Tag: visual stimuli

Pre-preprint: blogging a project

SLAB is trying something new with one project in the lab. Prior to drafting a preprint, we’re blogging the project and sharing the results and analysis. We invite anyone to comment on the work.

Processing 2

One of the first posts in this blog was on Processing. Processing is a programming language with an integrated development environment that is specialized for simplicity– ease of learning and coding– and intended for applications that are primarily graphics-driven. Processing has seen continued development. Processing 2 is more OpenGL based, and for many applications, that’s

Visual stimulation and intrinsic imaging code

Ian Nauhaus, whom UT Austin recently nabbed, is sharing his code for intrinsic imaging and visual stimulation. The visual stimulation code is based off of Psychophysics Toolbox, which is already in use by many neuroscience labs the world over. The implementation varies by lab, and Ian’s implementation is one that sees heavy use in the

GNOOM for spherical treadmill VR

Mice can learn to navigate virtual reality environments using a spherical treadmill, and this behavior drives place cell and grid cell activity. Christoph Schmidt-Hieber has started uploading his code to Google. GNOOM is a collection of virtual-reality tools for biomedical research. At the moment there’s only the optical mouse readout interface to Blender. But he’d

Visual stimuli for mice

By virtue of their small eyes, mice enjoy a large depth of field. In a classic experiment (buried in the methods section) Balkema and Pinto put +6, 0, and -7 diopter lenses in front of mouse eyes and measured no change in retinal ganglion cell receptive field sizes. Clearly there isn’t much of a need

Software for visual psychophysics

This site has a nice big list of software for visual psychophysics. It’s very extensive and includes free as well as commercial solutions: visual stimuli, analysis, teaching, hardware, and more.

RF spotter

On the topic of apps in science… RFspotter is an iPad app for mapping receptive fields on the fly. It’s intended as a quick way to coarsely map a cell’s RF before moving on to other stages in an experiment. It uses the iPad touchscreen to control the stimulus and can mirror the output via

Destroying the curve

So you’re feeling pretty good about the rodent virtual reality system (Hölscher et al. 2005) you have up and running. You’ve got it all… the spherical treadmill with motion tracking feeding back into a 3D vector graphics program that projects a first person view onto a spherical screen. It’s a complex system to put together,

Online tools of questionable usefulness

While on the Gnotero page (a Python app for accessing refs from Zotero, a Firefox plugin-based citation manager, in case you’re wondering), I noticed that the same group has an Online Gabor Patch Generator. Cool. Thanks, guys. But who uses this? Are there researchers who are savvy enough to put Gabor patches to use, but


I recently returned from my private island in the Maldives. Like most of the inhabited islands, it has no physical links to other islands at all. It is only about 250 meters in diameter, so there isn’t much room for infrastructure. The island has its own desalination plant for water, an incinerator for waste disposal,


PsychoPy is worth checking out if you need any sort of visual stimulus or psychophysics software. It’s a very nice, extensive program by Jonathan Peirce of the University of Nottingham. As you can tell by the name, it uses Python for programming. So it is easy to integrate it into online analysis and any other