(n.) One of several species of large, crested ground pigeons of the genus Goura, inhabiting New Guinea and adjacent islands. The Queen Victoria pigeon (Goura Victoria) and the crowned pigeon (G. coronata) are among the beat known species.
Example Sentences:
(1) The authors report an epizootic form of toxoplasmosis observed among the crowned pigeons (Goura cristata Pallas and Goura victoria Frazer).
(2) These include Althouma, Mahdiya, Moqataa, Lofayta and Goura, among others.
(3) Response latencies to electrical stimulation of the optic chiasm were determined for 130 cells; no X-like cell showed a latency shorter than 1-7 ms, no Y-like cell showed a latency longer than 1-6 ms. Primate lateral geniculate nucleus cells with X-like properties thus receive their excitatory input from retinal cells with slowly conducting axons and these most probably include the tonic ganglion cells described by Gouras (1968, 1969); Y-like lateral geniculate nucleus cells are driven by retinal cells with faster conducting axons, most probably including the phasic ganglion cells described by Gouras.
(4) A method to selectively stimulate the rod- and cone-system, developed by Gouras and co-workers, has proved to allow further differentiation of heredodegenerative diseases of the retina.
(5) An unusual form of retinal degeneration is reported in 15-year-old girl and 11-year-old girl with different pedigrees, which resembles the cases reported by Gouras and associates (1983).
(6) The experiments were repeated at several eccentricities and the results show that, for a test target and background field of the same colour and under conditions which isolate the green or red spectral response mechanism, the minimum target displacement required for motion detection appears to increase in a manner similar to the centre-width receptive-field size of broad-band, centre--surround transient neurons in the rhesus monkey retina [De Monasterio and Gouras (1975) J.
(7) The agreement between the behaviourally determined perceptive field centre sizes and the receptive field centre sizes of broadband cells (measured by DeMonasterio and Gouras 1975) is excellent.
(8) In contrast, signals from the short-wavelength-sensitive (SWS) cones and dark-adapted rod photoreceptors are thought to be carried almost exclusively by ON bipolar cells (Gouras & Evers, 1985).
Pigeon
Definition:
(n.) Any bird of the order Columbae, of which numerous species occur in nearly all parts of the world.
(n.) An unsuspected victim of sharpers; a gull.
(v. t.) To pluck; to fleece; to swindle by tricks in gambling.
Example Sentences:
(1) However, the characteristics of pigeon atherosclerosis at other vascular sites have not been extensively studied.
(2) There are thus clear similarities in the overall pattern of somatosensory projections in the pigeon and in many mammalian species.
(3) The behavioral effects of phenytoin, phenobarbital, clonazepam, valproic acid, and ethosuximide were evaluated in food-deprived pigeons performing under automaintenance and negative automaintenance procedures.
(4) The pigeon's metapatagialis muscle consists of three slips, two twitch and one tonic, and these slips are distinguishable at the gross anatomical level.
(5) The gain of anterior SC primary afferents at 0.25 Hz is similar for anesthetized (2.93 I X s-1 X deg-1 X s-1, n = 14) (11) and for unanesthetized (3.01 I X s-1 X deg-1 X s-1, n = 14) pigeons.
(6) A series of seven experiments related amplitude and latency of the pigeon's startle response, elicited by an intense visual stimulus, to antecedent auditory and visual events in the sensory environment.
(7) Immunohistochemical techniques were used to survey the distribution of several conventional transmitters, receptors, and neuropeptides in the pigeon nucleus of the basal optic root (nBOR), a component of the accessory optic system.
(8) Immunoglobulin G (IgG), A (IgA) and M (IgM) antibody activity against pigeon serum was demonstrated in the patient's serum by a solid phase radioimmunoassay (RIA) technic.
(9) The activities of choline acetyltransferase and acetylcholinesterase were assayed in submicrogram samples from layers of pigeon retina.
(10) Erythrocytes from pigeons and 1-day-old chicks gave similar antigen and antibody titers, but goose erythrocytes gave lower titers.
(11) But my timid scrunch-face puts me so behind the curve that I might as well start training carrier pigeons.
(12) The serratus metapatagialis (SMP) muscle of the pigeon has been studied histochemically and ultrastructurally.
(13) Pigeon Type I horizontal cells are Cajal's "brush-shaped" cells, and their axon terminals resemble Cajal's "stellate" cells.
(14) The mechanism of pyruvate-2,6-dichlorophenol-indophenol (2,6-CPI) reductase reaction catalyzed by the pyruvate dehydrogenase complex from pigeon breast muscle and by its pyruvate dehydrogenase component was studied.
(15) Most of the time when we talk about pollution people think about Beijing or other places, but there are some days in the year when pollution was higher and more toxic in London than Beijing, that’s the reality.” He said he was inspired by the use of pigeons in the first and second world wars to deliver information and save lives, but they were also a practical way of taking mobile air quality readings and beating London’s congested roads.
(16) The local pigeon crop-sac assay was used to test the direct effects of epidermal growth factor (EGF) and several other growth factors and hormones on the growth of mucosal epithelial cells in vivo.
(17) Nine pigeons in a matching-to-sample task with 5 alternative stimuli were exposed to 4 dose levels of sodium pentobarbital.
(18) In pigeon liver, only purine nucleoside phosphorylase was increased but xanthine dehydrogenase activity was not detected after feeding a high protein diet, while both enzyme activities were increased in the pigeon kidney.
(19) The authors report an epizootic form of toxoplasmosis observed among the crowned pigeons (Goura cristata Pallas and Goura victoria Frazer).
(20) Pigeons are able to home from unfamiliar sites because they acquire an olfactory map extending beyond the area they have flown over.