Movement is an essential part of our daily lives, and disorders of the motor system, such as spasticity, amyotrophic lateral sclerosis, and spinal cord injury are particularly debilitating for individuals. Simple rhythmic movements, such as walking and breathing, have constituted models for fundamental aspects of the motor system. Despite extensive investigations, the connectivity of the network responsible for generating motor activity remains unknown.
Scientists in a new study studied the network between nerve and muscle cells in turtles and found that most movements are generated in the spinal cord. The offers unique insight on into how movements are created and maintained. Whats more, it may imply treatments like ALS and spinal cord injuries.
Associate Professor and Head of Research Rune W. Berg from the Department of Neuroscience at the University of Copenhagen said, Naturally, there is a conversation with high-ranking parts of the nervous system, such as the cerebrum, but there are also reflexes that simply stem from the back.
For this study, scientists used electrodes to consider the spinal cord reflex of turtles when they scratched themselves with one hind leg. A reflex likewise found in dogs, cats, and several other mammals.
Similarly, humans are equipped with a variety of spinal reflexes. And, in terms of evolution, humans are different from the turtle.
According to scientists, there are many underlying mechanisms are same. Thus when the turtle rhythmically scratches itself using crawl movements from its hind leg, the fireworks of lightning-quick neurological impulses that are set off inside the shell are not far from the mechanisms that also trigger our muscles.
Assistant Professor Henrik Lindn from the research group behind the study said, It has been a common assumption that the activation of muscle neurons originates from some command center that sends a signal to many cells at one time.
Because the origin of movement has been difficult to find, it has long been assumed that it is a small core that sets the pace. Like some metronome. But our data has shown that it may be a large network.
To check if it is a matter of commands or an extensive network, scientists compared the relatively quiet rhythm of the turtles movement with the rapid neurological impulses from the spine.
Surprisingly, the measurements demonstrated no proof of connection and subsequently no evidence that the neurological signal in various cells ought to have originated from the same source, which would undoubtedly have been the case if it had been a command center that signaled to numerous cells simultaneously.
Now, scientists believe that neurological signals originate from a significant, scattered network of cells, each of which sends signals to only a few other cells a result which the group has subsequently replicated in computer models of a simulated, simple nervous system.
Rune W. Berg said, If we do not know enough about the network and how it works, we grope a bit in the dark when it comes to treatment. Conversely, once we gain insight into the principles behind the distribution of the network, and which cell types are important, we can better put the treatment of neurological disorders on the right track.
Now, scientists are planning to continue the mapping of the scattered neurological network with optical measurements that allow them to track the activity simultaneously over a larger area.
Continued here:
Most movements are actually generated in the spinal cord - Tech Explorist
- Hungarian Spinal Cord Injury Patient - Stem Cell Treatment Experience - May 7th, 2011 [May 7th, 2011]
- Stem cell treatment for Spinal Cord Injury (SCI)-Osama - May 8th, 2011 [May 8th, 2011]
- Spinal Cord Injury Patient after Stem Cell Treatment - Juan Carlos Murillo - May 10th, 2011 [May 10th, 2011]
- Spinal Cord Injury patient 10 years after injury after Stem Cell Treatment - May 10th, 2011 [May 10th, 2011]
