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REVIEW OF LITERATURE
NEUROPLASTICITY
Presented by
Jemimah John David
Mpt 1 (Neurophysiotherapy)
CONTENTS
• Introduction
• History
• Types
• Plasticity and Learning
• Plasticity and Recovery
• Principles
• Plasticity and Nutrition
7/12/2023 4
INTRODUCTION
• WHAT IS NEUROPLASTICITY??
What is Neuroplasticity???????
Plasticity means ability to modify
Neuroplasticity means ability of the brain to rewire
and modify itself in response to the demands imposed
on it
William James coined the term
(video)
HISTORY
HISTORY
Types
STRUCTURAL
FUNCTIONAL
Refers to changes in the strength between neurons (synapses);
synaptic plasticity.
STRUCTURAL
FUNCTIONAL
Increased release of neurotransmitters from pre-synaptic
membranes.
Increased efficacy or concentration of the receptors on
the post-synaptic membranes.
Functional plasticity is associated to learning
Functional plasticity added up leads to structural
changes in the brain
11
Neuro-regeneration in CNS injury:
The distal segment of the injured axon degenerates, and the
surrounding myelin gets fragmented; axonal regeneration does not
occur in CNS.
Why has it been that the human CNS to not regenerate?
i. Intrinsic factors – Formation of specific protein (PTEN and
SOCS3) that inhibit the pathways signalling axonal survival and
growth.
ii. Extrinsic factors – Glial scar, and myelin composition
12
Nagappan PG, Chen H, Wang DY. Neuroregeneration and plasticity: a review of the physiological
mechanisms for achieving functional recovery postinjury. Military Medical Research. 2020
Dec;7(1):1-6.
WHERE IN CNS????
CNS
Cellular level
Network level
Genetic level
• Neovascularization
• Proteins that aid Neuroplasticity – BDNF, NGF,
bFGF, ERK, Neuronal Nitric Oxide
• Changes in Synapses-
Receptor Hypersensitivity,
Increase in production of neurotransmitters
Cellular level
• Cortical re-organization
• Long term potentiation and depression
Network level
7/12/2023 18
Genetic level
• DNA methylation
• Histone modification
• Micro RNA
Genetic level
How to Measure Plasticity?
fMRI
Magnetoencephalography
EEG
TMS with EMG
Diffusion Tension Imaging
Plasticity and Learning
how do we remember what we learn ?
HABITUATION
• Learned suppression of a response to non-noxious stimulus
SENSITIZATION
• Increased response to stimulus that is consistently
preceded by noxious stimulus
example?
Associative learning
CLASSICAL CONDITIONING OPERANT CONDITIONING
Example:
This Photo by Unknown Author is licensed under CC BY-SA
• PROCEDURAL LEARNING
based on Trial and Error
Hence feedback,correction important
• EXPLICIT /DECLARATIVE MEMORY –
Important to tell the patients on why this
particular exercise is done and how it will help
Neuroplasticity and Recovery
What happens to the brain post any Injury???
• DIACHISIS-
Diaschisis is a transient CNS disorder involving loss of
function
in a structurally intact brain area because of loss of
input from an anatomically connected injured area
of the brain
DIACHISIS
• EDEMA-
31
• Neurogenesis- formation of new neurons
PRINCIPLES
• USE IT OR LOSE IT
• USE IT AND IMPROVE IT
• BE SPECIFIC
• REPETITION
• INTENSITY MATTERS
• SALIENCE
• AGE
• TRANSFERENCE
• INTERFERENCE
• PATIENT ATTTENION
• REWARD OR FEEDBACK
• ENVIRONMENT
• FUN
• HELPING OTHERS
TITLE AIM METHODOLOGY CONCLUSION
Effectiveness of
physiotherapy
interventions in brain
plasticity, balance and
functional ability in
acute stroke survivors:
A randomized
controlled trial
Umi Budi Rahayu et
al. - 2020
To investigate the effect of
physiotherapy interventions
on brain neuroplasticity by
evaluating the brain
plasticity regeneration,
balance and functional
activity
A randomized controlled trial
was conducted with 64 stroke
patients from three hospitals in
the Surakarta region, Indonesia.
Control groups (n = 32) received
conventional physiotherapy and
intervention groups (n = 32)
received neurorestoration
protocol, which both lasted for
seven days. Efficacy of the
interventions were measured on
brain-derived neurotropic factor
serum analysis, Berg Balance
Scale and Barthel Index,
respectively.
Neurorestoration protocol
that combined several
established physiotherapy
interventions was effective
in improving balance and
functional ability of stroke
patients in only a seven
days period.
