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BOLD signal BOLD fMRI is often used to measure the hemodynamic response resulting from changes in the oxygenation level in the blood vessels. Yet to be explained is the relationship between neuronal activity and the measured fMRI signal. In a seminal paper,  Ogawa et al., (1990) showed that blood-oxygenation-level-dependent (BOLD) constitutesRead More →

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  Esta imagem é um trabalho derivado de: 1. LadyofHats derivative work: Gabby8228 () [released into the Public domain], via Wikimedia Commons. *AND* 2. Zephyris: at the English language Wikipedia [GFDL (www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons. Este texto está licenciado com uma Licença Creative Commons – Atribuição-CompartilhaIgual 4.0Read More →

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As promised, here I am posting some more photos and videos taken in my backyard. I would like to acknowledge already some information about the opiliones I found on the Web:  Wikipedia is a nice first reference but I encourage you to check other sources;  The OmniPaper Project constitutes aRead More →

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Last year was another discovery year 🙂 Now from the garden. My backyard was an authentic zoo. We let the wild plants grow and all the little bugs and whatever animals loved it. And I loved that they love it!! There is also a cat coming once and a while.Read More →

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  This is a continuation of the spider tale   Going back to those days when I kept myself observing and rushing to my bedroom window to check for Madame Diadematus… Me and my spider…. By observing ‘her’ I end up thinking of how solitary she was and … thinkingRead More →

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One of the many phenomena that made me travel in some completely nonlinear route to be doing what I am doing today are spider webs or how spiders construct their webs. I remember reading years ago about a study on the effects of drugs on spiders behavior while building theirRead More →

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I managed to record this phenomena few weeks ago. It is not the best shot but you can still see the two groups dancing 🙂 I still don’t know what are they…Read More →

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Animals are smarter than you think. By Virginia Morell National Geographic, March 2008 In 1977 Irene Pepperberg, a recent graduate of Harvard University, did something very bold. At a time when animals still were considered automatons, she set out to find what was on another creature’s mind by talking toRead More →