Identification, classification and anatomical segregation of cells with X‐like and Y‐like properties in the lateral geniculate nucleus of old‐world primates.

Corollary discharge: Its possible implications in visual and oculomotor interactions

“…form), while Y and W types would analyze movement [56,57]. Although most of this work has been carried out in the cat, a similar dichotomy is thought to exist in the monkey [58,59]. In contrast to the cat, it seems that in the monkey, the X and Y systems are morphologically segregated at the LGd level, the magnocellular layers constituting the Y system, and the parvocellular layers, the X system [59].…”

“…Although most of this work has been carried out in the cat, a similar dichotomy is thought to exist in the monkey [58,59]. In contrast to the cat, it seems that in the monkey, the X and Y systems are morphologically segregated at the LGd level, the magnocellular layers constituting the Y system, and the parvocellular layers, the X system [59]. It is precisely in the magnocellular compartment that BAR'rLETT * However, a short report by VALLEALA [51] in alert monkeys had shown the occurrence of clearcut modifications of visual cortex neuron activity during saccades in the dark.…”

Subcortical Mechanisms of Feature-Based Attention

“…The retinotopic subcortical visual nucleithe superior colliculus (SC), the lateral geniculate nucleus (LGN), and two pulvinar nuclei-are highly spatial selective (Allman et al, 1972;Cynader and Berman, 1972;Goldberg and Wurtz, 1972;Malpeli and Baker, 1975;Bender, 1981;Benevento and Standage, 1983;Cusick et al, 1993;Schneider et al, 2004;Kastner, 2005, 2009), but their nonspatial feature selectivity varies: neurons in the superficial layers of the SC respond well to many stimuli largely independent of contrast, orientation, size, shape, or velocity (Humphrey, 1968;Schiller and Koerner, 1971;Cynader and Berman, 1972;Goldberg and Wurtz, 1972;Schiller and Stryker, 1972;Marrocco and Li, 1977); LGN neurons are segregated into layers of monochromatic and quickly adapting magnocellular neurons and chromatic and more sustained parvocellular neurons (Wiesel and Hubel, 1966;Dreher et al, 1976;Creutzfeldt et al, 1979;Shapley et al, 1981;Derrington and Lennie, 1984;Merigan and Maunsell, 1993;Schneider et al, 2004;Solomon et al, 2004); and pulvinar neurons encode features such as direction of motion and orientation (Mathers and Rapisardi, 1973;Gattass et al, 1979;Benevento and Miller, 1981;Bender, 1982;Petersen et al, 1985;Merabet et al, 1998;Casanova et al, 2001).…”

Metacontrast, target recovery, and the magno- and parvocellular systems: A reply to the perspective

“…The suppressive effects of red light on the response of magnocellular neurons throughout the retino-geniculo-striate tract of macaques have been reported repeatedly (Wiesel & Hubel, 1966;Dreher et al, 1976;De Monasterio & Schein, 1980;Marrocco et al, 1982;Livingstone & Hubel, 1984). Skottun's (2004) analysis of parvocellular color-opponent cells points out that uniform red, green, and blue backgrounds may also differentially affect responses within, especially, the R-G opponent system.…”