Hello! My name is Matías Morales. I am studying biochemistry in the neuroscience laboratory at the Universidad de Santiago de Chile (also called USACH). We study the NKCC1 channel role in the hippocampus in a model of autism in rats using electrophysiology methods. During hippocampal development, the concentrations of the channels responsible for regulating intracellular […]

— Written by Carla Contreras Mena — Hello! Carla Contreras Mena from Santiago, Chile, here again. Welcome to the conclusion of my work during my internship with Backyard Brains. Experiment Update In the last few months, I’ve had to study more about plants. Why? Because, In my daily life in the laboratory, I’m not very familiar with the […]

— Written by Carla Contreras Mena — Hello, I’m Carla Contreras Mena, a student of Biochemistry at the University of Santiago of Chile (which we locally call Usach). I currently work in a Neuroscience Laboratory with professor Dr. Patricio Rojas, where we are investigating the neurophysiological difference of electrical activity in the mouse hippocampus between a […]

Editor’s note: This is Part II. You can read Part I here. Danae Hello, I am Danae Madariaga, a senior at Alberto Blest Gana high school. I have participated in a data collection project with Etienne, Tim, and Derek for three months. Throughout this time, I have learned many things such as the use of Google Colab […]

DESCRIPTION Update June, 2017: My paper was published! Check it out here in JUNE (Journal of Undergraduate Neuroscience Education). … Why are grasshoppers so hard to catch?! I aim to study the neuroscience behind this question by replicating past studies on grasshopper vision. Grasshoppers can sense an approaching object and quickly hop away to avoid collision with the object […]

With the ideal ITI determined, I can move on to the set of core experiments: testing to see how the DCMD neuron behaves when simulated black balls of different sizes and velocities approach the grasshopper’s exposed eye. So my little friends spend about 2 hours on top of the SpikerBox for these experiments. I continue to […]

Now that I’ve collected ample data for the “classic” experiment of testing the DCMD response to objects approaching at various sizes and velocities, I want to keep exploring grasshopper vision. So far, the iPad screen is kept at maximum brightness, so the contrast between the white background and the black ball is high and clear. […]

In the ‘Preliminary data‘ log, I had begun my data collection and analysis journey. I first performed the intertrial interval, or ITI, test, to determine the ideal time between 2 stimuli so that the time is long enough to avoid the grasshoppers’ habituation to the simulated balls. The results figures I showed in that previous […]

In the project instructions, I’ve briefly talked about the BYB SpikeRecorder app that I’ve been using on an iPad to add to my grasshopper vision project the flavor of a low-cost-and-DIY-albeit-of-great-quality tool. Here, I’ll talk about it in a bit more details to give the spotlight to one of the main components of my project. Firstly, […]

As I experiment on more and more little grasshoppers, I realize the importance of organization skills. Specifically, I’m talking about how messy my housekeeping of the recordings and analyses have been. In an earlier post, I wrote that my naming system for each grasshopper is in the following format: [day][month][letter indicating order in the day]. […]

By Patrick Glover DETAILS A longstanding debate in philosophy focuses on the existence of free will. Do humans have some inherent moral agency, or are our brains just biological machines, subject to the same physical determinism as any other animal? Modern neuroscience can provide some insight to these questions, such as Benjamin Libet’s famous 1986 experiments that […]

DESCRIPTION Do you consistently think “breathe in, breathe out” or “left, right, left, right” when you’re walking? Unless you’re London Tipton (http://dai.ly/x31iwo0?start=346 to 6:02), you probably don’t. How is this possible? All humans have neural networks called central pattern generators (CPGs) that control rhythmic movements like breathing and walking. Unfortunately, it is nearly impossible to study […]