Dogs (Canis familiaris) Gaze at Our Hands: A Preliminary Eye-Tracker Experiment on Selective Attention in Dogs

Dogs have developed a social competence tuned to communicate with human and acquire social information from body signals as well as facial expressions. However, less is known regarding how dogs shift attention toward human body signals, specifically hand signs. Comparison among visual attentional patterns of dogs toward whole body of human being, conspecifics, and other species will reveal dogs’ basic social competences and those specialized to inter-species communication with humans. The present study investigated dogs’ gazing behaviors in three conditions: viewing humans with or without hand signs, viewing conspecifics, and viewing cats. Digital color photographs were presented on a liquid crystal display monitor, and subject dogs viewed the images while their eyes were tracked. Results revealed that subjects gazed at human limbs more than limbs within conspecific and cat images, where attention was predominately focused on the head and body. Furthermore, gaze toward hands was greater in the human hand sign photos relative to photos where human hand signs were not present. These results indicate that dogs have an attentional style specialized for human non-verbal communication, with an emphasis placed on human hand gestures.

Design of GPRS Based on MCU STC12C5A60S2

The MCU has the smaller volume, low cost, face control, antijamming ability strong and so on merits, GPRS is based on the GSM development foundation in data traffic. one kind of GPRS system Has been designed by using MCU STC12C5A60S2, it including correspondence transformation connection, SIM300 module, MCU, display circuit, keyboard electric circuit, RS232 exterior serial communication connection and so on. The related hardware welding on the PCB, the software programming after-burning writes in the MCU, inserts the liquid crystal display monitor and the SIM card, joins the receiver and the microphone, connects the good GPRS antenna. On the electricity, the establishment correspondence transformation connection, may realize the close-down, the dial and the answering telephone, transmits and receives the SMS, to receive and dispatch E-mail, carries on the Internet to glance over and so on, indicated that has achieved the design requirements.