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Biomedical subjects

T Zablocka

Publications and source records attributed to T Zablocka.

5 recordsLinked to original sources
PubMed1976

Visual cortex role in object discrimination in cats deprived of pattern vision from birth.

A simultaneous object discrimination task for food reward was elaborated in normal cats and in cats deprived of pattern vision from birth. In the latter the learning was more difficult and retraining was necessary after a preoperative retention period. In both groups the cortical projection of central vision was removed in areas 17, 18 and 19. In deprived cats the deficit following the cortical lesion was less than in normal animals. It is concluded that deprived cats used visual cortex less in learning and thus they learned more slowly but were less deficient postoperatively.

Animals↗
PubMed1975

Visual discrimination learning in cats with different early visual experiences.

Simultaneous object discrimination learning in an alimentary situation was strongly impaired in cats deprived from birth of patterned visual experience. The same impairment was observed in cats with experience limited to those objects that were used later in the discrimination task. Some impairment was also present in cats which were reared with opened eyes in the laboratory as compared with normal cats, that spent the early period of life outside of the laboratory. It is concluded that the deprived cats were impaired mainly because of the lack of opportunity during early development to use visual cues in alimentary tasks.

Animals↗
PubMed1972

Photopositive responses of Musca domestica and Lucilia sp. to monochromatic lights.

The specimens Diptera: Musca dornestica and Ludlia sp. adapted to dark were offered two monochromatic lights of different wavelengths. Musca dornestica always preferred the light of a shorter wave out of two monochromatic equiquantum lights. Six color regions presumably qualitatively different were distinguished for this fly: violet-blue, blue, green, yellow-green, orange and red. Lucilia sp. exhibited no preference to certain ranges lying on both sides of the region maximally saturated. Nevertheless this fly well distinguished three colors ranges: violet-blue, green-yellow and orange-red.

Animals↗
PubMed1972

The relation between the intensity of light and the preference to different wavelengths in Musca domestica and Lucilia sp.

The phototactic choice of some pairs of colored lights by Musca domestica and Lucilia sp. after a rise in intensity of the non-preferred light in spontaneous responses was studied. In the range of spectrum where no preference in spontaneous responses is noted, the brighter light was chosen after its intensity was increased. It is difficult or even impossible to change the preferences of insects to these lights which are well discriminated in spontaneous reactions after increasing the intensity of the less attractive light.

Animals↗