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Titolo:
Two-dimensional pattern discrimination by the honeybee
Autore:
Horridge, A;
Indirizzi:
Australian Natl Univ, Res Sch Biol Sci, Canberra, ACT 2601, Australia Australian Natl Univ Canberra ACT Australia 2601 rra, ACT 2601, Australia
Titolo Testata:
PHYSIOLOGICAL ENTOMOLOGY
fascicolo: 3, volume: 24, anno: 1999,
pagine: 197 - 212
SICI:
0307-6962(199909)24:3<197:TPDBTH>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
EQUAL ORTHOGONAL BARS; FLOWER-LIKE PATTERNS; APIS-MELLIFERA; CHROMATIC PROPERTIES; VISION; BEES; ORIENTATION; CELLS; RECOGNITION; PARAMETERS;
Keywords:
Apis mellifera; honeybee; memory; pattern; vision;
Tipo documento:
Review
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
65
Recensione:
Indirizzi per estratti:
Indirizzo: Horridge, A Australian Natl Univ, Res Sch Biol Sci, POB 475, Canberra, ACT2601, Australia Australian Natl Univ POB 475 Canberra ACT Australia 2601 ralia
Citazione:
A. Horridge, "Two-dimensional pattern discrimination by the honeybee", PHYSL ENTOM, 24(3), 1999, pp. 197-212

Abstract

For a reward of sugar, bees will learn to prefer a pattern rather than an alternative similar one. This visual discrimination allows us to measure resolution, and to search for the cues that the bees remember and later use to recognize the rewarded pattern. Two systems in parallel, analogous to lowpass and high pass filters, are distinguished. The first system discriminates the location and size of at least one area of contrast on each side of the target, with inputs from blue and green receptors, but the ability to discriminate the location of colour depends upon fixation. The bees rememberless than a low resolution copy of the image, even when they fixate on a vertical pattern. The second system amplifies the contrast at edges in the pattern, ignoringthe direction of contrast, and controls fixation upon the target. Edges are discriminated according to their orientation and radial or tangential arrangement. An axis of bilateral symmetry is detected. However, the relative locations of cues within the image are lost, apparently because the relevant neurones have very large fields. Only the cues, not the whole patterns, are preserved in memory. This system is colour blind because its input is restricted to the receptors with peak sensitivity in the green. The two systems together discriminate many simple patterns, but not all, because the filters are limited in variety.

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Documento generato il 04/07/20 alle ore 23:19:19