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  • Title: A new learning paradigm elicits fast visual discrimination in pigeons.
    Author: Huber L, Apfalter W, Steurer M, Prossinger H.
    Journal: J Exp Psychol Anim Behav Process; 2005 Apr; 31(2):237-46. PubMed ID: 15839779.
    Abstract:
    The authors describe a novel multistimulus, multiple-matching learning paradigm for pigeons, which they believe not only simulates pigeons' natural foraging behavior but also more realistically shows their visual discrimination ability. A touch screen thin film transistor panel shows a stimulus configuration consisting of a 2-dimensional array of bitmap images that changes from trial to trial. The pigeon's task during each trial is to peck at images that are defined as positive by the experimenter. An experiment exploring the ability of pigeons to discriminate between achromatic male and female human faces demonstrated the effectiveness of the procedure. In contrast to 12 pigeons that show little improvement over 60 hr of go/no-go discrimination training, 14 multiple-matching pigeons mastered the problem within a few hours.
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