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Keywords: Optic tectum
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Journal Articles
Brain Behav Evol (2017) 90 (3): 211–223.
Published Online: 23 November 2017
... Magnetic resonance imaging Cerebellum Rhombencephalon Tegmentum Optic tectum Mesencephalon Diencephalon Telencephalon A relatively large and complex brain is one of the major characteristics of vertebrate animals, and this characteristic is linked to the diverse sensory, behavioural, social...
Journal Articles
Journal Articles
Brain Behav Evol (2013) 82 (3): 185–198.
Published Online: 14 November 2013
... the volume of a major visual region, the optic tectum (OT), and found that this same lineage also has an enlarged OT. We also found that eye size and OT size are highly correlated across species. Phylogenetic analysis suggests that a reduced visual system evolved with the origins of an active electrosense...
Journal Articles
Brain Behav Evol (2013) 81 (1): 27–39.
Published Online: 29 December 2012
... size of visual regions in the brain. Owls, like all vertebrates, have several visual pathways from the retina to the brain [Bravo and Pettigrew, 1981; Bagnoli et al., 1990]. One of the main visual pathways in birds is the tectofugal pathway, which is comprised of three main structures: optic tectum...
Journal Articles
Brain Behav Evol (2011) 76 (3-4): 226–247.
Published Online: 24 January 2011
... on land. Using several different neuroanatomical tracers, we examined the substrates that may underlie these behavioral changes by tracing the afferent and efferent connectivity of the midbrain optic tectum across metamorphic development. Intratectal, tectotoral, tectotegmental, tectobulbar, and tecto...
Journal Articles
Journal Articles
Brain Behav Evol (1973) 8 (3): 224–237.
Published Online: 01 June 2010
... of the Optic Tectum 225 gions that are projected into the damaged area [Wurtz and Goldberg, 1972b]. Since the responses are made with longer latency, however, these authors suggest an attentional deficit rather than loss of a motor-com­ mand center. Since the motor-command hypothesis fits well data from other...
Journal Articles
Brain Behav Evol (1985) 26 (2): 81–90.
Published Online: 01 June 2010
... to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements. Pretectum Accessory optic system Optic tectum Basal optic nucleus Oculomotor nucleus Nucleus lentiformis mesencephali Optokinetic nystagmus (OKN) Poikilotherms Fish...
Journal Articles
Brain Behav Evol (2010) 75 (2): 122–137.
Published Online: 28 May 2010
... of visual input to the avian brain, detailed interspecific comparisons of the relative size of nuclei within the pathway, the optic tectum, nucleus rotundus and entopallium, are wanting. Here, we examine the allometric scaling relationships of each of these brain regions relative to the brain as a whole...
Journal Articles
Brain Behav Evol (1977) 14 (3): 217–237.
Published Online: 03 April 2008
...B. Bagnoli; W. Francesconi; F. Magni The influence of the visual wulst on the optic tectum of Columba livia were studied. Analysis of the surface field potential evoked by optic nerve stimulation showed that it is composed of two presynaptic waves (pr 1 and pr 2 ), a negative monosynaptic wave (N...
Journal Articles
Brain Behav Evol (1970) 3 (1-4): 57–71.
Published Online: 03 April 2008
...D. Ingle Brain Behav. Evol. 3: 57-71 (1970) Visual system Optic tectum Visuomotor function Feeding Orienting Avoidance Frog Rana pipiens Visuomotor Functions of the Frog Optic Tectum D. I ngle Neuropsychology Laboratory, McLean Hospital, Belmont, Mass. Introduction Comparative neurologists have...
Journal Articles
Brain Behav Evol (1977) 14 (4): 261–273.
Published Online: 03 April 2008
..., instructions or products referred to in the content or advertisements. Marine turtles Optic tectum Orientation Sea-finding Visual systems Brain Behav. Evol. 14: 261-273 (1977) Individual Differences in the Sea-Finding Mechanism of Hatchling Leatherback Turtles N. M r o s o v s k y Departments...
Journal Articles
Brain Behav Evol (1977) 14 (4): 251–260.
Published Online: 03 April 2008
...Andrew H. Bass In a previous experiment, it was demonstrated that the removal of portions of the optic tectum in a turtle, Podocnemis unifilis, impaired its ability to perform a horizontal vs. vertical line discrimination task. To further elucidate the nature of this deficit, turtles (P. unifilis...
Journal Articles
Brain Behav Evol (1968) 1 (6): 500–518.
Published Online: 03 April 2008
... from any ideas, methods, instructions or products referred to in the content or advertisements. Optic system Optic tectum Retina Feeding behaviour Toad Frog Orienting response Brain Behav. Evol. 1: 500-518 (1968) Optic system Optic tectum Retina Feeding behavior Toad Frog Orienting...
Journal Articles
Brain Behav Evol (1973) 8 (5): 340–365.
Published Online: 01 April 2008
... Medical Center, Syracuse, N. Y. Abstract. The role of the frog forebrain and Key Words midbrain in flux, wavelength and movement dis­ Amphibia crimination was investigated by behavioral testing Rana pipiens before and after selective ablations of the dorsal an­ Optic tectum terior thalamus and tectum...
Journal Articles
Brain Behav Evol (1973) 8 (3): 211–223.
Published Online: 01 April 2008
... orienting Key Words control system places considerable emphasis upon intrin­ Optic tectum sic and extrinsic loops, which selectively modulate tectal Orienting functions neurons. Understanding the function of such loops al­ Superior colliculus lows new approaches to comparative anatomy and phy­ Frogs siology...
Journal Articles
Brain Behav Evol (1976) 13 (1): 1–21.
Published Online: 28 March 2008
...J.R. Cotter Units recorded from the optic tectum of Gallus domesticus were tested for responses to visual, auditory and somesthetic stimuli. Units recorded from the superficial tectal layers (stratum opticum, stratum griseum et fibrosum superfi-ciale) responded only to visual stimuli. On the basis...
Journal Articles
Brain Behav Evol (1976) 13 (6): 451–467.
Published Online: 28 March 2008
...Naida M. Yolen; William Hodos Goldfish were trained to perform visual intensity and pattern discriminations . Three groups of fish had bilateral ablation of the caudal optic tectum, a fourth consisted of unoperated controls and a fifth group consisted of sham-operated controls. The fish were tested...
Journal Articles
Brain Behav Evol (1976) 13 (6): 468–474.
Published Online: 28 March 2008
...William Hodos; Naida M. Yolen Visual acuity was measured in three normal goldfish and two goldfish in which the caudal optic tectum had been ablated bilaterally. Compression of the retinotectal map was assumed to have occurred in the two operated fish, which were tested more than 200 days after...
Journal Articles
Brain Behav Evol (1975) 11 (3-4): 161–178.
Published Online: 27 March 2008
...Michael S. Raybourn Single-unit recordings in the frog''s optic tectum have demonstrated the existence of a systematic spatial separation between the direct contralateral and indirect ipsilateral excitatory receptive fields. Marked differences in this spatial organization were found between...