Neuroscience

Mapping the neurons of the rat heart in 3-D

An interdisciplinary team of researchers has developed a virtual 3-D heart, digitally showcasing the heart's unique network of neurons for the first time. Using the rat heart as a model, the investigators in this study—appearing ...

Medical research

Preclinical study offers hope for Hirschsprung's disease

Babies with Hirschsprung's disease are born with an incomplete or absent gut nervous system. Children's Hospital Los Angeles investigator Tracy Grikscheit, MD, runs a laboratory that investigates the therapeutic potential ...

Neuroscience

Researchers publish study on nerve cell repair

Researchers from the University of Colorado School of Medicine have identified a new way that cells in the central nervous system regenerate and repair following damage.

Neuroscience

Gut microbiome influences ALS outcomes

Harvard University scientists have identified a new gut-brain connection in the neurodegenerative disease amyotrophic lateral sclerosis, or ALS. The researchers found that in mice with a common ALS genetic mutation, changing ...

Alzheimer's disease & dementia

Psoriasis tied to higher Alzheimer disease risk

(HealthDay)—The incidence of Alzheimer disease (AD) is significantly higher in patients with psoriasis versus individuals without psoriasis, according to a Korean study published online April 15 in Scientific Reports.

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Nervous system

The nervous system is a network of specialized cells that communicate information about an organism's surroundings and itself. It processes this information and causes reactions in other parts of the body. It is composed of neurons and other specialized cells called glial cells,(plural form glia), that aid in the function of the neurons. The nervous system is divided broadly into two categories: the peripheral nervous system and the central nervous system. Neurons generate and conduct impulses between and within the two systems. The peripheral nervous system is composed of sensory neurons and the neurons that connect them to the nerve cord, spinal cord and brain, which make up the central nervous system. In response to stimuli, sensory neurons generate and propagate signals to the central nervous system which then processes and conducts signals back to the muscles and glands. The neurons of the nervous systems of animals are interconnected in complex arrangements and use electrochemical signals and neurotransmitters to transmit impulses from one neuron to the next. The interaction of the different neurons form neural circuits regulate an organism's perception of the world and what is going on with its body, thus regulating its behavior. Nervous systems are found in many multicellular animals but differ greatly in complexity between species.

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