TITLE AIM METHODOLOGY CONCLUSION
Effects of virtual
reality-based motor
control training
on inflammation,
oxidative stress,
neuroplasticity
and upper limb motor
function in patients
with chronic stroke:
a randomized
controlled trial
Chien-Yu Huang et al.
2022
To identify the effects
of immersive VRT on
inflammation,
oxidative stress,
neuroplasticity and
upper limb motor
function in stroke
patients
30 patients with chronic stroke were
randomized to the VRT or
conventional occupational therapy
groups. Serum biomarkers including
interleukin 6, intracellular adhesion
molecule 1, heme oxygenase 1, 8-
hydroxy-2-deoxyguanosine, and brain-
derived neurotrophic factor were
assessed to reflect inflammation,
oxidative stress and neuroplasticity.
Clinical assessments including active
range of motion of the upper limb and
the Fugl-Meyer Assessment for upper
extremity (FMA-UE) were also used.
Two-way mixed analyses of variance
(ANOVAs) were used to examine the
efects of the intervention (VRT and
COT) and time on serum biomarkers
and upper limb motor function.
This was the frst study to
combine the efectiveness of
immersive VRT using
serum biomarkers as
out- come measures. This
study demonstrated
promising results that
support the further
application of commercial
and immersive VR
technologies in patients
with chronic stroke.
TITLE AIM METHODOLOGY CONCLUSION
Neuroplastic effects of
end-effector robotic gait
training for hemiparetic
stroke: a randomized
controlled trial
Hayeon Kim et al.
2020
To compared the efects
of end-effector robot-
assisted gait training (E-
RAGT) and
bodyweight-supported
treadmill training
(BWST) on cortical
activation in individuals
with hemiparetic stroke
25 men and 5 women aged 53.2 ±
11.2 years were recruited and
randomly assigned to participate in
E-RAGT or BWST for 30 min/day,
5 days/week, for 4 weeks. Cortical
activity, lower limb motor
function, and gait speed were
evaluated before and after training.
Clinical outcomes, including the
Fugl-Meyer assessment (FMA),
timed up and go test, and 10-m
walk test scores, improved after
training in both groups, with
signifcantly better FMA scores in
the E-RAGT group than in the
BWST group.
E-RAGT efectively
improves neuroplastic
outcomes(fNIRS) in
hemiparetic stroke,
although its superiority over
conventional training
remains unclear.
TITLE AIM METHODOLOGY CONCLUSION
Neuroplasticity and
brain reorganization
associated with positive
outcomes of
multidisciplinary
rehabilitation in
progressive multiple
sclerosis: A fMRI study
Patrice Peran et al.
2020
The purpose of the study
was to assess the effect
of multidisciplinary
rehabilitation on the
whole brain of MS
patients by means of
functional magnetic
resonance imaging
(fMRI).
Thirty individuals affected by
MS with a medium-high severity
of disease were enrolled. The
fMRI examination assessed a
range of action-related tasks
involving passive movement,
mental simulation of action and
miming of action triggered by
external stimuli, such as object
photography. The three tasks
were performed using each arm
separately. The fMRI acquisitions
were performed at T1 (inclusion
in the study), T2 (3 months later,
at the start of rehabilitation) and
T3 (after 3 months of
multidisciplinary rehabilitation).
The fMRI results revealed a
the activation of cerebral
regions not usually involved
in task-specific related
network, such as the medial
prefrontal area.
Neuroplasticity and Nutrition
References
1. Motor control by Shumway and Cook
2. Darcy Umphred
3. Rahayu UB, Wibowo S, Setyopranoto I, Hibatullah Romli M. Effectiveness of physiotherapy interventions
in brain plasticity, balance and functional ability in stroke survivors: A randomized controlled trial.
NeuroRehabilitation. 2020 Jan 1;47(4):463-70.
4. Huang CY, Chiang WC, Yeh YC, Fan SC, Yang WH, Kuo HC, Li PC. Effects of virtual reality-based motor
control training on inflammation, oxidative stress, neuroplasticity and upper limb motor function in
patients with chronic stroke: a randomized controlled trial. BMC neurology. 2022 Jan 11;22(1):21.
5. Kim H, Park G, Shin JH, You JH. Neuroplastic effects of end-effector robotic gait training for hemiparetic
stroke: A randomised controlled trial. Scientific reports. 2020 Jul 27;10(1):12461.
