Navigation Links
Electrical brain stimulation can alleviate swallowing disorders after stroke

Amsterdam, NL, July 2, 2012 After stroke, patients often suffer from dysphagia, a swallowing disorder that results in greater healthcare costs and higher rates of complications such as dehydration, malnutrition, and pneumonia. In a new study published in the July issue of Restorative Neurology and Neuroscience, researchers have found that transcranial direct current stimulation (tDCS), which applies weak electrical currents to the affected area of the brain, can enhance the outcome of swallowing therapy for post-stroke dysphagia.

"Our pilot study demonstrated that ten daily sessions of tDCS over the affected esophageal motor cortex of the brain hemisphere affected by the stroke, combined with swallowing training, improved post-stroke dysphagia. We observed long-lasting effects of anodal tDCS over three months," reports lead investigator Nam-Jong Paik, MD, PhD, of the Department of Rehabilitation Medicine, Seoul National University College of Medicine, Seoul, South Korea.

Sixteen patients with acute post-stroke dysphagia were enrolled in the trial. They showed signs of swallowing difficulties such as reduced tongue movements, coughing and choking during eating, and vocal cord palsy. Patients underwent ten 30-minute sessions of swallowing therapy and were randomly assigned to a treatment or control group. Both groups were fitted with an electrode on the scalp, on the side of the brain affected by the stroke, and in the region associated with swallowing. For the first 20 minutes of their sessions, tDCS was administered to the treatment group and then swallowing training alone continued for the remaining 10 minutes. In the control group, the direct current was tapered down and turned off after thirty seconds. Outcomes were measured before the experiment, just after the experiment, and again three months after the experiment. A patient from each group underwent a PET scan at before and just after the treatment to view the effect of the treatment on metabolism.

All patients underwent interventions without any discomfort or fatigue. There were no significant differences in age, sex, stroke lesion site, or extent of brain damage. Evaluation just after the conclusion of the sessions found that dysphagia improved for all patients, without much difference between the two groups. However, at the three month follow-up, the treatment group showed significantly greater improvement than the control group.

In the PET study, there were significant differences in cerebral metabolism between the first PET scan and the second PET scan in the patient who had received tDCS. Increased glucose metabolism was observed in the unaffected hemisphere, although tDCS was only applied to the affected hemisphere, indicating that tDCS might activate a large area of the cortical network engaged in swallowing recovery rather than just the areas stimulated under the electrode.

"The results indicate that tDCS can enhance the outcome of swallowing therapy in post-stroke dysphagia," notes Dr. Paik. "As is always the case in exploratory research, further investigation involving a greater number of patients is needed to confirm our results. It will be important to determine the optimal intensity and duration of the treatment to maximize the long-term benefits."


Contact: Daphne Watrin
IOS Press

Related medicine news :

1. Study of Retired NFL Players Finds Evidence of Brain Damage
2. Study finds new gene mutations that lead to enlarged brain size, cancer, autism, epilepsy
3. Kernicterus Brain Damage in Babies Linked to Medical Malpractice
4. Magnets in iPad2 May Alter Settings on Brain Shunt Devices: Study
5. Link between brain insulin resistance, neuronal stress in worsening Alzheimers disease
6. Brain EEG Test Might Help Spot Autism: Study
7. First-ever Allen Brain Atlas Hackathon unleashes big data API to push neuroscience forward
8. Brain structure helps guide behavior by anticipating changing demands
9. Tracking Love, Lust in the Brain
10. Aging Brain Care model receives $7.8 million in CMS innovation funding
11. Deep Brain Stimulation May Offer Longer-Term Relief for Parkinsons
Post Your Comments:
(Date:11/27/2015)... ... November 27, 2015 , ... Consistent with the ... 2016 Building Better Radiology Marketing Programs meeting will showcase some of ... 6, 2016, at Caesars Palace in Las Vegas with a pre-conference session on ...
(Date:11/27/2015)... ... November 27, 2015 , ... The moment you stop ... not only fulfilling the needs of advisers and clients but going above and ... providing top-tier customer service. However, there's always room for improvement, which is why ...
(Date:11/27/2015)... (PRWEB) , ... November 27, 2015 , ... ... the largest, most successful and prominent nonprofit healthcare organizations in the country. They ... involvement with various organizations, and helped advance the healthcare industry as a whole ...
(Date:11/27/2015)... ... 2015 , ... Indosoft Inc., developer and distributor of the ... LTS (Long Term Support) into its Q-Suite 5.10 product line. , Making the ... a version of Asterisk that will receive not only security fixes, but feature ...
(Date:11/26/2015)... ... November 26, 2015 , ... CognisantMD ... for diagnostic imaging in the Waterloo region. Using the Ocean Platform, family physicians ... directly from their electronic medical record (EMR) without the need for redundant patient ...
Breaking Medicine News(10 mins):
(Date:11/26/2015)... , November 26, 2015 ... Juntendo universitetssjukhus ser potential att använda ... magnetresonansbilder (MR-bilder) för patienter med multipel ... ett forskningsavtal med SyntheticMR AB för att ... forskningsprojekt på sjukhuset. Med SyMRI kan man ...
(Date:11/26/2015)... , Nov. 26, 2015 Research ... addition of the "2016 Future Horizons and ... (TDM) Market: Supplier Shares, Country Segment Forecasts, Competitive ... --> --> ... analysis of the Italian therapeutic drug monitoring market, ...
(Date:11/25/2015)... Nov. 25, 2015  Amgen (NASDAQ: AMGN ) ... (BLA) with the United States ... a biosimilar candidate to Humira ® (adalimumab). Amgen ... submitted to the FDA and represents Amgen,s first BLA ... E. Harper , M.D., executive vice president of Research ...
Breaking Medicine Technology: