Cited by 172Transcranial Magnetic Stimulation StudiesNeuroscience and Neuropharmacology ResearchMotor Control and Adaptation

Changes in Cortical Plasticity Across the Lifespan

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Freitas, Catarina, Perez, Jennifer, Knobel, Mark, Tormos, Jose M., Oberman, Lindsay, Eldaief, Mark, Bashir, Shahid, Vernet, Marine +2 more·2011·Frontiers in Aging Neuroscience

Abstract

Deterioration of motor and cognitive performance with advancing age is well documented, but its cause remains unknown. Animal studies dating back to the late 1970s reveal that age-associated neurocognitive changes are linked to age-dependent changes in synaptic plasticity, including alterations of long-term potentiation and depression (LTP and LTD). Non-invasive brain stimulation techniques enable measurement of LTP- and LTD-like mechanisms of plasticity, in vivo, in humans, and may thus provide valuable insights. We examined the effects of a 40-s train of continuous theta-burst stimulation (cTBS) to the motor cortex (600 stimuli, three pulses at 50 Hz applied at a frequency of 5 Hz) on cortico-spinal excitability as measured by the motor evoked potentials (MEPs) induced by single-pulse transcranial magnetic stimulation before and after cTBS in the contralateral first dorsal interosseus muscle. Thirty-six healthy individuals aged 19-81 years old were studied in two sites (Boston, USA and Barcelona, Spain). The findings did not differ across study sites. We found that advancing age is negatively correlated with the duration of the effect of cTBS (r = -0.367; p = 0.028) and the overall amount of corticomotor suppression induced by cTBS (r = -0.478; p = 0.003), and positively correlated with the maximal suppression of amplitude on motor evoked responses in the target muscle (r = 0.420; p = 0.011). We performed magnetic resonance imaging (MRI)-based individual morphometric analysis in a subset of subjects to demonstrate that these findings are not explained by age-related brain atrophy or differences in scalp-to-brain distance that could have affected the TBS effects. Our findings provide empirical evidence that the mechanisms of cortical plasticity area are altered with aging and their efficiency decreases across the human lifespan. This may critically contribute to motor and possibly cognitive decline.

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Authors
Freitas, C., Perez, J., Knobel, M., Tormos, J. M., Oberman, L., Eldaief, M., Bashir, S., Vernet, M., Peña-Gómez, C., & Pascual-Leone, A.
Affiliations
  • Beth Israel Deaconess Medical Center (US)
  • Universitat de Barcelona (ES)
Venue
Frontiers in Aging Neuroscience
Published
2011
Volume
3
Pages
5-5
ISSN
1663-4365 (ISSN-L)
OpenAlex
W2169819134
Cited by
172
References
76
Citations by year
2026: 7 · 2025: 8 · 2024: 17 · 2023: 10 · 2022: 14 · 2021: 15 · 2020: 10 · 2019: 7 · 2018: 9 · 2017: 12 · 2016: 14 · 2015: 11 · 2014: 15 · 2013: 13 · 2012: 3
FWCI
6.54
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Frontiers in Aging Neuroscience (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • RIUCV (Universidad Católica de Valencia San Vicente Martír) (submittedVersion, cc-by)
  • HAL (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Hispana (submittedVersion, cc-by)
Funders
  • National Institute of Mental Health (F32MH080493)
  • National Center for Research Resources (K24RR018875, M01RR001032, UL1RR025758, KL2RR025757)
Topics
  • Life Sciences › Neuroscience › Neurology › Transcranial Magnetic Stimulation Studies
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Motor Control and Adaptation
Keywords
cortical plasticity, aging, continuous theta burst stimulation, long-term potentiation, long-term depression, motor cortex, corticospinal excitability, motor evoked potentials, first dorsal interosseous muscle, age-related motor decline, age-related cognitive decline, brain morphometry, brain atrophy

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