Light-dependent retinal innervation of the rat superior colliculus

2007 ◽  
Vol 290 (3) ◽  
pp. 341-348 ◽  
Author(s):  
J. Roxanne Prichard ◽  
Hilda S. Armacanqui ◽  
Ruth M. Benca ◽  
Mary Behan
Keyword(s):  
Superior Colliculus ◽  
Retinal Innervation

Ultrastructure and retinal innervation of deafferentation-induced enkephalin-immunoreactive elements in the superficial layers of the rat superior colliculus

1991 ◽  
Vol 556 (1) ◽  
pp. 175-179 ◽  
Author(s):  
Jose Javier Miguel-Hidalgo ◽  
Emiko Senba ◽  
Koichi Takatsuji ◽  
Masaya Tohyama
Keyword(s):  
Superior Colliculus ◽  
Retinal Innervation

Ultrastructure of developing visual cortical synapses in the cat superior colliculus

1991 ◽  
Vol 49 ◽  
pp. 156-157
Author(s):  
Caroline A. Miller ◽  
Laura L. Bruce
Keyword(s):  
Superior Colliculus ◽  
Phosphate Buffer ◽  
Receptive Fields ◽  
Visual Cortical Area ◽  
Cortical Synapses ◽  
Visual Cortical ◽  
And Function ◽  
Phosphate Buffered Saline ◽  
The Brain ◽  
Cat Superior Colliculus

The first visual cortical axons arrive in the cat superior colliculus by the time of birth. Adultlike receptive fields develop slowly over several weeks following birth. The developing cortical axons go through a sequence of changes before acquiring their adultlike morphology and function. To determine how these axons interact with neurons in the colliculus, cortico-collicular axons were labeled with biocytin (an anterograde neuronal tracer) and studied with electron microscopy.Deeply anesthetized animals received 200-500 nl injections of biocytin (Sigma; 5% in phosphate buffer) in the lateral suprasylvian visual cortical area. After a 24 hr survival time, the animals were deeply anesthetized and perfused with 0.9% phosphate buffered saline followed by fixation with a solution of 1.25% glutaraldehyde and 1.0% paraformaldehyde in 0.1M phosphate buffer. The brain was sectioned transversely on a vibratome at 50 μm. The tissue was processed immediately to visualize the biocytin.

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