ALLERGY, RESPIRATORY
Traffic, Dust Linked to Asthma in Kids
Air Pollution May Raise Blood Pressure
Folic Acid Might Offer Allergy Relief
ALTERNATIVE MEDICINE
Pain-Relieving Powers of Acupuncture Unclear
Health Tip: Anticipating Acupuncture
Massage Fosters Healing in Bereaved Relatives
ANIMAL CARE
Beware of Dog Bites
'Comfort Dogs' Come to Emotional Rescue
Separation Anxiety, Canine-Style
BONES & JOINTS
Barefoot Lifestyle Has Its Dangers
New Clues to How Fish Oils Help Arthritis Patients
Bone Loss Stable on Restricted Calorie Diet
CANCER
Seaweed May Help Treat Lymphoma
Adding Garlic Might Cut Cancer Risk
Higher Vitamin D Intake Could Cut Cancer Risk
CAREGIVING
Acute Respiratory Distress Syndrome as Deadly as Ever
Older Caregivers Prone to Worse Sleep Patterns
U.S. Mental Health Spending Rises, But Many Still Left Out
CIRCULATORY SYSTEM
Review Confirms Links Between Diet, Heart Health
Grapefruit-Heavy Diet Helped Spur Dangerous Clot
Secondhand Smoke Quickly Affects Blood Vessels
COSMETIC
Mouse Study Finds Molecule That Tells Hair to Grow
Contact Lenses Boost Kids' Self-Image
New Genetic Links to Baldness Discovered
DENTAL, ORAL
Mom's Vitamin D Levels Affect Baby's Dental Health
Most Insured Adults Worry About Health Care Costs: Poll
Holistic Dentistry-My View
DIABETES
Spices, Herbs Boost Health for Diabetics
Study Shows Turmeric May Prevent Type 2 Diabetes
Fructose-Sweetened Drinks Up Metabolic Syndrome Risk
DIET, NUTRITION
Research Confirms How Valuable A Healthy Lifestyle Can Be
Coffee Beans May Be Newest Stress-Buster
Olive Oil May Be Key to Mediterranean Diet's Benefits
DISABILITIES
Could Your Cell Phone Help Shield You From Alzheimer's?
Review Finds Marijuana May Help MS Patients
ENVIRONMENTAL HEALTH
Gas Cooking Might Up Your Cancer Risk
Exhaust From Railroad Diesel Linked to Lung Ailments
Topical Drugs May Pollute Waterways
EYE CARE, VISION
When Gauging Age, the Eyes Have It
Green Tea May Ward Off Eye Disease
Stem Cells Repair Damaged Corneas in Mice
FITNESS
Have Fun This Summer, But DO Be Careful
Vigorous Exercise Can Cut Breast Cancer Risk
After a Stroke, Light Exercise Gets Hands, Arms Working Again
GASTROINTESTINAL PROBLEMS
Peppermint Oil, Fiber Can Fight Irritable Bowel
Olive Oil May Protect Against Bowel Disease
New Yogurt May Ease Stomach Ulcers
GENERAL HEALTH
Most Fast-Food French Fries Cooked in Unhealthiest Oil
For Women, Moderate Midlife Drinking Linked to Healthier Old Age
Play Creatively as a Kid, Be a Healthier Adult
HEAD & NECK
Many Children Will Outgrow Headaches
Ski Helmets Encouraged for All
Zen May Thicken Brain, Thwart Pain
HEALTH & TECHNOLOGY
Airport Full Body Scanners Pose No Health Threat: Experts
Combating Myths About Seasonal Allergies
Using Light Therapy to Silence Harmful Brain Activity
HEARING
Noise Hurts Men's Hearing More, Study Shows
Summer Sounds Can Lead to Hearing Loss
HEART & CARDIOVASCULAR
Drinking Your Way to Health? Perhaps Not
Dark Chocolate May Lower Stroke Risk
Fewer Heart Attacks After England Goes Smoke-Free
INFECTIOUS DISEASE
Swine Flu Closes Three Schools in NYC
More Medicinal Uses for Pomegranate
Surgical Masks Could Prevent Flu, Maybe
INFERTILITY
Obesity May Affect Fertility in Young Womene
KID'S HEALTH
Traffic, Dust Linked to Asthma in Kids
Breast-Feeding May Protect a Woman's Heart
Exercise in Adolescence May Cut Risk of Deadly Brain Tumor
MEN'S HEALTH
Soy Linked to Low Sperm Count
Varicose Veins May Mask Larger Problem
Whole Grains, Bran May Fight Hypertension in Men
MENTAL HEALTH
Mind Exercise Might Help Stroke Patients
Keeping Mentally Active Seems To Keep The Brain Active
Consciousness Helps the Mind and Body Work Together
PAIN
'Cell Phone Elbow' -- A New Ill for the Wired Age
Alleviating Rheumatoid Arthritis
Are We Exercising Pain Away? Not So Much.
PHYSICAL THERAPY
PREGNANCY
Obesity May Affect Fertility in Young Womene
Placebo Acupuncture Tied to Higher IVF Pregnancies
Heart Defects in Newborns Linked to Antidepressants
SENIORS
Older Adults May Have Some Immunity to Swine Flu
Fitness Fades Fast After 45
Vitamin D May Help Keep Aging at Bay
SEXUAL HEALTH
SLEEP DISORDERS
Pay Attention to Signs That Say You're Too Fatigued to Drive
Moderate Aerobics May Ease Insomnia Symptoms
Better Sleep, Grades Seem to Go Up
WOMEN'S HEALTH
Acupuncture May Relieve Acid Indigestation In Pregnancy
Soy May Not Lead to Denser Breasts
Sleeping Could Help Women Lose The Baby Fat
Add your Article

Brain Adapts to Age-Related Eye Disease

TUESDAY, March 3 (HealthDay News) -- When macular degeneration causes one to start losing his or her sight, the affected neurons simply start seeking visual input from other, non-affected parts of the eye, Massachusetts Institute of Technology researchers report.

"This study shows us one way that the brain changes when its inputs change. Neurons seem to want to receive input: When their usual input disappears, they start responding to the next best thing," senior author Nancy Kanwisher, of MIT's McGovern Institute for Brain Research, said in an university news release.

The researchers found when the cells in the fovea, the part of the retina responsible for the central field of vision, were damaged by macular degeneration (MD) -- the neuron attached to them begin responding to stimuli in an undamaged section -- a type of internal reorganization of the eye's visual map as opposed to the cortex's work being shifting to other neurons.

"Our study shows that the changes we see in neural response in people with MD are probably driven by the lack of input to a population of neurons, not by a change in visual information-processing strategy," Kanwisher said.

The findings are published in the March 4 issue of the Journal of Neuroscience.

Macular degeneration, the most common form of adult blindness, affects almost 2 million people in the United States. Patients often compensate for lack of central vision by rolling their eyes upward so they can utilize the preferred retinal locus (PRL), an undamaged area under and adjacent to the affected part of the retina.

"Macular degeneration is a great opportunity to learn more about plasticity in the adult cortex," Kanwisher said.

More information

The U.S. National Eye Institute has more about macular degeneration.



-- Kevin McKeever



SOURCE: Massachusetts Institute of Technology, news release, March 3, 2009

Last Updated: March 03, 2009

Copyright 2009 ScoutNews, LLC. All rights reserved.

More articles at www.eholistic.com