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ScienceDaily: Mind & Brain News |
| Tangled messages: Tracing neural circuits to chemotherapy's 'constellation of side effects' Posted: 07 Jan 2022 02:33 PM PST Cancer patients undergoing chemotherapy can experience severe side effects that persist long after treatments end. A new study has found a novel pathway for understanding why these debilitating conditions happen -- and why scientists should focus on 'all of the possible neural processes that deliver sensory or motor problems to a patient's brain' and not just those that occur away from the center of the body. |
| How the brain’s blue spot helps us focus our attention Posted: 07 Jan 2022 09:14 AM PST How can we shift from a state of inattentiveness to one of highest attention? The locus coeruleus, literally the 'blue spot,' is a tiny cluster of cells at the base of the brain. As the main source of the neurotransmitter noradrenaline, it helps us control our attentional focus. Synthesizing evidence from animal and human studies, scientists have now developed a novel framework describing the way the blue spot regulates our brain's sensitivity to relevant information in situations requiring attention. |
| Exercise alters brain chemistry to protect aging synapses Posted: 07 Jan 2022 07:09 AM PST When elderly people stay active, their brains have more of a class of proteins that enhances the connections between neurons to maintain healthy cognition, a new study has found. |
| Posted: 07 Jan 2022 07:06 AM PST A philosophy team analyzed the role self-deception plays in everyday life and the strategies people use to deceive themselves. The team described four strategies used to stabilize and shield the positive self-image. According to their theory, self-deception helps people to stay motivated in difficult situations. |
| Teens not getting enough sleep may consume 4.5 extra pounds of sugar during a school year Posted: 07 Jan 2022 05:44 AM PST The results found that teenagers undergoing short sleep consumed more foods that were likely to spike blood sugar fast -- things like foods high in carbs and added sugar, or sugary drinks, compared to when they were in healthy sleep. |
| Risk of overactive bladder associated with medications for dementia Posted: 06 Jan 2022 12:24 PM PST A study evaluating the risk of overactive bladder as a side effect of cholinesterase inhibitor drugs taken for dementia and Alzheimer's disease, finds that one drug -- Donepezil -- is linked to increased risk of the distressing side effect. |
| Clinicians report real-world results on the use of a new device to treat brain aneurysms Posted: 06 Jan 2022 11:36 AM PST In an international study of patients with brain aneurysms (balloon-like bulges in weakened blood vessels), the Woven Endobridge device had a favorable efficacy and safety profile. |
| In Down syndrome cells, genome-wide disruptions mimic a senescence-like state Posted: 06 Jan 2022 08:15 AM PST Extra chromosome alters chromosomal conformation and DNA accessibility across the whole genome in neural progenitor cells, disrupting gene transcription and cell functions much like in cellular aging. |
| Can a human microglial atlas guide brain disorder research? Posted: 06 Jan 2022 08:15 AM PST Researchers analyzed thousands of microglia from different brain regions of deceased patients who had been diagnosed with a variety of neuropsychiatric and neurodegenerative disorders. Their results support the idea that microglia may play critical roles in some cases of brain disease while also providing a potentially valuable guide for future studies. |
| New hope for sight recovery in stroke survivors Posted: 06 Jan 2022 07:59 AM PST Researchers have used MRI imaging to map visual brain activity in stroke survivors with sight loss that gives new hope for rehabilitation and recovery. |
| Posted: 06 Jan 2022 07:04 AM PST Thyroid hormone levels during pregnancy may predict preschool boys' emotional and behavioral problems, according to a new study. |
| Marijuana users’ risk of deadly complication doubles after rare type of bleeding stroke Posted: 06 Jan 2022 07:03 AM PST Among adults with a certain type of bleeding stroke, those who used marijuana within the last 3-30 days were more than twice as likely to develop a serious stroke complication that increases the risk of death and disability. The study is the largest to examine the impact of THC, the mood-changing ingredient in marijuana, on complications after a bleeding stroke. |
| Living in outer space: Changes in blood flow volume may be at the heart of worsening eyesight Posted: 05 Jan 2022 10:45 AM PST The long-term risks of living in space include bone loss, cosmic radiation and muscle weakness, so leaving gravity behind certainly has its obstacles -- and yet, that doesn't stop people from venturing out of the stratosphere. Some of these potential hurdles have already been studied extensively or are currently being investigated, but researchers have found an important but underserved area of space to study: the brain and gravity's effect on eyesight. |
| Virtual reality could help make therapy easier Posted: 05 Jan 2022 08:14 AM PST A new study has found 30 per cent of people prefer to talk about their negative experiences with a virtual reality avatar, rather than a person. |
| School closures led to more sleep and better quality of life for adolescents Posted: 05 Jan 2022 08:13 AM PST The school closures in spring 2020 had a negative effect on the health and well-being of many young people. But homeschooling also had a positive flipside: Thanks to sleeping longer in the morning, many teenagers reported improved health and health-related quality of life. The study authors therefore believe school days should begin later in the morning. |
| Drug modifies epigenome in aggressive brain tumors Posted: 05 Jan 2022 07:31 AM PST The researchers showed for the first time that the DNA methylome of these brain tumors can be reprogrammed. The study said that this is the first time DNA methylome reprogramming has occurred with any solid human tumor. |
| Babies born during pandemic's first year score slightly lower on a developmental screening test Posted: 04 Jan 2022 08:22 AM PST Babies born during the pandemic's first year -- even to moms who did not have COVID during pregnancy -- scored lower on a screening test of social and motor skills compared to pre-pandemic babies, according to a new study. |
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