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Avian pattern and object perception.

Kelly, Debbie Mae.

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Avian pattern and object perception.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Avian pattern and object perception./
作者:	Kelly, Debbie Mae.
面頁冊數:	234 p.
附註:	Advisers: Marcia Spetch; Cynthia Paszkowski.
Contained By:	Dissertation Abstracts International63-06B.
標題:	Biology, Zoology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=NQ68956
ISBN:	0612689565

Avian pattern and object perception.
Kelly, Debbie Mae.

Avian pattern and object perception. - 234 p.

Advisers: Marcia Spetch; Cynthia Paszkowski.

Thesis (Ph.D.)--University of Alberta (Canada), 2001.

Humans and birds recognize objects and scenes readily, so one tends to believe that their perceptual mechanisms must be similar. This thesis shows that there are substantial species differences in the architecture of the perceptual systems, differences that were studied using three main approaches. At the initial level, elemental processing of simple patterns was examined. These experiments revealed that pigeons encode simple patterns in terms of local properties. Humans, on the other hand, did not show local level processing but rather showed global level processing. This type of elemental encoding, used by the pigeons, would not seem to provide the flexibility needed to recognize dynamic objects in a naturalistic environment. Thus, the second approach used to understand avian perception examined how pigeons use complex information from entire scenes. Using this approach, we found that pigeons were not simply encoding the elemental properties of the images, but were rather using contextual information. The complex scenic images presented may have provided the pigeons with several cues (e.g., depth cues or multiple views) which were not available in earlier investigations using more simple stimuli. Therefore, the in the third approach, we examined the influence of motion in pattern and object recognition. Motion, either on the part of the observer or the object, may provide important discriminative cues that are not available when an object is viewed statically. In these investigations we found that pigeons encode both the featural and geometric properties of their environment, and that the geometric properties are encoded as relational metrics. To examine the influence of object-motion, owl predatory behavior was examined. It was shown that owls rely not only on the presence or absence of motion but also on the quality of the motion. Each approach to examining pattern and object perception is necessary to understanding how birds recognize objects within their environment. The experimental evidence provided by each of these approaches provides a new and better understanding of avian visual perception.

ISBN: 0612689565Subjects--Topical Terms:

1018632
Biology, Zoology.

Avian pattern and object perception.
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