6. Péran P, Nemmi F, Dutilleul C, Finamore L, Caravasso CF, Troisi E, Iosa M, Sabatini U, Grasso MG.
Neuroplasticity and brain reorganization associated with positive outcomes of multidisciplinary
rehabilitation in progressive multiple sclerosis: a fMRI study. Multiple Sclerosis and Related Disorders.
2020 Jul 1;42:102127.
NEUROPLASTICITY.pptx

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NEUROPLASTICITY.pptx

  • 2.
  • 3. NEUROPLASTICITY Presented by Jemimah John David Mpt 1 (Neurophysiotherapy)
  • 4. CONTENTS • Introduction • History • Types • Plasticity and Learning • Plasticity and Recovery • Principles • Plasticity and Nutrition 7/12/2023 4
  • 5. INTRODUCTION • WHAT IS NEUROPLASTICITY?? What is Neuroplasticity??????? Plasticity means ability to modify Neuroplasticity means ability of the brain to rewire and modify itself in response to the demands imposed on it William James coined the term (video)
  • 9. Refers to changes in the strength between neurons (synapses); synaptic plasticity. STRUCTURAL
  • 10. FUNCTIONAL Increased release of neurotransmitters from pre-synaptic membranes. Increased efficacy or concentration of the receptors on the post-synaptic membranes. Functional plasticity is associated to learning Functional plasticity added up leads to structural changes in the brain
  • 11. 11
  • 12. Neuro-regeneration in CNS injury: The distal segment of the injured axon degenerates, and the surrounding myelin gets fragmented; axonal regeneration does not occur in CNS. Why has it been that the human CNS to not regenerate? i. Intrinsic factors – Formation of specific protein (PTEN and SOCS3) that inhibit the pathways signalling axonal survival and growth. ii. Extrinsic factors – Glial scar, and myelin composition 12 Nagappan PG, Chen H, Wang DY. Neuroregeneration and plasticity: a review of the physiological mechanisms for achieving functional recovery postinjury. Military Medical Research. 2020 Dec;7(1):1-6.
  • 15. • Neovascularization • Proteins that aid Neuroplasticity – BDNF, NGF, bFGF, ERK, Neuronal Nitric Oxide • Changes in Synapses- Receptor Hypersensitivity, Increase in production of neurotransmitters Cellular level
  • 16.
  • 17. • Cortical re-organization • Long term potentiation and depression Network level
  • 19.
  • 20. Genetic level • DNA methylation • Histone modification • Micro RNA Genetic level
  • 21. How to Measure Plasticity? fMRI Magnetoencephalography EEG TMS with EMG Diffusion Tension Imaging
  • 22. Plasticity and Learning how do we remember what we learn ?
  • 23.
  • 24. HABITUATION • Learned suppression of a response to non-noxious stimulus
  • 25. SENSITIZATION • Increased response to stimulus that is consistently preceded by noxious stimulus example?
  • 26. Associative learning CLASSICAL CONDITIONING OPERANT CONDITIONING Example: This Photo by Unknown Author is licensed under CC BY-SA
  • 27. • PROCEDURAL LEARNING based on Trial and Error Hence feedback,correction important • EXPLICIT /DECLARATIVE MEMORY – Important to tell the patients on why this particular exercise is done and how it will help
  • 28. Neuroplasticity and Recovery What happens to the brain post any Injury??? • DIACHISIS- Diaschisis is a transient CNS disorder involving loss of function in a structurally intact brain area because of loss of input from an anatomically connected injured area of the brain
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  • 32.
  • 33. • Neurogenesis- formation of new neurons
  • 34. PRINCIPLES • USE IT OR LOSE IT • USE IT AND IMPROVE IT • BE SPECIFIC • REPETITION • INTENSITY MATTERS • SALIENCE • AGE • TRANSFERENCE
  • 35. • INTERFERENCE • PATIENT ATTTENION • REWARD OR FEEDBACK • ENVIRONMENT • FUN • HELPING OTHERS
  • 36. TITLE AIM METHODOLOGY CONCLUSION Effectiveness of physiotherapy interventions in brain plasticity, balance and functional ability in acute stroke survivors: A randomized controlled trial Umi Budi Rahayu et al. - 2020 To investigate the effect of physiotherapy interventions on brain neuroplasticity by evaluating the brain plasticity regeneration, balance and functional activity A randomized controlled trial was conducted with 64 stroke patients from three hospitals in the Surakarta region, Indonesia. Control groups (n = 32) received conventional physiotherapy and intervention groups (n = 32) received neurorestoration protocol, which both lasted for seven days. Efficacy of the interventions were measured on brain-derived neurotropic factor serum analysis, Berg Balance Scale and Barthel Index, respectively. Neurorestoration protocol that combined several established physiotherapy interventions was effective in improving balance and functional ability of stroke patients in only a seven days period.
