Search results for "C.L.I.L."

Paradox lost: variable colour-pattern geometry is associated with differences in movement in aposematic frogs

2014

Aposematic signal variation is a paradox: predators are better at learning and retaining the association between conspicuousness and unprofitability when signal variation is low. Movement patterns and variable colour patterns are linked in non-aposematic species: striped patterns generate illusions of altered speed and direction when moving linearly, affecting predators' tracking ability; blotched patterns benefit instead from unpredictable pauses and random movement. We tested whether the extensive colour-pattern variation in an aposematic frog is linked to movement, and found that individuals moving directionally and faster have more elongated patterns than individuals moving randomly and…

Perception of illusory surfaces and contours in goldfish

2007

Goldfish(Carassius auratus)were trained to discriminate triangles and squares using a two choice procedure. In the first experiment, three goldfish were trained with food reward on a black outline triangle on a white background, while a black outline square was shown for comparison. In transfer tests, a Kanizsa triangle and a Kanizsa square were presented, perceived by humans as an illusory triangle- or square-shaped surface of slightly higher brightness than the background. The choice behavior in this situation indicates that goldfish are able to discriminate between both figures in almost the same way as in the training situation. In control experiments goldfish did not discriminate betwe…

Mauro Bonazzi, I Sofisti. Pensatori, 18. Roma: Carocci Editore, 2010. Pp. 183. ISBN 9788843055913

2011

Mismatch brain response to speech sound changes in rats

2011

Understanding speech is based on neural representations of individual speech sounds. In humans, such representations are capable of supporting an automatic and memory-based mechanism for auditory change detection, as reflected by the mismatch negativity of event-related potentials. There are also findings of neural representations of speech sounds in animals, but it is not known whether these representations can support the change detection mechanism analogous to that underlying the mismatch negativity in humans. To this end, we presented synthesized spoken syllables to urethane-anesthetized rats while local field potentials were epidurally recorded above their primary auditory cortex. In a…

Parents' experiences of neonatal transfer. A meta-study of qualitative research 2000-2017.

2018

Transfers of critically ill neonates are frequent phenomena. Even though parents’ participation is regarded as crucial in neonatal care, a transfer often means that parents and neonates are separated. A systematic review of the parents’ experiences of neonatal transfer is lacking. This paper describes a meta-study addressing qualitative research about parents’ experiences of neonatal transfer. Through deconstruction and reflections of theories, methods and empirical data, the aim was to achieve a deeper understanding of theoretical, empirical, contextual, historical and methodological issues of qualitative studies concerning parents’ experiences of neonatal transfer over the course of this …

Mācību satura integratīvais aspekts ģeogrāfijas stundās mācīšanās motivācijas paaugstināšanai

2015

Pētījuma problēmas būtība ir Skolēnu nepietiekamās spējas iegūtās zināšanas vienā mācību priekšmetā izmantot jaunās situācijās, attīstīt un pielietot citos priekšmetos. Skolēnu izzinās spējas pilnveidošanos mācīšanas motivācijas paaugstināšanai skolotājs ierosina Skolēnu pamatojumu atbildēt uz jautājumiem: Kāpēc jāmāca? Kāpēc jāzina? Pētījuma mērķis ir izpētīt mācību satura integratīvo aspektu Skolēnu izziņas spēju pilnveidošanai un mācīšanās motivācijas paaugstināšanai. Pētījumā tika integrēti pieci mācību priekšmeti: ģeogrāfija, bioloģija, ķīmija, vēsture, angļu valoda un informātika. Integrētās stundas realizācijai Tehnikumā tika aprobētas daudzveidīgas mācību metodes: C.L.I.L., WebQuest…

Comparativa entre lentes intraoculares multifocales: TECNIS Symphony vs AcrySof PanOptix

2016

PROPOSITO: Evaluar el rendimiento visual de la LIOM TECNIS® Symfony y compararla con la LIOM AcrySof® IQ PanOptix™. MÉTODO: Treinta y ocho pacientes (68 ojos) se dividieron en dos grupos: dieciocho pacientes fueron asignados al grupo de Symfony y veinte pacientes al grupo de PanOptix. Los parámetros analizados fueron UDVA, UIVA, UNVA, CDVA, CDIVA, CDNVA, la SC y las curvas de desenfoque monocular ambas en condiciones fotópicas y en un rango de +3 a -5 D en pasos de 0.5 D junto con un cuestionario de calidad de vida. RESULTADOS: Las diferencias de UDVA, CDVA, UIVA, CDIVA no fueron estadísticamente significativas (test Mann-Whitney; p-valor>0.31). Sin embargo, la PanOptix obtuvo mejores resul…

A Mission Impossible? Learning the Logic of Space with Impossible Figures in Experience-Based Mathematics Education

2016

Most visual effects based on mathematically and physically describable phenomena and formalizable processes. Creating visual illusions, paradox structures and ‘impossible’ figures through playful and artistic procedures, holds an exciting pedagogical opportunity for raising students’ interest towards mathematics and natural sciences and technical aspects of visual arts. The Experience Workshop Math-Art Movement has a number of pedagogical methods, which are connected to visual paradoxes and perspective illusions. In the first part of our article, we introduce classroom exercises connected to the Hungarian artist Tamás F. Farkas’s paradox structures and impossible figures. There are certain …

Color induction via non-opponent lateral interactions in the human retina

1992

Retinal connections causing colors in Benham's top (pattern induced flicker colors, PIFCs) are investigated by psychophysical experiments. PIFCs are still seen when stimuli to different cones are demodulated selectively, indicating the involvement of non-opponent channels. PIFCs also occur on retinal areas next to those affected by modulated stimuli; further, both monochromat and dark-adapted trichromats perceive PIFCs which are achromatic. These additional findings point to horizontal cells as neuronal mediators of modulated excitation leading to PIFCs. The unspecifity of the postulated connection with respect to cone types agrees with anatomic findings of Boycott, B. B., Hopkins, J. M. an…

Optical illusions in scanning electron micrographs: the case of the eggshell of Acrosternum (Chinavia) marginatum (Hemiptera: Pentatomidae)

2003

Scanning electron microscopy revealed that-as is common in this family of the Hemiptera-the eggs of the green stink bug Acrosternum (Chinavia) marginatum are roughly barrel-shaped and possess at their apical pole a row of slender extensions, the aero-micropylar processes. The outer surface of the eggshell carries hexagonally arranged pits. The analysis of cross-fractured eggshells showed that the pits have slender basal extensions with transverse diaphragms. When scanning electron micrographs of the egg surface of A. marginatum are viewed upside down, the perception flips and the pits appear as elevations to all observers addressed. Thus, we are dealing with an optical illusion, which is kn…