A horse's eye view: size and shape discrimination compared with other mammals
نویسندگان
چکیده
منابع مشابه
A horse's eye view: size and shape discrimination compared with other mammals.
Mammals have adapted to a variety of natural environments from underwater to aerial and these different adaptations have affected their specific perceptive and cognitive abilities. This study used a computer-controlled touchscreen system to examine the visual discrimination abilities of horses, particularly regarding size and shape, and compared the results with those from chimpanzee, human and...
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Observers presented with pairs of figures differing in area (SIZE) or aspect ratio (SHAPE) spontaneously make use of both height and width differences. whether or not they are forced to do so by between-interval jittering or even instructed to do so. SHAPE discrimination is considerably better than SIZE discrimination. The superiority of SHAPE discrimination is probably due to partial correlati...
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In three picture-picture matching experiments, the effects of a view change on our ability to detect a shape change (Experiments 1 and 2) were contrasted with the effects of a shape change on our ability to detect a view change (Experiment 3). In each experiment, both view changes and shape changes influenced performance. However, shape changes had more influence than did view changes in the sh...
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HE colors of horses have long been a subject of interest to owners and T breeders of horses as well as to scientists and much information about them is found in the stud-book records of particular breeds. Attempts to use this information in framing explanations of the observed results of matings within or between different color varieties have been made repeatedly since the rise of genetics at ...
متن کاملEye shape and the nocturnal bottleneck of mammals.
Most vertebrate groups exhibit eye shapes that vary predictably with activity pattern. Nocturnal vertebrates typically have large corneas relative to eye size as an adaptation for increased visual sensitivity. Conversely, diurnal vertebrates generally demonstrate smaller corneas relative to eye size as an adaptation for increased visual acuity. By contrast, several studies have concluded that m...
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ژورنال
عنوان ژورنال: Biology Letters
سال: 2015
ISSN: 1744-9561,1744-957X
DOI: 10.1098/rsbl.2015.0701