YLS-17B avoidance shuttle tester I. Overview of internal psychological process of human and animal activity can not be directly observed, scientists can only be based on observable brain stimulation to speculate process occurs on the brain memory processes After studying only learn or perform a task by a human or animal, a certain time interval, to measure their operational performance or response time to measure the encoded form of these processes, storage capacity, retention time, and they depend on the conditions, and so on. Learning and memory test method is based on the conditioned reflex, a variety of methods are thus derived from the shuttle avoidance test is one of a more commonly used method. The advantage of this method is simple, can observe the effects of drugs on memory processes can also observe the effect on academic achievement, high sensitivity, especially suitable for the drug screening. YLS-17B avoidance tester is a shuttle, do passive avoidance test, anxiety shuttle experiment or test a multi-purpose economic and practical instruments. Optional equipment and mice two types of test case, bigger, mouse passive avoidance test, the shuttle experiments, test anxiety. The instrument has a liquid crystal display, easy to set, count accurate, visually, compact structure, easy maintenance, use of safety features, for research and educational use, a variety of Zengzhi brain, improve memory, anti-aging medicine and health products screening, developed an essential tool. Second, technical indicators to set parameters required for passive avoidance test: Determination of the number of channels: 1-2 current mode: avoidance avoidance measurement time: 600 minutes adjusted in steps of 1 minute clock Setting item: year, month, day , hours, minutes, seconds, power grid voltage adjustment range: 30V ~ 120V (peak square wave), adjust the step size 1V; electric gate limit adjustment range: 0.06mA ~ 4.00mA, adjust the step size 0.02 mA shuttle set the parameters required for the experiment : Determination of the number of channels: 1-2 current mode: Shuttle Shuttle warning signs: lighting, sound, sound + light warning signal delay: 2-60 seconds shuttle shock delay: 2-60 seconds Shuttle Test Period: 10-600 seconds shuttle Views: 4-255 times the shuttle set the test time: up to 42.5 hours (period × number of times) the shortest 40 seconds (period × frequency) clock Setting item: year, month, day, hour, minute and second electrical gate voltage adjustment range : 30V ~ 120V (peak square wave), adjust the step size 1V; electric gate limit adjustment range: 0.06mA ~ 4.00mA, adjust the step size 0.02 mA short circuit alarm function own mini-printer, the data printing function with a computer interface, You can import data into the computer Host size: 320 × 320 × 140mm Weight: avoidance shuttle box size (four rooms, each room 190 × 190 × 120mm) 4.25kg mouse weight: 10kg rat passive avoidance shuttle box size (B room, 300 × 300 × per room 200mm) Weight: 15kg avoidance shuttle box is split from top to bottom for easy cleaning and maintenance input voltage: AC, 210V ~ 230V 50Hz Power consumption: 30W ZH-500x type passive avoidance test video analysis system using a small mouse or rat has a habit tend to avoid bright dark design means half darkroom, half bright room, connected to the middle of a small hole. Bottom darkroom copper grid covered with energized. Animals into the darkroom that is subjected to electric shocks. The experiment is simple, the more the reaction tank, while the more trained animals. In the incubation period, the number of errors as an indicator, the difference is relatively small animal. Memory processes, especially for memory retrieval have a higher sensitivity. This system is a way of tracking via camera video analysis system. The system imaging systems, computer stimulator three major components as the hardware basis, the experiment does not need to make a special mark in experimental animals. Software identification algorithm uses a trajectory prediction, local and global combination of search technology, which could be tracked and recorded in experimental animals (mice and rats) position, with an open system scalability, the results can be imported to Excel, and histogram Figure \ Curve \ trajectory processing, user-friendly in SPSS, SAS and other biological analysis of statistical software for further analysis and processing. Second, the software features of multi-function, in addition to passive avoidance test, but were anxious to learn the system very easy to do helplessness model using video camera tracking technology, the automation of the experimental process, avoiding the subjective errors introduced by manual counting and experiments animal interference leading core algorithm, effectively guarantee the accuracy of the identification of noise immunity and user-settable independently of one another experimental data archive folder, easy to test data management can be time record video images in a variety of display indicators provide track map, locus coordinate points and targets results export capabilities. Video file format support AVI compression format, the compression ratio is high, can effectively reduce the storage space, and is conducive to long experimental observation. For research and computer-aided instruction (CAI), the original video images can be recorded, and provide complete experimental database functions, as a true record of research and future teaching demonstration material. Hardware Features Hardware Specifications Hardware parameter analysis system uses an embedded microcontroller as the main control center, experimental constant current to stimulate activity box external dimensions: 700 × 260 × 430mm light box Activity voice delay, voltage and current values ??using the software directly set . White box and black box inside, respectively size: 250 × 185 × 300mm on camera obscura activity time for each electrode has an adjustable peak square wave signal input voltage AC220V shuttle frequency cyclic shift of the electrodes are used pulsating stimulation, the animals withstand the current a constant value, compared with the traditional fixed electrode stimulation, avoiding the animal to stand on the same electrodes can stimulate the shortcomings electrical grid limit adjustment range: 0.04 ~ 3.5mA, adjust the step size 0.02mA, current error is less than 0.04mA can be arbitrarily set as desired. Stimulating sound delay 0-255 seconds. Activity light box camera obscura activities away from the present system all signals are transmitted using the USB interface power grid voltage adjustment range: 30 ~ 120V (peak square wave), adjust the step size 1V, the peak voltage error is less than 5% of the incubation period of the stimulation system suitable for different the size of the animal square wave electric gate on each stimulus frequency 96Hz, the error of 1% error count imaging system parameters: Camera brand SONY Box Camera color black and white or color resolution 540 lines / 600 lines Minimum illumination <0.005Lux video capture card USB2 0.01 External power supply 12V 2mA