| |
Records |
Links |
|
Author |
Wolfe, J.M. |
|
| |
Title |
Hidden visual processes |
Type |
Journal Article |
| |
Year |
1983 |
Publication |
Scientific American |
Abbreviated Journal |
Sci Am |
|
| |
Volume |
248 |
Issue |
2 |
Pages |
94-103 |
|
| |
Keywords |
Color Perception/*physiology; Humans; Motion Perception/physiology; Ocular Physiology; Vision; Visual Perception/*physiology |
|
| |
Abstract |
Isoluminant stimulus is an image whose edges are defined only by a change in color, not by change in brightness. The stimulus here is imperfect: the blue parts and the green parts of the image are only as nearly equal in brightness as they can be on the printed page. Moreover, the change in brightness beyond the edge of the page is apparent, and so is the fact that the reader is holding the magazine at reading distance. When such cues are removed under laboratory conditions, subjects faced with an isoluminant stimulus prove unable to bring its edges into focus. This deficiency contributes to making a familiar face hard to recognize. The experiment indicates that the brain process underlying visual accommodation (the focusing of the eyes) cannot “see” color; it is a hidden process distinct from the processes that lead to perception. The image shows Groucho Marx as he appeared in the motion picture Horse Feathers. |
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
English |
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
0036-8733 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition  |
|
Conference |
|
|
| |
Notes |
PMID:6836258 |
Approved |
no |
|
| |
Call Number |
Equine Behaviour @ team @ |
Serial |
4066 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Salzen, E.A.; Cornell, J.M. |
|
| |
Title |
Self-perception and species recognition in birds |
Type |
Journal Article |
| |
Year |
1968 |
Publication |
Behaviour |
Abbreviated Journal |
Behaviour |
|
| |
Volume |
30 |
Issue |
1 |
Pages |
44-65 |
|
| |
Keywords |
Animals; Birds; Color Perception; Discrimination Learning; Generalization, Response; Imprinting (Psychology); *Perception; *Self Concept; Social Isolation; *Species Specificity; Water |
|
| |
Abstract |
|
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
English |
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
0005-7959 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
PMID:5644775 |
Approved |
no |
|
| |
Call Number |
Equine Behaviour @ team @ |
Serial |
4154 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Griffin, B. |
|
| |
Title |
The use of fecal markers to facilitate sample collection in group-housed cats |
Type |
Journal Article |
| |
Year |
2002 |
Publication |
Contemporary Topics in Laboratory Animal Science / American Association for Laboratory Animal Science |
Abbreviated Journal |
Contemp Top Lab Anim Sci |
|
| |
Volume |
41 |
Issue |
2 |
Pages |
51-56 |
|
| |
Keywords |
Animals; Behavior, Animal; Biological Markers/*analysis; Cats/*physiology/psychology; Diet/veterinary; Feces/*chemistry; Food Coloring Agents/analysis; Housing, Animal; Individuality; Plastics/analysis; Specimen Handling/methods/*veterinary |
|
| |
Abstract |
The provision of proper social housing is a priority when designing an experiment using domestic cats as laboratory animals. When animals are group-housed, studies requiring analysis of stool samples from individual subjects pose difficulty in sample collection and identification. In this study, commercially available concentrated food colorings (known as bakers pastes) were used as fecal markers in group-housed cats. Cats readily consumed 0.5 ml of bakers paste food coloring once daily in canned cat food. Colorings served as fecal markers by imparting a distinct color to each cat s feces, allowing identification in the litter box. In addition, colored glitter (1/8 teaspoon in canned food) was fed to cats and found to be a reliable fecal marker. Long-term feeding of colorings and glitter was found to be safe and effective at yielding readily identifiable stools. |
|
| |
Address |
Scott-Ritchey Research Center, College of Veterinary Medicine, Auburn University, Alabama 36841, USA |
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
English |
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
1060-0558 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
PMID:11958604 |
Approved |
no |
|
| |
Call Number |
Equine Behaviour @ team @ |
Serial |
4165 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Pick, D.F.; Lovell, G.; Brown, S.; Dail, D. |
|
| |
Title |
Equine color perception revisited |
Type |
Journal Article |
| |
Year |
1994 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
|
| |
Volume |
42 |
Issue |
1 |
Pages |
61-65 |
|
| |
Keywords |
Equine; Color perception; Dichromat |
|
| |
Abstract |
An attempt to replicate Grzimek (1952; Z. Tierpsychol., 27: 330-338) is reported where a Quarter-Horse mare chose between colored and gray stimuli for food reinforcement. Stimuli varied across a broad range of reflectance values. A double-blind procedure with additional controls for auditory, olfactory, tactile, and position cues was used. The subject could reliably discriminate blue (462 nm) vs. gray, and red (700 nm) vs. gray without regard to reflectance (P<0.001), but could not discriminate green (496 nm) vs. gray. It is suggested that horses are dichromats in a manner similar to swine and cattle. |
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
|
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
|
Approved |
no |
|
| |
Call Number |
Equine Behaviour @ team @ |
Serial |
4368 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Pick, D. Kendra, B.; Steciuch, C. |
|
| |
Title |
The Familiarity Heuristic in the Horse (Equus caballus) |
Type |
Conference Article |
| |
Year |
2015 |
Publication |
Proceedings of the 3. International Equine Science Meeting |
Abbreviated Journal |
Proc. 3. Int. Equine. Sci. Mtg |
|
| |
Volume |
|
Issue |
|
Pages |
|
|
| |
Keywords |
color perception, learning theory, prospect theory |
|
| |
Abstract |
This study replicated an unreported finding observed in a color perception experiment (Pick, Lovell, Brown, & Dail, 1994) where, after using the method of successive approximations to train a blue-gray discrimination, red-gray trials were initiated without further training. Although a gray choice had never been reinforced, the subject chose gray on the first 20 trials (p < .000001). In the study reported here, a horse was trained to approach a red feed bucket and not a green feed bucket. After the subject mastered the discrimination, a blue bucket was substituted for the previously reinforced red bucket. With double-blind controls in place, the subject chose the unreinforced green bucket on 15 out of the first 20 blue-green trials yielding a binomial p = 0.0148 that this outcome could be due to chance alone. These results are contrary to all behavioristic psychological learning theories, but consistent with prospect theory (Kahneman & Tversky, 1979). Prospect theory predicts that given a choice between two previously unreinforced stimuli, one familiar and the other novel, humans will choose the familiar. It is argued that the bias toward the familiar is the basis to a heuristic that has a genetic origin and should exist in other animals on the phylogenetic scale. The results of this study indicate that the heuristic is available at least as far down the scale as the horse. Conceptual replications using shape stimuli and sound stimuli are in progress. |
|
| |
Address |
|
|
| |
Corporate Author |
Pick, D. |
Thesis |
|
|
| |
Publisher |
Xenophon Publishing |
Place of Publication |
Wald |
Editor |
; Krueger, K. |
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
978-3-95625-000-2 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
Id - |
Approved |
no |
|
| |
Call Number |
Equine Behaviour @ team @ |
Serial |
5899 |
|
| Permanent link to this record |
