Crying Can Strengthen Relationships, Study Shows

Physically, crying is known to be a symptom of pain or stress. But a Tel Aviv University evolutionary biologist points to empirical evidence showing that tears have emotional benefits and can make interpersonal relationships stronger. New analysis shows that tears still signal physiological distress, but they also function as an evolution-based mechanism to bring people…

Ferritin Identified In Parkinson’s Neuromelanin Granules

Evidence of ferritin in the neuromelanin granules in Parkinson’s disease affected brain cells has been observed for the first time. A team of researchers from the University of Bochum working under the auspices of Prof. Katrin Marcus and in close collaboration with colleagues in Munich and Würzburg made the finding. Neurons that produce the neurotransmitter…

What Is Magnetic Resonance Imaging?

Magnetic resonance imaging (MRI) is a medical imaging technique used in radiology to form pictures of the anatomy and the physiological processes of the body in both health and disease. MRI scanners use strong magnetic fields, radio waves, and field gradients to generate images of the inside of the body. MRI does not involve x-rays,…

What Is A Longitudinal Study?

A longitudinal study is a quasi-experimental research design that involves repeated observations of the same variables (e.g., people) over long periods of time, often many decades (i.e., uses longitudinal data). It is often a type of observational study, although they can also be structured as longitudinal randomized experiments. Longitudinal studies are often used in psychology,…

How the Brain Sees 3D Motion

Using fMRI (functional magnetic resonance imaging) researchers have now pinpointed where and how the brain processes 3-D motion. Surprisingly, findings published in Nature Neuroscience online July 7, 20091, reveal that 3-D motion processing occurs in an area in the brain, located just behind the left and right ears, long thought to only be responsible for…

What Are Ion Channels?

Ion channels are porous transmembrane proteins which help regulate the voltage gradient across the plasma membrane by allowing ions to diffuse through the pores down their electrochemical gradients. They all regulate the flow of ions across the plasma membrane with several protein subunits assembled in a circular arrangement with the narrowest area in the pore…

Do Migraines Reduce Breast Cancer Risk?

Migraine headaches in women are associated with a considerable reduction in breast cancer risk, a new study1 confirms. Published in the July 2009 issue of Cancer Epidemiology, Biomarkers and Prevention, it confirms research published last year by scientists at Fred Hutchinson Cancer Research Center. The more recent study discovered a 26 percent reduced risk of…

What Is The Prefrontal Cortex?

In mammalian brain anatomy, the prefrontal cortex (PFC) is the cerebral cortex which covers the front part of the frontal lobe. The PFC contains Brodmann areas 9, 10, 11, 12, 46, and 47. Many authors have indicated an integral link between a person’s personality and the functions of the prefrontal cortex. This brain region has…