Results 11 to 20 of about 7,770 (230)
Functional MRI of postnatal visual development in normal rat superior colliculi [PDF]
2009 Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2009 This study employed blood oxygenation level-dependent functional MRI (BOLD-fMRI) to evaluate the visual responses in the superior colliculus of the developing rat brain from the time of eyelid opening to adulthood. Upon flash illumination to the contralateral eye, the regional BOLD response underwent a systematic increase in amplitude with age ...
Kevin C. Chan +4 more
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Effects of damage to superior colliculi and pre-tectum on movement discrimination in rhesus monkeys [PDF]
Experimental Brain Research, 1984 Eight rhesus monkeys (Macaca mulatta) were trained to detect an instantaneous lateral displacement of a small spot of light. The smallest movement for 79% correct performance was then determined. Severing the splenium of the corpus callosum, which has to be done to reveal the superior colliculi, had no effect on the movement threshold.
Alan Cowey +2 more
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The involvement of the superior colliculi in hemispherectomized subjects with blindsight
Journal of Vision, 2010 Purpose: The ability in cortically blind patients to respond to visual stimuli without consciously experiencing has been termed ‘blindsight’. The goal of this study is to investigate the involvement of the superior colliculi (SC) in mediating blindsight in hemispherectomized (HS) subjects. Methods: We used the achromatic properties of collicular cells,
Sandra E. Leh +2 more
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The Journal of Physiology, 1976 1. Irregular light falshes were played on to one eye of dark adapted rabbits for periods of 20‐80 min. The concentration of 5‐hydroxyindol‐3‐ylacetic acid (5‐HIAA) and of 5‐hydroxytryptamine (5‐HT) were estimated in left and right superior colliculi, thalami and hippocampi. 2.
Kenji Fukui, Miriam A. Vogt
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Origin and terminal distribution of the trigeminal projections to the inferior and superior colliculi in the lesser hedgehog tenrec [PDF]
European Journal of Neuroscience, 1998 AbstractThe trigemino‐tectal projections were investigated with anterograde and retrograde tracing techniques in the Madagascan lesser hedgehog tenrec, Echinops telfairi. There were prominent contralateral projections to the inferior colliculus (CoI) and the superior colliculus (CoS), each showing its own characteristic pattern of terminations.
Heinz Künzle
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Deficits in the activation of human oculomotor nuclei in chronic traumatic brain injury [PDF]
Frontiers in Neurology, 2015 Binocular eye movements form a finely-tuned system that requires accurate coordination of the oculomotor dynamics of the brainstem control nuclei when tracking the fine binocular disparities required for 3D vision.
Christopher W Tyler +3 more
doaj +3 more sources
Characterization of experimental cerebral malaria by volumetric MRI A comparative study across the sexes. [PDF]
PLoS ONECerebral malaria (CM), a potentially lethal neurological complication of the infection by Plasmodium falciparum, affects mostly the pediatric population under 5 years old in sub-Saharan Africa.
Alicia Comino Garcia Muñoz +6 more
doaj +2 more sources
[18F]-Fdg Pet Identified Superior Colliculi Hypometabolism in Progressive Supranuclear Palsy
Journal of Alzheimer’s Disease & Parkinsonism, 2016 Hypometabolism in the fronto-mesial cortex and in the anterior cingulate cortex were reported in patients with progressive supranuclear palsy (PSP). Severe neuronal loss, associated with gliosis and neurofibrillary tangles were reported in the superior colliculi of patients with PSP in the initial clinico-neuropathological description of the disease by
Alice Jaillard, G. Petyt, Maxime Morelle
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NeuroImage, 2009 The superior colliculus (SC) is a laminated subcortical structure in the mammalian midbrain, whose superficial layers receive visual information from the retina and the visual cortex. To date, its functional organization and development in the visual system remain largely unknown.
Kevin C. Chan +4 more
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The Ventral Tectal Longitudinal Column: A Midbrain Nucleus for Modulation of Auditory Processing in the Cochlear Nucleus, Superior Olivary Complex, and Inferior Colliculus. [PDF]
J Comp NeurolThe ventral tectal longitudinal column (TLCv) is a midbrain nucleus thought to provide multisensory modulation of acoustic processing via descending projections to the superior olivary complex. We discovered additional projections from the TLCv to the cochlear nucleus and to the inferior colliculus.
Schofield BR +3 more
europepmc +2 more sources