Thursday, November 27, 2014

Marketing rather than medicine may have led to a global surge in ADHD diagnosis

Marketing rather than medicine may have led to a global surge in ADHD diagnosis


"....You can't catch attention deficit hyperactivity disorder (ADHD). Yet the diagnosis and treatment of this behavioral condition is spreading like a contagion -- surging as much as tenfold in some countries.
Call it an economic and cultural plague, but not necessarily a medical one, says Brandeis professor Peter Conrad. In a recent paper in the journal Social Science and Medicine, Conrad and coauthor Meredith Bergey examined the growth of ADHD in the United Kingdom, Germany, France, Italy and Brazil....."
Comment: Read more by clicking the title above. Abstract of article here: http://www.sciencedirect.com/science/article/pii/S0277953614006650



Wednesday, November 26, 2014

White matter in the older brain is more plastic than in the younger brain

White matter in the older brain is more plastic than in the younger brain

Those brains that are chronologically enhanced can learn new things too!

".............Visual perceptual learning (VPL) with younger subjects is associated with changes in functional activation of the early visual cortex. Although overall brain properties decline with age, it is unclear whether these declines are associated with visual perceptual learning. Here we use diffusion tensor imaging to test whether changes in white matter are involved in VPL for older adults. After training on a texture discrimination task for three daily sessions, both older and younger subjects show performance improvements. While the older subjects show significant changes in fractional anisotropy (FA) in the white matter beneath the early visual cortex after training, no significant change in FA is observed for younger subjects. These results suggest that the mechanism for VPL in older individuals is considerably different from that in younger individuals and that VPL of older individuals involves reorganization of white matter............"


Tuesday, November 25, 2014

Visual and Vestibular Connections

Visual and Vestibular Connections


At the COVD Annual Meeting in San Diego, Dr. Baxtrom presented a lecture entitled “How to Vestibularly Make Optometric Vision Therapy More Effective.” In therapy, many of us incorporate the vestibular system without even thinking about it. Dr. Baxtrom shared the science behind the visual and vestibular systems and how to enhance the connection to improve therapy.

Read more about this on the COVD blog by clicking here: https://covdblog.wordpress.com/2014/11/25/visual-and-vestibular-connections/