey HP. The reorganization of somatosensory cortex following peripheral nerve damage in adult and developing mammals. Annual Review of Neuroscience. 1983;6:325-356.
  135. Diamond ME, Armstrong-James M, Ebner FF. Experience- dependent plasticity in adult rat barrel cortex. Proceedings of the National Academy of Sciences of the United States of America. 1993;90:2082-2086.
  136. Lowy MT, Wittenberg L, Yamamoto BK. Effect of acute stress on hippocampal glutamate levels and spectrin proteolysis in young and aged rats. Journal of Neurochemistry. 1995;65:268- 274.
  137. Dirnagl U, Iadecola C, Moskowitz MA. Pathobiology of ischaemic stroke: an integrated view. Trends in Neurosciences. 1999;22:391-397.
  138. Hoyer S, Krier C. Ischemia and aging brain. Studies on glucose and energy metabolism in rat cerebral cortex. Neurobiology of Aging. 1986;7:23-29.
  139. Wellman CL, Pelleymounter MA. Differential effects of nucleus basalis lesions in young adult and aging rats. Neurobiology of Aging. 1999;20:381-393.
  140. Wong, T. P., Cuello, A. C., and De Koninck, Y. Imbalance of tonic excitation and inhibition onto layer V pyramidal neurons in aged impaired rats. Abstracts Society for Neuroscience 26, 1838. 2000.
  141. Wong TP, Marchese G, Casu MA, Ribeiro-da-Silva A, Cuello AC, De Koninck Y. Loss of presynaptic and postsynaptic structures is accompanied by compensatory increase in action potential- dependent synaptic input to layer V neocortical pyramidal neurons in
  142. aged rats. Journal of Neuroscience. 2000;20:8596-8606.

Downloads

Download data is not yet available.