Azimuthal invariance to looming stimuli in the Drosophila giant fiber escape circuit.
J Exp Biol
; 226(8)2023 04 15.
Article
en En
| MEDLINE
| ID: mdl-37066993
ABSTRACT
Spatially invariant feature detection is a property of many visual systems that rely on visual information provided by two eyes. However, how information across both eyes is integrated for invariant feature detection is not fully understood. Here, we investigated spatial invariance of looming responses in descending neurons (DNs) of Drosophila melanogaster. We found that multiple looming responsive DNs integrate looming information across both eyes, even though their dendrites are restricted to a single visual hemisphere. One DN, the giant fiber (GF), responds invariantly to looming stimuli across tested azimuthal locations. We confirmed visual information propagates to the GF from the contralateral eye, through an unidentified pathway, and demonstrated that the absence of this pathway alters GF responses to looming stimuli presented to the ipsilateral eye. Our data highlight a role for bilateral visual integration in generating consistent, looming-evoked escape responses that are robust across different stimulus locations and parameters.
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1
Banco de datos:
MEDLINE
Asunto principal:
Drosophila
/
Drosophila melanogaster
Límite:
Animals
Idioma:
En
Revista:
J Exp Biol
Año:
2023
Tipo del documento:
Article
País de afiliación:
Estados Unidos