News tagged with impulsivity
The secret lives, and deaths, of neurons
As the human body fine-tunes its neurological wiring, nerve cells often must fix a faulty connection by amputating an axon—the "business end" of the neuron that sends electrical impulses to tissues or other ...
Neuroscience
4 hours ago |
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Researchers identify how cells control calcium influx
(Medical Xpress)—When brain cells are overwhelmed by an influx of too many calcium molecules, they shut down the channels through which these molecules enter the cells. Until now, the "stop" signal mechanism that cells ...
Neuroscience
May 09, 2013 |
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App lets amputees program their own bionic hands
Double-amputee Jason Koger used to fly to visit a clinician when he wanted to adjust the grips on his bionic hands. Now, he's got an app instead. Koger this week demonstrated the i-limb ultra revolution, ...
Other
May 03, 2013 |
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Study indicates reverse impulses clear useless information, prime brain for learning
(Medical Xpress)—When the mind is at rest, the electrical signals by which brain cells communicate appear to travel in reverse, wiping out unimportant information in the process, but sensitizing the cells ...
Neuroscience
Mar 19, 2013 |
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Deep brain stimulation studies show how brain buys time for tough choices
Take your time. Hold your horses. Sleep on it. When people must decide between arguably equal choices, they need time to deliberate. In the case of people undergoing deep brain stimulation (DBS) for Parkinson's disease, that ...
Neuroscience
Sep 25, 2011 |
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Predicting repeat offenders with brain scans: You be the judge
(Medical Xpress)—Despite the well known inaccuracies of polygraph lie detectors, they remain in widespread, if selective, use by the criminal justice system. While they are far from truth machines, if the ...
Neuroscience
Mar 26, 2013 |
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Blocking protein expression delays onset of multiple sclerosis in mice, study says
(Medical Xpress)—Blocking the expression of just one protein in the brain delays the onset of paralysis in mice with a form of multiple sclerosis, say researchers at the School of Medicine.
Medical research
May 10, 2013 |
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Neurons derived from cord blood cells may represent new therapeutic option
For more than 20 years, doctors have been using cells from blood that remains in the placenta and umbilical cord after childbirth to treat a variety of illnesses, from cancer and immune disorders to blood ...
Medical research
Jul 16, 2012 |
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Ordinary heart cells become 'biological pacemakers' with injection of a single gene
Cedars-Sinai Heart Institute researchers have reprogrammed ordinary heart cells to become exact replicas of highly specialized pacemaker cells by injecting a single gene (Tbx18)–a major step forward in the decade-long search ...
Medical research
Dec 16, 2012 |
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Turning Alzheimer's fuzzy signals into high definition
Scientists at the Virginia Tech Carilion Research Institute have discovered how the predominant class of Alzheimer's pharmaceuticals might sharpen the brain's performance.
Neuroscience
May 07, 2013 |
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Weight gain linked with personality trait changes
People who gain weight are more likely to give in to temptations but also are more thoughtful about their actions, according to a new study published in Psychological Science, a journal of the Association for Psychological Scienc ...
Psychology & Psychiatry
May 06, 2013 |
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Hold that thought? Scientists find sensor that may explain working memory
(Medical Xpress) -- In many cases, a delay occurs between the time you are presented information and the time you respond with an action or decision. Most of us call it a thought, while some scientists call it working memory.
Neuroscience
Dec 21, 2011 |
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Brains of addicts are inherently abnormal: study (Update)
(Medical Xpress) -- Researchers funded by the Medical Research Council (MRC) at the University of Cambridge have identified a brain abnormality which is found in drug-dependent individuals as well as their ...
Neuroscience
Feb 02, 2012 |
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Australians implant 'world first' bionic eye
Australian scientists said Thursday they had successfully implanted a "world first" bionic eye prototype, describing it as a major breakthrough for the visually impaired.
Ophthalmology
Aug 30, 2012 |
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Mystery disease solved by gene experts
(Medical Xpress)—A global team of researchers has identified the gene behind an Australian toddler's paediatric brain disorder in a discovery that is paving the way for the diagnosis and treatment of other ...
Genetics
May 03, 2013 |
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Impulsivity
Impulsivity (or impulsiveness) is a personality trait characterized by the inclination of an individual to initiate behavior without adequate forethought as to the consequences of their actions, acting on the spur of the moment. Eysenck and Eysenck related impulsivity to risk-taking, lack of planning, and making up one's mind quickly. Impulsivity has been shown to be a major component of various neuropsychiatric disorders such as ADHD, substance abuse disorders and bipolar disorder. Impulsivity has been shown to have a genetic component and may be inheritable. Abnormal patterns of impulsivity may also be an acquired trait as a result of various neurodegenerative diseases, traumatic brain injury (TBI), hypoxic ischemic encephalopathy, intrauterine hypoxia, bacterial or viral infections or neurotoxicity as a result of chemical exposure. The orbitofrontal cortex and right inferior frontal gyrus have been shown to play a part in impulse control.
As a personality trait, impulsivity is part of normal behavior as it contributes to adaptive functioning. To do something and not be aware, especially for young children, is relatively common. Recent psychological research has suggested that there are various facets of impulsivity. Some researchers have proposed a 3-factor model according to impulsivity; attentional ("getting easily bored"), motor ("going into action") and cognitive ("inability to plan") factors. Recent theories have suggested five separate aspects of impulsivity:
For more information about Impulsivity, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
