Motion processing with two eyes in three dimensions

submitted by: rokers
The movement of an object toward or away from the head is perhaps the most critical piece of information an organism can extract from its environment. Such 3D motion produces horizontally opposite motions on the two retinae. Little is known about how or where the visual system combines these two retinal motion signals, relative to the wealth of knowledge about the neural hierarchies involved in 2D motion processing and binocular vision. Canonical conceptions of primate visual processing...
Authors: Alexander c. Huk, Lawrence k. Cormack, Thaddeus b. Czuba, Bas Rokers

Reducing backward masking through action game training

submitted by: renjieli
Action video game play enhances basic visual skills such as crowding acuity and contrast sensitivity (C. S. Green & D. Bavelier, 2007; R. Li, U. Polat, W. Makous, & D. Bavelier, 2009). Here, we ask whether the dynamics of perception may also be altered as a result of playing action games. A backward masking paradigm was used to test the hypothesis that action video game play also alters the temporal dynamics of vision. As predicted, action gamers showed reduced backward masking...
Authors: Renjie Li, Uri Polat, Fabien Scalz, Daphne Bavelier

Hemianopic and Quadrantanopic Field Loss, Eye and Head Movements, and Driving

submitted by: jowood
Purpose: To compare eye and head movements, lane keeping and vehicle control of drivers with hemianopic and quadrantanopic field defects with controls, and to identify differences in these parameters between hemianopic and quadrantanopic drivers rated safe to drive by a clinical driving rehabilitation specialist (CDRS) compared to those rated as unsafe. Methods: Eye and head movements and lane-keeping were rated in 22 persons with homonymous hemianopic defects and 8 with quadrantanopic...
Authors: Lanning Kline, Dawn Decarlo, Ronald Braswell, Michael Vaphiades, Jennifer Elgin, Gerald Mcgwin, Joanne Wood, Cynthia Owsley

Wnt/beta-catenin signaling is stimulated by alpha-Melanocyte-Stimulating Hormone in melanoma and melanocyte cells: implication in cell differentiation.

submitted by: bbellei
Wnt/?-catenin signaling plays important roles in many developmental processes including neural crest-derived melanocyte development and migration. However, the effective contribution of Wnt/?-catenin pathway in melanogenesis in adult human melanocytes has not been fully elucidated. Here, we report that in melanoma cells and in normal human melanocytes melanogenesis stimulation by ?-MSH induces phosphorylation of ?-catenin-Ser675 and stabilization of ?-catenin protein. Activation of PKA by...
Authors: Barbara Bellei

Synaptic Land - The Movie

submitted by: KidsJudgePartnership
The story of how two behavioral neuroscience graduate students from Oregon Health & Science University conceived and constructed the very first "Synaptic Land", a game that helps kids learn about processes involved in neurotransmission. Since its debut at the Oregon Kids Judge! Neuroscience Fair held at OMSI in 2002, undergraduate and graduate students at many other universities have created their own versions of the Synaptic Land game (e.g., PENN, University of Scranton, California...

Would You Like to Be a Mentor?

submitted by: KidsJudgePartnership

Introduction to mentoring opportunities for biomedical science students at Charles Drew University of Medicine and Science, Los Angeles CA. Discusses the Kids Judge! Los Angeles Biomedical Science Fair as well as classroom teaching opportunities at an elementary school in the neighborhood.