الثلاثاء، 3 يناير 2012

ScienceDaily: Latest Science News

ScienceDaily: Latest Science News


Effects of marijuana ingredients on brain functioning during visual stimuli evaluated

Posted: 02 Jan 2012 03:08 PM PST

Different ingredients in marijuana appear to affect regions of the brain differently during brain processing functions involving responses to certain visual stimuli and tasks, according to a new report.

Gestational diabetes and low socioeconomic status linked with increased risk of ADHD in offspring

Posted: 02 Jan 2012 03:08 PM PST

Children exposed to maternal gestational diabetes mellitus and low socioeconomic status, particularly in combination, appear to be at an increased risk of developing childhood ADHD, according to a new report.

Another potential risk factor for developing dementia and Alzheimer's disease in women

Posted: 02 Jan 2012 03:08 PM PST

A hormone derived from visceral fat called adiponectin may play a role as a risk factor for development of all-cause dementia and Alzheimer's disease in women, according to a new study.

Demographic and clinical factors appear associated with survival in patients with Parkinson's disease

Posted: 02 Jan 2012 03:08 PM PST

Demographics and clinical factors appear to be associated with survival in patients with Parkinson's disease, and the presence of dementia is associated with a significant increase in mortality, according to a new report.

School performance may be linked to physical activity

Posted: 02 Jan 2012 03:08 PM PST

A systematic review of previous studies suggests that there may be a positive relationship between physical activity and the academic performance of children.

Changes seen in cerebrospinal fluid levels before onset of Alzheimer's disease

Posted: 02 Jan 2012 03:08 PM PST

Cerebrospinal fluid levels of A²42 appear to be decreased at least five to 10 years before some patients with mild cognitive impairment develop Alzheimer disease dementia whereas other spinal fluid levels seem to be later markers of disease, according to a new report.

Schizophrenia diagnosis associated with progressive brain changes among adolescents

Posted: 02 Jan 2012 03:08 PM PST

Adolescents diagnosed with schizophrenia and other psychoses appear to show greater decreases in gray matter volume and increases in cerebrospinal fluid in the frontal lobe compared to healthy adolescents without a diagnosis of psychosis, according to a new report.

Outside temperatures, sun exposure and gender may trigger glaucoma

Posted: 01 Jan 2012 11:33 AM PST

When it comes to whether or not you will develop exfoliation syndrome -- an eye condition that is a leading cause of secondary open-angle glaucoma and increased risk of cataract as well as cataract surgery complications -- age, gender and where you live does matter.

New super-resolution microscope

Posted: 31 Dec 2011 11:44 AM PST

Optical microscopes are still second to none when it comes to analyzing biological samples. However, their low resolution, improved only in recent years in STED microscopes, continues to be a problem.

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