The afferent connections of the nucleus rotundus in the pigeon
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Cited by (195)
Pharmacological manipulation of GABA activity in nucleus subpretectalis/interstitio-pretecto-subpretectalis (SP/IPS) impairs figure-ground discrimination in pigeons: Running head: SP/IPS in figure-ground segregation
2018, Behavioural Brain ResearchCitation Excerpt :Collothalamic pathway begins by transmitting retinal input to a contralateral optic tectum (TeO), and then to the thalamic nucleus rotundus (Rt). The TeO maintains precise retinotopic organization with narrowly tuned receptive fields in outer layers [12–14] and progressively wider receptive fields in deeper layers [14–17]. In contrast, visual information is segregated functionally in the Rt, with color-sensitive cells in the dorsoanterior region, motion-sensitive cells in the posterior region, and luminance-sensitive cells in the central region [18].
Exploring sex differences in the adult zebra finch brain: In vivo diffusion tensor imaging and ex vivo super-resolution track density imaging
2017, NeuroImageCitation Excerpt :This observation contrasts with previous findings. Even though nucleus rotundus receives input from the TeO of both the ipsi- and contralateral hemispheres (Karten and Revzin, 1966; Schmidt and Bischof, 2001), no tracer studies report on the existence of a connection between left and right nucleus rotundus. Furthermore, the streamlines seeded in nucleus rotundus do not reach the TeO, consequently the resulting trans-hemispheric connection appears misleading.
Decoding synchronized oscillations within the brain: Phase-delayed inhibition provides a robust mechanism for creating a sharp synchrony filter
2013, Journal of Theoretical BiologyCitation Excerpt :Interestingly, the spatial tuning curve and contrast-response function of an OT site vary depending on whether responses are measured in terms of firing rate or gamma power, suggesting that spike rate and gamma oscillations may be used to relay information in parallel (Patel and Reed, 2013; Sridharan et al., 2011). Tectal fibers stream towards the nucleus rotundus of the thalamus, emanating collaterals en-route to innervate the GABAergic pretectal nuclei, whose axons course towards rotundal cells as well (Benowitz and Karten, 1976; Deng and Rogers, 1998; Karten et al., 1997; Karten and Revzin, 1966; Luksch et al., 1998; Mpodozis et al., 1996; Tombol et al., 1994). Neurons of the nucleus rotundus are therefore in an ideal position to use phase-delayed inhibition to selectively decode the synchronized gamma oscillations of their tectal inputs (Patel and Reed, 2013).
Figure-ground discrimination in the avian brain: The nucleus rotundus and its inhibitory complex
2012, Vision ResearchCitation Excerpt :TeO is a large spherical structure that consists of 15 layers of neurons in which the outer layers maintain a precise retinotopic representation with narrowly tuned receptive fields (Hamdi & Whitteridge, 1954; Jassik-Gerschenfeld & Guichard, 1972). Deeper tectal layers, however, have progressively wider receptive fields that increase up to 180° in layer 13, the exclusive source of efferent projections to Rt (Frost & DiFranco, 1976; Hellmann & Güntürkün, 2001; Jassik-Gerschenfeld & Guichard, 1972; Karten & Revzin, 1966). Retinotopic coding is lost in Rt, the largest thalamic nucleus (Benowitz & Karten, 1976; Hellmann & Güntürkün, 1999).
Calcium-binding proteins label functional streams of the visual system in a songbird
2008, Brain Research Bulletin
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Present address: Massachusetts Institute of Technology, Department of Psychology, Cambridge, Mass. 02139 (U.S.A.).