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Titolo:
Hippocampus and homing in pigeons: left and right hemispheric differences in navigational map learning
Autore:
Gagliardo, A; Ioale, P; Odetti, F; Bingman, VP; Siegel, JJ; Vallortigara, G;
Indirizzi:
Univ Pisa, Dipartimento Etol Ecol & Evoluz, I-56126 Pisa, Italy Univ PisaPisa Italy I-56126 nto Etol Ecol & Evoluz, I-56126 Pisa, Italy Bowling Green State Univ, Dept Psychol, Bowling Green, OH 43403 USA Bowling Green State Univ Bowling Green OH USA 43403 g Green, OH 43403 USA Bowling Green State Univ, JP Scott Ctr Neurosci Mind & Behav, Bowling Green, OH 43403 USA Bowling Green State Univ Bowling Green OH USA 43403 g Green, OH 43403 USA Univ Trieste, Dipartimento Psicol, I-34124 Trieste, Italy Univ Trieste Trieste Italy I-34124 imento Psicol, I-34124 Trieste, Italy Univ Trieste, Ctr Interdipartimentale Neurosci BRAIN, I-34124 Trieste, Italy Univ Trieste Trieste Italy I-34124 eurosci BRAIN, I-34124 Trieste, Italy
Titolo Testata:
EUROPEAN JOURNAL OF NEUROSCIENCE
fascicolo: 8, volume: 13, anno: 2001,
pagine: 1617 - 1624
SICI:
0953-816X(200104)13:8<1617:HAHIPL>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPATIAL MEMORY DEFICITS; FOOD-STORING BIRDS; LESIONS; BRAIN; ORIENTATION; ASYMMETRIES; BEHAVIOR; SYSTEM;
Keywords:
brain asymmetry; hippocampus; homing; lateralization; navigational map; pigeon; unilateral lesion;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
44
Recensione:
Indirizzi per estratti:
Indirizzo: Gagliardo, A Univ Pisa, Dipartimento Etol Ecol & Evoluz, Via Volta 6, I-56126 Pisa, Italy Univ Pisa Via Volta 6 Pisa Italy I-56126 I-56126 Pisa, Italy
Citazione:
A. Gagliardo et al., "Hippocampus and homing in pigeons: left and right hemispheric differences in navigational map learning", EUR J NEURO, 13(8), 2001, pp. 1617-1624

Abstract

One-month-old, inexperienced homing pigeons, prior to any opportunity to learn a navigational map, were subjected to either right or left unilateral ablation of the hippocampal formation (HF). These pigeons were then held together with a group of age-matched control birds in an outdoor aviary, where they were kept for about 3 months with the opportunity to learn a navigational map. When subsequently tested for navigational map learning at about 4 months of age posthatching, control and right HF-ablated pigeons were equally good at orienting homeward from distant, unfamiliar locations, indicating successful navigational map learning. By contrast, left HF-ablated pigeons were impaired in orienting homeward, indicating a failure to learn a navigational map. Interestingly, both right and left HF-ablated pigeons displayed impaired homing performance relative to controls. These results suggest that different aspects of homing pigeon navigation may be lateralized to different hemispheres, and in particular, the HF of the different hemispheres. The left HF appears critical for navigational map learning, i.e. determining an approximate direction home from distant, unfamiliar locations. Theright HF, and possibly the left HF as well, appear to play an important role in local navigation near the loft, which is likely based on familiar landmarks.

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Documento generato il 19/01/20 alle ore 12:33:04