Dopamine is
a brain signalling chemical that is vital for our control of movement.
Parkinson's disease is caused by loss of
the brain signaling chemical dopamine and affects about 1 million people in the United States.
Not exact matches
The
chemical tells individual neurons to fire off a
signal or not, influencing other
brain signals and pathways, and essentially serves as a traffic cop of motivation, emotion, and social behavior.
Love is an emotion, a mix of hormones,
chemicals, and electrical
signals in the
brain and body.
However, I do not believe that it could not possibly survive the death of the body because it is embodied in the unique patterns of electrical and
chemical signals in the
brain.
That initial swoon over a new baby is more than just love; it's a series of
chemicals signaling the
brain to care for this helpless infant, and ultimately can help explain the survival of our species.
Their electrical and
chemical signals can be detected, recorded and interpreted, and their
chemicals can be identified; the connections that constitute the
brain's woven feltwork can be mapped.
The thinking that happens inside your
brain can be traced to
chemical signals passing between neurons, and those
chemicals move the way they do because of electromagnetism.
Was there a
chemical or genetic
signal that induced stem cells to create the complex structures of the body and
brain?
The scientists observed that transmission of
chemical signals between the nerve cells are facilitated by AMPA - receptors and the activity occurs on the
brain cell surface.
These thin, tubelike structures transmit electrical and
chemical signals that are vital for carrying information among different regions of the
brain.
Recent research has shown that the cascade of
signals in the proinflammatory immune response tend to cause the amino acid tryptophan to break down into kynurenic acid rather than serotonin, a
brain chemical that influences mood.
To discover this, Hui Liu, Gene Robinson, and Eric Jakobsson of the University of Illinois developed new computational tools to analyze patterns of gene conservation across a wide range of animals, for genes activated and inhibited in the honey bee
brain by exposure to a
chemical communication
signal that triggers alarm.
In the hippocampus and the amygdala, areas of the
brain thought to be associated with episodic memory, researchers had shown that the
chemical signaling agent called glutamate acts like a key in the lock of some of these protein «flood gates.»
The
brain uses the
chemical to communicate between cells, and dopamine
signals different events depending on its location.
Parkinson's disease is caused by the death of neurons in the
brain that produce dopamine, a
chemical that shuttles
signals between neurons and is responsible for controlling the body's movement.
Multiple sclerosis (MS) is caused by immune cells that activate a cascade of
chemicals in the
brain, attacking and degrading the insulation that keeps neuronal
signals moving.
Ultimately, these neurons form a circuit between the
brain and the target tissue through which
chemical and electrical
signals are relayed.
Nerve cells in the
brain, or neurons, are known to communicate among themselves by transmitting electrical
signals, aided by
chemical signaling at the synapses connecting the neurons.
What was especially «exciting» about this finding, he says, is that these variations were near a neural highway that previous studies have shown helps regulate life span in worms and flies, and that stopping
chemical signals from this
brain pathway extends the life span of mice.
In the
brain, cytokines can disrupt the production and release of several important
signaling chemicals, including serotonin, dopamine and glutamate, which help control emotion, appetite, sleep, learning and memory.
It was originally investigated in 1995 by pharmacologist Franco Borsini and a team of researchers at Boehringer Ingelheim Italia in Milan as an antidepressant because of its ability to regulate neurotransmitters — the
brain's
chemical -
signaling molecules.
Although the scientists can't assume hospitalization is directly causing suicide, they say their work backs up a hot theory that inflammation — one of the body's main defenses against infection — influences depression by generating a
chemical that interferes with
brain signaling.
Though the
brain is better understood than it was a generation ago, Vorstman says, how its intricate dance of
chemical and electrical
signals gives rise to mind and personality remains mysterious.
In the
brains of all vertebrates, information is transmitted through synapses, a mechanism that allows an electric or
chemical signal to be passed from one
brain cell to another.
The researchers speculated that
brain cells might be particularly reliant on their mitochondria to power the production and recycling of the
chemical signals they use to transmit information.
They are thought to work by blocking the reabsorption of the neurotransmitter serotonin in the
brain, leaving more of it available to help
brain cells send and receive
chemical signals, thereby boosting mood.
Studies in animals indicated that in branches of the nerve that exit from the back of the
brain and wrap around various parts of the face and head, overactive cells would respond to typically benign lights, sounds and smells by releasing
chemicals that transmit pain
signals and cause migraine.
Receptors facilitate
chemical and electrical
signals between neurons in the
brain, allowing those neurons to communicate with each other.
The drug boosted dopamine, a
brain chemical involved in pleasure and motivation, equivalently, but pair - bonded voles had fewer receptors ready to receive the dopamine
signal.
These electrical pulses travel along specialized extensions called axons to cause the release of
chemical signals elsewhere in the
brain.
Some of the pinpointed genes are known to be involved in the function of synapses, tiny connectors that allow
brain cells to communicate with each other through electrical and
chemical signals.
We may owe some of our unique intelligence to a generous supply of a
signalling chemical called dopamine in
brain regions that help us think and plan.
This
brain chemical (also known as a neurotransmitter) helps nerve cells to send
signals to other nerve cells.
By telling
brain cells when they have struck gold, the
chemical apparently
signals them to keep doing whatever they did that led to success.
The researchers looked in rats»
brains for the genetic instructions needed to make a key «pleasure receptor,» called D2, that allows
brain cells to receive
signals sent by the
brain chemical dopamine — or cocaine.
From there, the
chemical races into the
brain's appetite centre, in the hypothalamus, and shuts down neurons involved in
signalling hunger, Shulman's team found.
Rose and neuroscience doctoral student Rishi Alluri used a novel combination of recording electrical activity of single
brain cells and blocking neurotransmitter
chemicals that carry nerve
signals from one nerve cell or neuron to the next.
Dopamine is a
chemical messenger aiding the transmission of
signals in the
brain and other areas of the body.
And there's some evidence of similarly disrupted patterns of
chemical signalling in the
brains of people with sleep disorders and ADHD.
Dopamine, long reputed to be the
brain chemical that
signals pleasure, turns out to have more to do with wanting than with liking.
The flimsy molecular pen may help map the
brain's
chemical circuitry and decipher the
signals that control the beating heart.
January 4, 2006
Chemical signaling helps regulate sensory map formation in the
brain Researchers from the University of Chicago have uncovered an important mechanism used by the developing
brain to pattern nerve connections in the part of the
brain that interprets visual
signals.
In the tiny
brain space where two nerve cells meet,
chemical and electric
signals shuttle back and forth, a messaging system that ebbs and flows in those synaptic spaces, sometimes in ways that scientists believe aid and abet learning and memory.
Brain cells communicate with each other by firing off tiny
chemical and electrical
signals.
The model also activates markers for cells that have the classic excitatory and inhibitory functions in the
brain, and that enable
chemical signals to travel throughout the structure.
Kehr, J.; Yoshitake, T. Monitoring
brain chemical signals by microdialysis.
In the course of this work, he has pioneered several new approaches in the fruit fly that have had important implications for mammalian neurobiology, including: the demonstration that the fruit fly has a sleep - like behavior similar to that of mammals, studies of physiological and behavioral consequences of mutations in a neurotransmitter system affecting one of the
brain's principal
chemical signals, studies making highly localized genetic alterations in the nervous system to alter behavior, and molecular identification of genes causing naturally occurring variation in behavior.
This state of arousal involves neurons in the fly's
brain that respond to the female's
chemical signal and generate self - sustaining patterns of
brain activity that persist well beyond the original sensory input.
Sperry suggested that
chemical signals, probably present in concentration gradients, serve as positional landmarks within the
brain.