Projections of the nucleus of the basal optic root in pigeons (Columba livia) revealed with biotinylated dextran amine

Wylie, Douglas R.; Linkenhoker, Brie; Lau, K.L.

doi:10.1002/(sici)1096-9861(19970811)384:4<517::aid-cne3>3.0.co;2-5

Cited by 70 publications

(101 citation statements)

References 67 publications

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“…The dorsal thalamic nucleus receives vestibular [19] and optic flow cues [21,22] that are used for path integration and flight stabilization. Therefore, the activation of this region during displacement from the home loft, as well as the homeward flight, is not surprising ( figure 3).…”

Section: Resultsmentioning

confidence: 99%

Odours stimulate neuronal activity in the dorsolateral area of the hippocampal formation during path integration

et al. 2014

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The dorsolateral area of the hippocampal formation of birds is commonly assumed to play a central role in processing information needed for geographical positioning and homing. Previous work has interpreted odourinduced activity in this region as evidence for an 'olfactory map'. Here, we show, using c-Fos expression as a marker, that neuronal activation in the dorsolateral area of the hippocampal formation of pigeons is primarily a response to odour novelty, not to the spatial distribution of odour sources that would be necessary for an olfactory map. Pigeons exposed to odours had significantly more neurons activated in this area of the brain than pigeons exposed to filtered air with odours removed. This increased activity was observed only in response to unfamiliar odours. No change in activity was observed when pigeons were exposed to home odours. These findings are consistent with non-home odours activating non-olfactory components of the pigeon's navigation system. The pattern of neuronal activation in the triangular and dorsomedial areas of the hippocampal formation was, by contrast, consistent with the possibility that odours play a role in providing spatial information.

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Section: Resultsmentioning

confidence: 99%

Odours stimulate neuronal activity in the dorsolateral area of the hippocampal formation during path integration

et al. 2014

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“…Regarding a possible direct connection from the AOS to the cerebellar cortex, this has been described in several nonmammals (fish: Finger and Karten, 1978;turtle: Reiner and Karten, 1978;Weber et al, 2003;pigeon: Brauth and Karten, 1977;Wylie and Linkenhoker, 1996;Wylie et al 1997; but see Montgomery et al, 1981, frog), but its presence in mammals is controversial. Thus, whereas a direct AOS-cerebellar connection was described in chinchilla (Winfield et al, 1978) and tree shrew (Haines and Sowa, 1985), none was found in rat, rabbit, cat and marmoset monkey (Kawasaki and Sato, 1980;Feran and Grasse, 1982;Giolli et al, 1984Giolli et al, , 1985aGiolli et al, , 1988bBlanks et al, 1995).…”

Section: Precerebellar Projections Of the Aosmentioning

confidence: 99%

The accessory optic system: basic organization with an update on connectivity, neurochemistry, and function

Giolli

Blanks

Lui

2006

Progress in Brain Research

143

123

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The accessory optic system (AOS) is formed by a series of terminal nuclei receiving direct visual information from the retina via one or more accessory optic tracts. In addition to the retinal input, derived from ganglion cells that characteristically have large receptive fields, are direction-selective, and have a preference for slow moving stimuli, there are now well-characterized afferent connections with a key pretectal nucleus (nucleus of the optic tract) and the ventral lateral geniculate nucleus. The efferent connections of the AOS are robust, targeting brainstem and other structures in support of visual-oculomotor events such as optokinetic nystagmus and visual-vestibular interaction. This chapter reviews the newer experimental findings while including older data concerning the structural and functional organization of the AOS. We then consider the ontogeny and phylogeny of the AOS and include a discussion of similarities and differences in the anatomical organization of the AOS in nonmammalian and mammalian species. This is followed by sections dealing with retinal and cerebral cortical afferents to the AOS nuclei, interneuronal connections of AOS neurons, and the efferents of the AOS nuclei. We conclude with a section on Functional Considerations dealing with the issues of the response properties of AOS neurons, lesion and metabolic studies, and the AOS and spatial cognition. The accessory optic system (AOS) is formed by a series of terminal nuclei receiving direct visual information from the retina via one or more accessory optic tracts. In addition to the retinal input, derived from ganglion cells that characteristically have large receptive fields, are direction-selective and have a preference for slow moving stimuli, there are now well characterized afferent connections with a key pretectal nucleus (nucleus of the optic tract) and the ventral lateral geniculate nucleus. The efferent connections of the AOS are robust, targeting brainstem and other structures in support of visual-oculomotor events such as optokinetic nystagmus and visual-vestibular interaction. The present chapter reviews the newer experimental findings while including older data concerning the structural and functional organization of the AOS. We then consider the ontogeny and phylogeny of the AOS and include a discussion of similarities and differences in the anatomical organization of the AOS in nonmammalian and mammalian species. This is followed by sections dealing with retinal and cerebral cortical afferents to the AOS nuclei, interneuronal connections of AOS neurons, and the efferents of the AOS nuclei. We conclude with a section on Functional Considerations dealing with the issues of the response properties of AOS neurons, lesion and metabolic studies, and the AOS and spatial cognition.

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“…12,19,20 Nuclei of the accessory optic system project to areas of the inferior olive (IO) that provide climbing fiber input to the contralateral vestibulocerebellum (VbC). 1,[6][7][8]20,33 In pigeons, the VbC consists of folium X (nodulus), the ventral lamella of folium IXc,d (ventral uvula) and the auricle (flocculus), which is the lateral extension of these folia. 18 Previous electrophysiological studies of the pigeon VbC have shown that complex-spike (CS) activity of Purkinje cells (which reflects climbing fiber activity) responds best to specific patterns of optic flow resulting from either self-translation or self-rotation.…”

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confidence: 99%

Topographical organization of inferior olive cells projecting to translation and rotation zones in the vestibulocerebellum of pigeons

et al. 1998

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Abstract--Previous electrophysiological studies in pigeons have shown that the vestibulocerebellum can be divided into two parasagittal zones based on responses to optic flow stimuli. The medial zone responds best to optic flow resulting from self-translation, whereas the lateral zone responds best to optic flow resulting from self-rotation. This information arrives from the retina via a projection from the accessory optic system to the medial column of the inferior olive. In this study we investigated inferior olive projections to translational and rotational zones of the vestibulocerebellum using the retrograde tracer cholera toxin subunit B. Extracellular recordings of Purkinje cell activity (complex spikes) in response to large-field visual stimuli were used to identify the injection sites. We found a distinct segregation of inferior olive cells projecting to translational and rotational zones of the vestibulocerebellum. Translation zone injections resulted in retrogradely labeled cells in the ventrolateral area of the medial column, whereas rotation zone injections resulted in retrogradely labeled cells in the dorsomedial region of the medial column.Motion of any object through space, including self-motion of organisms, can be described with reference to translation and rotation in three-dimensional space. Our results show that, in pigeons, the brainstem visual systems responsible for detecting optic flow are segregated into channels responsible for the analysis of translational and rotational optic flow in the inferior olive, which is only two synapses from the retina. 1998 IBRO. Published by Elsevier Science Ltd.

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Projections of the nucleus of the basal optic root in pigeons (Columba livia) revealed with biotinylated dextran amine

Cited by 70 publications

References 67 publications

Odours stimulate neuronal activity in the dorsolateral area of the hippocampal formation during path integration

Odours stimulate neuronal activity in the dorsolateral area of the hippocampal formation during path integration

The accessory optic system: basic organization with an update on connectivity, neurochemistry, and function

Topographical organization of inferior olive cells projecting to translation and rotation zones in the vestibulocerebellum of pigeons

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