Optokinetic nystagmus in the pigeon (Columba livia) III. Role of the nucleus ectomamillaris (nEM): Interactions in the accessory optic system (AOS)

1983 ◽  
Vol 50-50 (2-3) ◽  
Author(s):  
H. Gioanni ◽  
J. Villalobos ◽  
J. Rey ◽  
A. Dalbera
Keyword(s):  
Optokinetic Nystagmus ◽  
Columba Livia ◽  
Optic System ◽  
Accessory Optic System

Optokinetic Nystagmus and the Accessory Optic System of Pigeon and Turtle

1979 ◽  
Vol 16 (3) ◽  
pp. 192-202 ◽  
Author(s):  
Katherine V. Fite ◽  
Anton Reiner ◽  
Stephen P. Hunt
Keyword(s):  
Optokinetic Nystagmus ◽  
Optic System ◽  
Accessory Optic System

Thalamic origin of neuropeptide Y innervation of the accessory optic nucleus of the pigeon (Columba livia)

1990 ◽  
Vol 5 (3) ◽  
pp. 249-259 ◽  
Author(s):  
Dânia E. Hamassaki ◽  
Luiz R. G. Britto
Keyword(s):  
Neuropeptide Y ◽  
Lateral Geniculate Nucleus ◽  
Functional Organization ◽  
Columba Livia ◽  
Dorsal Lateral Geniculate Nucleus ◽  
Optic System ◽  
Accessory Optic System ◽  
Double Labeling ◽  
Lateral Geniculate ◽  
Electrolytic Lesions

AbstractImmunohistochemical and tracing techniques were used in combination to reveal the source of a neuropeptide Y-like immunoreactive (NPY-LI) plexus in the nucleus of the basal optic root (nBOR) of the pigeon accessory optic system. Injections of rhodamine-labeled latex microspheres into nBOR produced retrograde labeling of a population of neurons interposed between the principal optic nucleus of the dorsolateral thalamus (equivalent to the mammalian dorsal lateral geniculate nucleus) and the ventral lateral geniculate nucleus. The retrogradely labeled neurons were distributed mainly in the immediate vicinity of the lateral, dorsal, and ventral aspects of the nucleus rotundus. Immunohistochemical methods revealed many NPY-containing somata within the same intergeniculate thalamic area. Double-labeling immunohistochemical and retrograde tracing experiments evidenced that many NPY-LI neurons in the intergeniculate area contained rhodamine microspheres that had been previously injected into the ipsilateral nBOR. The projection of that general thalamic area to the nBOR was then confirmed by means of anterograde transport of Phaseolus vulgaris leucoagglutinin. In these experiments, the intergeniculate region was demonstrated to project to all divisions of the nBOR and to every other retino-recipient structure, including the suprachiasmatic nucleus. Finally, electrolytic lesions of the intergeniculate area produced a dramatic reduction in the number of NPY-LI axons and terminals within the ipsilateral nBOR and also within other retino-recipient structures. These data indicate the existence of a thalamic NPY-LI projection to the pigeon nBOR of the accessory optic system. This chemically specific projection originates from the intergeniculate area, which was shown in this study to project to all other retino-recipient structures. Thus, NPY may have a role in the functional organization of the accessory optic system and also of the avian visual system as a whole.

The interstitial nucleus of the superior fasciculus, posterior bundle (INSFp) in the guinea pig: Another nucleus of the accessory optic system processing the vertical retinal slip signal

1989 ◽  
Vol 2 (4) ◽  
pp. 377-382 ◽  
Author(s):  
C. Benassi ◽  
G. P. Biral ◽  
F. Lui ◽  
C. A. Porro ◽  
R. Corazza
Keyword(s):  
Guinea Pig ◽  
Optokinetic Nystagmus ◽  
Vertical Direction ◽  
Luminous Flux ◽  
Visual Signals ◽  
Optic System ◽  
Accessory Optic System ◽  
Retinal Slip ◽  
Visual Patterns ◽  
Medial Terminal Nucleus

AbstractAs in rabbit, gerbil, and rat, the guinea pig interstitial nucleus of the superior fasciculus, posterior bundle (INSFp) is a sparse assemblage of neurons scattered among the fibers forming the fasciculus bearing this name. Most of the INSFp neurons are small and are ovoid in shape. Interspersed among these, are a few larger, elongated neurons whose density becomes greater and whose shape becomes fusiform in correspondence to the zone of transition from the superior fasciculus to the ventral part of the medial terminal nucleus (MTN). Like the MTN, the INSFp is activated by retinal-slip signals evoked by whole-field visual patterns moving in the vertical direction, as shown by the increase of 14C-2-deoxyglucose (2DG) uptake into this nucleus. At the same level of luminous flux, neither pattern moving in the horizontal direction nor the same pattern held stationary can elicit increases in the INSFp 2DG assumption. The specificity of the observed increases in metabolic rates in INSFp following vertical whole-field motion suggests that this assemblage of neurons relays visual signals used in the control of vertical optokinetic nystagmus.

Corrigenda for Extrageniculostriate vision in the monkey: V. Role of accessory optic system.

1973 ◽  
Vol 36 (6) ◽  
pp. 1159-r-1159-r
Author(s):  
Pedro Pasik ◽  
Tauba Pasik
Keyword(s):  
Optic System ◽  
Accessory Optic System ◽  
Hand Column ◽  
Right Hand

Page 455: Pedro Pasik and Tauba Pasik, “Extrageniculostriate vision in the monkey. V. Role of accessory optic system.” The sentence beginning on the eighth line from the bottom of the page, right-hand column, should read: These fibers have been described in the monkey as a slender bundle of only 11 μm in diameter (1). Page 457: Reference 17 should be deleted.

Sign in / Sign up

Export Citation Format

Share Document