  • 37. TITLE AIM METHODOLOGY CONCLUSION Effects of virtual reality-based motor control training on inflammation, oxidative stress, neuroplasticity and upper limb motor function in patients with chronic stroke: a randomized controlled trial Chien-Yu Huang et al. 2022 To identify the effects of immersive VRT on inflammation, oxidative stress, neuroplasticity and upper limb motor function in stroke patients 30 patients with chronic stroke were randomized to the VRT or conventional occupational therapy groups. Serum biomarkers including interleukin 6, intracellular adhesion molecule 1, heme oxygenase 1, 8- hydroxy-2-deoxyguanosine, and brain- derived neurotrophic factor were assessed to reflect inflammation, oxidative stress and neuroplasticity. Clinical assessments including active range of motion of the upper limb and the Fugl-Meyer Assessment for upper extremity (FMA-UE) were also used. Two-way mixed analyses of variance (ANOVAs) were used to examine the efects of the intervention (VRT and COT) and time on serum biomarkers and upper limb motor function. This was the frst study to combine the efectiveness of immersive VRT using serum biomarkers as out- come measures. This study demonstrated promising results that support the further application of commercial and immersive VR technologies in patients with chronic stroke.
  • 38. TITLE AIM METHODOLOGY CONCLUSION Neuroplastic effects of end-effector robotic gait training for hemiparetic stroke: a randomized controlled trial Hayeon Kim et al. 2020 To compared the efects of end-effector robot- assisted gait training (E- RAGT) and bodyweight-supported treadmill training (BWST) on cortical activation in individuals with hemiparetic stroke 25 men and 5 women aged 53.2 ± 11.2 years were recruited and randomly assigned to participate in E-RAGT or BWST for 30 min/day, 5 days/week, for 4 weeks. Cortical activity, lower limb motor function, and gait speed were evaluated before and after training. Clinical outcomes, including the Fugl-Meyer assessment (FMA), timed up and go test, and 10-m walk test scores, improved after training in both groups, with signifcantly better FMA scores in the E-RAGT group than in the BWST group. E-RAGT efectively improves neuroplastic outcomes(fNIRS) in hemiparetic stroke, although its superiority over conventional training remains unclear.
  • 39. TITLE AIM METHODOLOGY CONCLUSION Neuroplasticity and brain reorganization associated with positive outcomes of multidisciplinary rehabilitation in progressive multiple sclerosis: A fMRI study Patrice Peran et al. 2020 The purpose of the study was to assess the effect of multidisciplinary rehabilitation on the whole brain of MS patients by means of functional magnetic resonance imaging (fMRI). Thirty individuals affected by MS with a medium-high severity of disease were enrolled. The fMRI examination assessed a range of action-related tasks involving passive movement, mental simulation of action and miming of action triggered by external stimuli, such as object photography. The three tasks were performed using each arm separately. The fMRI acquisitions were performed at T1 (inclusion in the study), T2 (3 months later, at the start of rehabilitation) and T3 (after 3 months of multidisciplinary rehabilitation). The fMRI results revealed a the activation of cerebral regions not usually involved in task-specific related network, such as the medial prefrontal area.
  • 41. References 1. Motor control by Shumway and Cook 2. Darcy Umphred 3. Rahayu UB, Wibowo S, Setyopranoto I, Hibatullah Romli M. Effectiveness of physiotherapy interventions in brain plasticity, balance and functional ability in stroke survivors: A randomized controlled trial. NeuroRehabilitation. 2020 Jan 1;47(4):463-70. 4. Huang CY, Chiang WC, Yeh YC, Fan SC, Yang WH, Kuo HC, Li PC. Effects of virtual reality-based motor control training on inflammation, oxidative stress, neuroplasticity and upper limb motor function in patients with chronic stroke: a randomized controlled trial. BMC neurology. 2022 Jan 11;22(1):21. 5. Kim H, Park G, Shin JH, You JH. Neuroplastic effects of end-effector robotic gait training for hemiparetic stroke: A randomised controlled trial. Scientific reports. 2020 Jul 27;10(1):12461. 6. Péran P, Nemmi F, Dutilleul C, Finamore L, Caravasso CF, Troisi E, Iosa M, Sabatini U, Grasso MG. Neuroplasticity and brain reorganization associated with positive outcomes of multidisciplinary rehabilitation in progressive multiple sclerosis: a fMRI study. Multiple Sclerosis and Related Disorders. 2020 Jul 1;42:102127.