- Rap Toward a Cure for Spinal Cord Injury - May 11th, 2011 [May 11th, 2011]
- Christopher "Kit" Bond - Spinal Cord Injury Stem Cell Patient - May 20th, 2011 [May 20th, 2011]
- Stem Cell Treatment - Spinal Cord Injury (2) - May 21st, 2011 [May 21st, 2011]
- Spinal Cord Injury-After Treatment, Pt was completely paralyzed (2) - May 22nd, 2011 [May 22nd, 2011]
- Spinal Cord Injury-After Treatment, Pt was completely paralyzed (1) - May 23rd, 2011 [May 23rd, 2011]
- Dogs recover following new treatment for spinal cord injury - June 2nd, 2011 [June 2nd, 2011]
- Spinal Cord Injury Rehabiliation Success Story - June 3rd, 2011 [June 3rd, 2011]
- Stem Cells for Spinal Cord Injury: Community Outreach San Diego 2011 - Trish Stressman - June 7th, 2011 [June 7th, 2011]
- Stroke Client Gains Strength and Mobility in North Palm Beach Florida - June 9th, 2011 [June 9th, 2011]
- Spinal Cord Injury Chicago Rehabilitation Lokomat - June 10th, 2011 [June 10th, 2011]
- Spinal Cord Injury Treatment With Stem Cells - June 11th, 2011 [June 11th, 2011]
- Spinal Cord Injury Patient after Stem Cell Treatment - Wesley Hixen - June 12th, 2011 [June 12th, 2011]
- Stem Cell Therapy for Spinal Cord Injury - Injured Airline Pilot Flies Again - June 13th, 2011 [June 13th, 2011]
- David Chen: How would stem-cell therapies work in the treatment of spinal cord injuries? - June 17th, 2011 [June 17th, 2011]
- William Rader MD - Paralyzed Spinal Cord Injury Patient Walks Again - June 29th, 2011 [June 29th, 2011]
- The Spinal Cord Injury Treatment Team - July 4th, 2011 [July 4th, 2011]
- Introduction to the Bioness H200 Hand Rehabilitation System - July 14th, 2011 [July 14th, 2011]
- Organ repair using own stem cells -- brain, heart - Future Health keynote speaker - July 15th, 2011 [July 15th, 2011]
- 2011 Shriners Ride for Kids, Salt Lake City Utah. - July 17th, 2011 [July 17th, 2011]
- Degenerative Disc Disease: C5-C6 c6-C7 Treatment - July 18th, 2011 [July 18th, 2011]
- Rehabilitation Institute of Michigan's 60 Anniversary TV Commercial - July 18th, 2011 [July 18th, 2011]
- California Spinal Cord Injury Attorney: Obtaining damages for lifetime care. - July 19th, 2011 [July 19th, 2011]
- Physical and Mental Adjustments After a Spinal Cord Injury - July 19th, 2011 [July 19th, 2011]
- Comprehensive Inpatient Rehabilitation - July 28th, 2011 [July 28th, 2011]
- SCI Treatment Center at the Claremont Club - July 30th, 2011 [July 30th, 2011]
- Spinal Cord Inury Patient at XCell-Center- M. Hasan - August 5th, 2011 [August 5th, 2011]
- Spinal Cord Inury Patient at XCell-Center- K. Potts - August 6th, 2011 [August 6th, 2011]
- Magee Rehabilitation Hospital Foundation and Toyota 100 Cars for Good - August 13th, 2011 [August 13th, 2011]
- SCI_Celine_French_ifting_her_arms.wmv - September 1st, 2011 [September 1st, 2011]
- New Treatment May Help Paralyzed Patients Move Again By Dr.Zaghloul ahmed - September 1st, 2011 [September 1st, 2011]
- Claire Marsh - Spinal Cord Injury Part One - September 6th, 2011 [September 6th, 2011]
- Coping with spinal cord and traumatic brain injuries - September 10th, 2011 [September 10th, 2011]
- Stem Cell Treatment - Spinal Cord Injury (3) - September 15th, 2011 [September 15th, 2011]
- Stem Cell Treatment - Spinal Cord Injury (1) - September 20th, 2011 [September 20th, 2011]
- Stem cell treatment by Adiva Health Care India after Spinal Cord Injury - September 22nd, 2011 [September 22nd, 2011]
- Spinal Cord Injury Documentary: You Will Never Walk Again, Part 1 - September 24th, 2011 [September 24th, 2011]
- Claire Marsh Returns - Spinal Cord Injury Patient - September 25th, 2011 [September 25th, 2011]
- Spinal Cord Injury: Raising awareness about research and treatment for spinal cord injury - September 26th, 2011 [September 26th, 2011]
- Walking after Spinal Cord injury and Stem Cells - September 27th, 2011 [September 27th, 2011]
- New Treatments for Spinal Cord Injuries - October 10th, 2011 [October 10th, 2011]
