Thursday, May 15, 2014
The new HVS Image 2014 also contains the most cost effective Zebrafish larvae activity monitoring system ever. Using a standard camera the system is IR sensitive and by using ANSI and SBS compliant IR-translucent multi-well plates and setting the software to either 96 fields or 48 fields simultaneously you can have an inexpensive, efficient system for high throughput tracking of zebrafish larvae (Danio rerio). Details at HVSImage
Wednesday, May 14, 2014
The Open Field modules of HVS Image 2014.4  (Beryllium build) now offer an additional open file format, BOND (Behavioral OpeN Data files) for storing digital data, which can be used and implemented by anyone. These can can be implemented by both proprietary and free and open source software, using the typical software licenses used by each. In contrast to closed formats, open formats (also called free file formats) are not encumbered by any copyrights, patents, trademarks or other restrictions (for example, if they are in the public domain) so that anyone may use it at no monetary cost for any desired purpose. The basic BOND format is based on the JSON standard outlined here http://www.ecma-international.org/publications/files/ECMA-ST/ECMA-404.pdf
Monday, May 12, 2014
It's always been useful to get more data from a single open-field video set up by tracking the animals in open filed 2 x 2 - and now HVS Image 2014 can track 9 or more animals by setting up the cages 3x3 (or even 4x4 or 5x5 if you like) Find out more at hvsimage.com
Saturday, November 2, 2013
HVS Image are presenting an Open Field Workshop at SFN 2013. Anyone can attend - just visit booth 335. See their announcement below:
Monday, July 1, 2013
Visiting labs I keep on coming across 25 year old HVS Image VP112s still working perfectly and typically now outlasting their original owners and PIs, although now it is nearly impossible to find a personal computer that will link to the old RS232 interface far more run the old MS-DOS 3.1 software.
Thinking about the old VP112s reminds me of Walter Isaacson's comments on Steve Jobs's design philosophy. Under Jobs, Apple became famous for a level of craft that seemed almost gratuitous: For example, on the "Sunflower" Macintosh of a few years ago, there was an exquisitely fine, laser-etched Apple logo. As an owner, you might see that logo only once a year, when moving the computer. But it mattered, because that single time made an impression.
If you remember the old VP110s, VP112s and VP118s you'll remember that HVS Image followed the seminal phrase coined by architect Louis Sullivan's - that "form ever follows function. This is the law." So there are no engraved Sunflowers but if you ever look inside and HVS Image VP - as I looked inside some of the earliest HVS Image trackers in the 1970s and architecture which was not just clean and orderly but was organised to perfection - every wire every, circuit board, every component in its place. PIs may not have see the deep beauty of the VP112 (although they appreciated the elegant simplicity of the interface), but many a technician did and any that where around at that time would not be surprised to see them working now without a glitch.
Just like Steve Jobs this level of craft was one of the first design lessons that I ever got, and like Jobs this was learned at the hands of my father.
My childhood home was lined with robot components (early machine vision system, robot arms as well as autonomous vehicles) and physics texts rather than fences and cabinets, but still - the lesson was learned and the philosophy continues in HVS Products.
Friday, June 21, 2013
Characterization and Quantification of Spatial Learning Strategies.These really fall into the category of sharing ones own notebook with the online community and I'm afraid without scaffolding - but I still welcome informed feedback. We've been looking at an additional "derivative" class of analysis parameters that might be shared over multiple assays. These include turning latency, decision frequency and decisional entropy. There is a considerable similarity between some of my previous predictive behavior work and OFT/MWM etc in that the concept of choice modeling as a temporal Markov chain occurs in both. Looking at the way things are modelled, measuring the first differential of the data refocuses the assay in the subjects decision making process and search strategies and moves the analysis to an animal centred approach from what is otherwise a meta analytical approach.
Monday, June 17, 2013
Here are the new screenshots of the HVS Image Open Field Test Analysis module in HVS Image 2013. Its set to a 5x5 grid but actually grid sizes can be anything from 2x2 to 255x255. As always you can define HVS Custom files but now you you choose the special areas in the Open Field Test Analysis by pointing and clicking on them. Multiple files are selected by clicking and multi-selecting the source data files.