Neurostimulation provides low levels of electrical stimulation to the brain through transcranial direct current stimulation (tDCS).
- Pons stimulation),
- Vagus nerve,
- Trigeminal stimulation.
TRANSCRANIAL DIRECT-CURRENT STIMULATION (tDCS)
- Galvanic (tDCS) is unlike any other current
- Has polarity specific effects on neurons.
- Changes firing threshold and can produce long lasting after effects.
- Causes neurons to fire by increasing “neuronal excitability”
- These impulses travel throughout the brain and activate or reactivate neurons and structures involved in human function.
Electrical stimulation of the cranial nerves produces neural impulses directly into the brain stem and cerebellum – which is the relay station to the brain and spinal cord. These impulses travel throughout the brain and activate or reactivate neurons and structures involved in human function.
We use Transcutaneous vagal (VNS) and trigeminal nerve stimulation, Repetitive Somatosensory Stimulation for those affected by: vestibular and cerebellar disorders, movement disorders, concussion, Cerebral Palsy, Autism, post-stroke, MS and more.
We use Galvanic Vestibular Stimulation for those affected by balance disorders, post stroke rehab and more
- Perpiheral & Central Vestibulopathies
- Suboccipital neuralgia, Cervicogenic dizziness
- Cerebellar Ataxia
- Cortical, cerebellar, brainstem strokes
- Movement Disorders – Multiple System Atrophy (MSA), Progressive Supranuclear Palsy (PSP), Parkinson, HSP, PLS
- Multiple Sclerosis, Hereditary Spastic paraplegia (HSP), PLS
- Cerebral Palsy,
- ADHD, ADD, Neuro-Developmental, Aphasias
- Acquired Brain Injuries
- Functional Neurological Disorder, Conversion Movement Disorder
Difference between TENS and Galvanic
Galvanic (tDCS) is unlike any other current, it has polarity specific effects on neurons. It changes firing threshold and can produce long lasting after effects.
TENS does not maintain a constant current. tDCS monitors resistance and adjusts voltage constantly to give a constant output current, whereas tens is a “dumb” device that just pulsates a set voltage.
The TENS device applies alternating current while the tDCS applies direct current. TENS units can operate at a variety of different frequencies (50Hz is common) and because of this, they are not similar at all. The placement of the electrodes is very important in the tDCS because one
electrode is designed to induce a localised anodal effect, while the other will induce a cathodal effect.
This anodal/cathodal effect cannot occur for alternating current because the integral of the waveform as a function of time is zero. Thus, the TENS device would be more similar to transcranial rando noise stimulation than it would be to transcranial direct current stimulation.
How does Transcranial Direct Current Stimulation (tDCS) work?
Scientific research findings suggest that tDCS causes polarity-dependent alternations in cortical excitability and activity. In other words, of the two electrodes (the positive anode and the negative cathode), anodal stimulation increases cortical excitability, while cathodal stimulation decreases cortical excitability. These changes in cortical excitability are most likely initiated through respective depolarization and hyper-polarization of the underlying neurons. It appears that this effect can be attributed to a sub-threshold modulation of resting membrane potential,which can persist even after stimulation. This causes neurons to
fire and form neuroplasticity.