- Claire Marsh - Spinal Cord Injury Part Two - Video - October 18th, 2011 [October 18th, 2011]
- Stem Cell Treatment for Spinal Cord Injury - Video - November 2nd, 2011 [November 2nd, 2011]
- Stem Cells - Treatment for Spinal Cord Injury - Video - November 2nd, 2011 [November 2nd, 2011]
- (Film Trailer) - The Spinal Cord Journey: Stem Cell Therapy Stories of Recovery - Video - November 27th, 2011 [November 27th, 2011]
- Stem Cell Treatment for T-6 Spinal Cord Injury - Video - December 7th, 2011 [December 7th, 2011]
- What is Project Walk Atlanta - Video - December 13th, 2011 [December 13th, 2011]
- Stem Cells Treatment for Spinal Cord Injuries, Successfully Results, Stem Therapy - Video - December 28th, 2011 [December 28th, 2011]
- Stem Cell Therapy for Spinal Cord Injury, India Mumbai - Video - January 6th, 2012 [January 6th, 2012]
- "April Crave", "Project Walk Spinal Cord Injury Recovery" - Video - January 10th, 2012 [January 10th, 2012]
- "Lori Hammond", "Project Walk Spinal Cord Injury Recovery" - Video - January 23rd, 2012 [January 23rd, 2012]
- "Chad C.""spinal cord Injury treatment" "spinal cord injury" "spinal cord injury recovery" - Video - January 23rd, 2012 [January 23rd, 2012]
- "Hugo Rodovalho", "Client Spotlight Project Walk Spinal Cord Injury Recovery" - Video - January 27th, 2012 [January 27th, 2012]
- "Cecilia V.", "Project Walk Spinal Cord Injury Recovery" - Video - January 27th, 2012 [January 27th, 2012]
- "Roy R.", "Project Walk Spinal Cord Injury Recovery" - Video - January 27th, 2012 [January 27th, 2012]
- "Angela", "Project Walk Spinal Cord Injury Recovery" - Video - January 27th, 2012 [January 27th, 2012]
- "Joey's Story", "Project Walk Spinal Cord Injury Recovery" - Video - January 27th, 2012 [January 27th, 2012]
- "Spinal Cord Injury", "A Story Of One" - Video - January 27th, 2012 [January 27th, 2012]
- Spinal Cord Injuries - The Healing Center Project! - Video - January 28th, 2012 [January 28th, 2012]
- "Crystal H.", "Project Walk Spinal Cord Injury Recovery" - Video - February 3rd, 2012 [February 3rd, 2012]
- "Dave D.", "Project Walk Spinal Cord Injury Recovery" - Video - February 5th, 2012 [February 5th, 2012]
- "Brook", "Project Walk Spinal Cord Injury Recovery" - Video - February 5th, 2012 [February 5th, 2012]
- "Ashley Vargas", "Project Walk Spinal Cord Injury Recovery" - Video - February 6th, 2012 [February 6th, 2012]
- "Nathan Bayer", "Project Walk Spinal Cord Injury Recovery" - Video - February 8th, 2012 [February 8th, 2012]
- "Annette Ross", "Project Walk Spinal Cord Injury Recovery" - Video - February 8th, 2012 [February 8th, 2012]
- "Joe Guintu", "Project Walk Spinal Cord Injury Recovery" - Video - February 8th, 2012 [February 8th, 2012]
- "Trevor Comeau,"Project Walk Spinal Cord Injury Recovery" - Video - February 9th, 2012 [February 9th, 2012]
- "Kyle Eade, "Project Walk Spinal Cord Injury Recovery" - Video - February 11th, 2012 [February 11th, 2012]
- Velomedix Receives IDE Approval to Evaluate the Use of Rapid Therapeutic Hypothermia in the Management of AMI Patients - February 14th, 2012 [February 14th, 2012]
- Neuralstem Announces Closing of $5.2-Million Registered Direct Offering - February 14th, 2012 [February 14th, 2012]
- Chamber May Open Window for Treating Spine - February 15th, 2012 [February 15th, 2012]
- InVivo Therapeutics’ CEO Frank Reynolds Scheduled to Appear on Fox News First and San Antonio Living - February 17th, 2012 [February 17th, 2012]
- High doses of 'load' slows loss of bone in spinal cord injury - February 17th, 2012 [February 17th, 2012]
- InVivo Therapeutics Announces Pricing of Public Offering of Common Stock - February 17th, 2012 [February 17th, 2012]
- High Doses of Load Slows Bone Loss in Spinal Cord Injury - February 21st, 2012 [February 21st, 2012]
- InVivo Therapeutics Announces Full Exercise of Over-Allotment Option - February 22nd, 2012 [February 22nd, 2012]
- InVivo Therapeutics Announces Net $18.1M In Offering - February 22nd, 2012 [February 22nd, 2012]