Neuron All neurons are electrically excitable, maintaining voltage gradients across their membranes by means of metabolically driven ion pumps, which combine with ion channels embedded in the membrane to generate intracellular-versus-extracellular concentration differences of ions such as sodium, potassium, chloride, and calcium. Changes in the cross-membrane voltage can alter the function of voltage-dependent ion channels. If the voltage changes by a large enough amount, an all-or-none electrochemical pulse called an action potential is generated, which travels rapidly along the cell's axon, and activates synaptic connections with other cells when it arrives. Neurons do not undergo cell division. In most cases, neurons are generated by special types of stem cells.
Anatomy and Physiology animations Listed below are a collection of physiology animations and anatomy animations. These animations are intended to support text or lecture and it is important that they are not seen as stand-alone reference material. Notes: If you or your students discover any factual errors in the animations please let me know: firstname.lastname@example.org Some of the animations can only be accessed from the university network - please contact Liz Hodgson in the LDU if you would like them on WebCT so that students can access them externally.
bodies-in-motion - scott-eaton.com 30 second sequences from BiM Not long ago, I had twelve artists from Natural Motion (of Morpheme and Clumsy Ninja fame) into Somerset House, my home away from home, for a four day anatomy workshop. At the end of each day we would take about 20 minutes to draw from the Bodies in Motion library. sketching from BiM We made extensive use of the timer for gesture drawing. It can be set to 10fps, 1fps, 30sec, 1min, 2min, or 5mins, and ticks down to zero before flipping to the next frame of the motion sequence.
Functional magnetic resonance imaging Researcher checking fMRI images Functional magnetic resonance imaging or functional MRI (fMRI) is a functional neuroimaging procedure using MRI technology that measures brain activity by detecting associated changes in blood flow. This technique relies on the fact that cerebral blood flow and neuronal activation are coupled. When an area of the brain is in use, blood flow to that region also increases. Learning Styles Assessment Printer-Friendly Version Learning styles refer to the ways you prefer to approach new information. Each of us learns and processes information in our own special ways, though we share some learning patterns, preferences, and approaches. Knowing your own style also can help you to realize that other people may approach the same situation in a different way from your own.
Making Sense of the World, Several Senses at a Time Our five senses–sight, hearing, touch, taste and smell–seem to operate independently, as five distinct modes of perceiving the world. In reality, however, they collaborate closely to enable the mind to better understand its surroundings. We can become aware of this collaboration under special circumstances. In some cases, a sense may covertly influence the one we think is dominant. Anatomy and Physiology Learning Modules - CEHD - U of M Quiz Bowl and Timed Test were retired at the end of summer 2013. Quiz Bowl had always been buggy, as many people had pointed out, and it had become difficult to maintain. It also used technology that doesn’t work on a lot of newer computers or tablets.
Visible Body 3D Anatomy Atlas - Приложения за Android в Google Play The Human Anatomy application is a SIMPLE, attractive educational quick reference app to learn about human body It contain material including:it description of each element represented below in deatil Head to Neck Human Brain: Introduction of Human Brain, Brain Structures and their Functions, Parts of the Human Brain, How Your Brain Works, Human Brain Facts, Brain disorders, Key Points Human Eyes: Introduction, Parts of Human Eye & Their Functions, How the Human Eye Works, Eye Problems, Facts about Human Eye
Diffusion MRI Diffusion MRI (or dMRI) is a magnetic resonance imaging (MRI) method which came into existence in the mid-1980s. It allows the mapping of the diffusion process of molecules, mainly water, in biological tissues, in vivo and non-invasively. Molecular diffusion in tissues is not free, but reflects interactions with many obstacles, such as macromolecules, fibers, membranes, etc. Water molecule diffusion patterns can therefore reveal microscopic details about tissue architecture, either normal or in a diseased state. The first diffusion MRI images of the normal and diseased brain were made public in 1985. Since then, diffusion MRI, also referred to as diffusion tensor imaging or DTI (see section below) has been extraordinarily successful. Its main clinical application has been in the study and treatment of neurological disorders, especially for the management of patients with acute stroke.
Online Creative Writing Courses Offered Free by Top Universities and Educational Websites Getting Educated for Free 1. Introductory Courses The Brain: A Body Fit for a Freaky-Big Brain Aiello and Wheeler noted that this dramatic increase in brain size would seem to have required a dramatic increase in metabolism—the same way that adding an air-conditioning system to a house would increase the electricity bill. Yet humans burn the same number of calories, scaled to size, as other primates. Somehow, Aiello and Wheeler argued, our ancestors found a way to balance their energy budget. As they expanded their brains, perhaps they slimmed down other organs.
Creative Writing 101 RJ Great article. Morning is definitely the time where I am most creative. I think it’s because my mind is the freshest and the least cluttered at this time of day. Doug Rosbury When I write, it is with an emphasis on the sharing of wisdom arising from my life experience. Wether one could reasonably term such writing as being creative or not I don’t necessarily concern myself with.
The Secrets of Your Brain's Zoom Lens Notice that, even as you fixate on the screen in front of you, you can still shift your attention to different regions in your peripheries. For decades, cognitive scientists have conceptualized attention as akin to a shifting spotlight that “illuminates” regions it shines upon, or as a zoom lens, focusing on things so that we see them in finer detail. These metaphors are commonplace because they capture the intuition that attention illuminates or sharpens things, and thus, enhances our perception of them. Some of the important early studies to directly confirm this intuition were conducted by NYU psychologist Marisa Carrasco and colleagues, who showed that attention enhances the perceived sharpness of attended patterns.