scholarly journals Selective attention and complex discrimination learning in the Japanese quail

1969 ◽  
Vol 15 (3) ◽  
pp. 167-168 ◽  
Author(s):  
Frederick G. Fidura
Keyword(s):  
Selective Attention ◽  
Discrimination Learning ◽  
Japanese Quail

Selective attention and pigeons’ multiple necessary cues discrimination learning

2015 ◽  
Vol 112 ◽  
pp. 61-71 ◽  
Author(s):  
Y. Teng ◽  
O.V. Vyazovska ◽  
E.A. Wasserman
Keyword(s):  
Selective Attention ◽  
Discrimination Learning

Successive Reversals Involving Two Cues

1966 ◽  
Vol 18 (2) ◽  
pp. 97-102 ◽  
Author(s):  
N. S. Sutherland
Keyword(s):  
Selective Attention ◽  
Discrimination Learning ◽  
Visual Discrimination ◽  
Process Model ◽  
Discrimination Problem

Rats were trained on a visual discrimination problem with two relevant cues—brightness and orientation. They were then given eight reversals in succession on the same problem. After reversals 7 and 8 they were tested with each cue presented on its own to see how much they had learned about each. Individual animals tended to reverse the cue about which they learned more from reversals 7 to 8, so that animals that had learned reversal 7 mainly in terms of the brightness cue learned reversal 8 mainly in terms of the orientation cue and vice versa. The result provides further confirmation for a two-process model of discrimination learning in which one process is that of selective attention

Discrimination and Generalization of Complex Visual Shape Variations in Pigeons

1972 ◽  
Vol 35 (3) ◽  
pp. 915-927 ◽  
Author(s):  
Douglas P. Ferraro ◽  
Michael G. Grisham
Keyword(s):  
Selective Attention ◽  
Discrimination Learning ◽  
Stimulus Control ◽  
Complex Shape ◽  
Shape Similarity ◽  
Angular Orientation ◽  
Functional Representation ◽  
Key Pecking ◽  
Generalization Gradients ◽  
Visual Shape

Three experiments investigated stimulus control of key pecking in pigeons by varying the distance of vertices movement for a six-point complex visual shape. Ease of discrimination learning was monotonically related to the distance of vertices movement when the directions of vertices movement were held constant. As suggested by selective attention theory, steep generalization gradients were obtained following intradimensional differential training but not following nondifferential training or interdimensional differential training. These results indicate that, unlike the dimension of angular orientation or tilt, distance of vertices movement provides a consistent functional representation of complex shape similarity.

The Quantitative Ultrastructure of the Heart Muscle of Japanese Quail by Hypergravitation, Hypodynamy and Combination

1990 ◽  
Vol 48 (3) ◽  
pp. 188-189
Author(s):  
Anton Bózner ◽  
Mikuláš Gažo ◽  
Jozef Dostál
Keyword(s):  
Japanese Quail ◽  
Heart Muscle ◽  
Relative Size ◽  
Combination Group ◽  
Control Group ◽  
Group V ◽  
Group Iii ◽  
Space Flights ◽  
Group I ◽  
Quantitative Ultrastructure

It is anticipated that Japanese quail /Coturnix coturnix japonica/ will provide animal proteins in long term space flights. Consequently this species of birds is of research interest of international space program INTERCOSMOS. In the year 1987 we reported on an experiment /2/ in which the effect of chronic acceleration of 2 G hypergravitation, the hypodynamy and the simultaneous effect of chronic acceleration and the location in the centre of the turntable of the centrifuge on the protein fractions in skeletal muscles was studied. The ultrastructure of the heart muscle was now in this experiments examined as well.Japanese quail cockerels, aged 48 days were exposed to 2 G hypergravitation /group IV/ in a 6,4 m diameter centrifuge, to hypodynamy /group III/ and their combination /group V/, respectively for 6 days / Fig.1/. The hypodynamy in group III was achieved by suspending the birds in jackets without contact the floor. The group II was located in the centre ofthe turntable of the centrifuge. The control group I. was kept under normal conditions. The quantitative ultrastructure of myocard was evaluated by the methods of Weibel/3/ - this enables to determine the number, relative size and volume of mitochondria volume of single mitochondria, defficiency of mitochondrial cristae and volume of myofibrils.

Auditory Selective Attention in Cerebral-Palsied Individuals

1985 ◽  
Vol 16 (4) ◽  
pp. 260-266 ◽  
Author(s):  
Lee Ann Laraway
Keyword(s):  
Selective Attention ◽  
White Noise ◽  
Normal Subjects ◽  
Auditory Selective Attention ◽  
Normal Individuals ◽  
Significant Difference

The purpose of this study was to determine whether there is a statistically significant difference between the auditory selective attention abilities of normal and cerebral-palsied individuals. Twenty-three cerebral-palsied and 23 normal subjects between the ages of 5 and 21 were asked to repeat a series of 30 items consisting of from 2 to 4 digits in the presence of intermittent white noise. Results of the study indicate that cerebral-palsied individuals perform significantly poorer than normal individuals when the stimulus is accompanied by noise. Noise was not a significant factor in the performance of the normal subjects regardless of age.

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