Search results for "Display"
showing 10 items of 249 documents
Species-specific sex pheromones secreted from new sexual glands in two sympatric fungus-growing termites from northern Vietnam, Macrotermes annandale…
2004
Reproductive isolation in termites is not well known. Our study carried out on two sympatric species from northern Vietnam, Macrotermes annandalei and M. barneyi, showed that dispersal flights and sex pheromones were two important factors in their reproductive isolation. These fungus-growing termites were isolated, partially due to the timing of their respective dispersal flights. M. annandalei flew the first day after rain, while the flights of M. barneyi occurred the second day after rain. However, the flights can also be simultaneous in the two species. Sex pheromones of M. annandalei and M. barneyi were shown to be species-specific. In both species, they were secreted by females from tw…
Long-term gene expression changes in the cortex following cortical ischemia revealed by transcriptional profiling
2006
Cerebral ischemia evokes changes in gene expression time-dependently after the ischemic event. Most studies on transcriptional changes following ischemia have centered on relatively early postischemic time points, and detected multiple genes relevant to neuronal cell death. However, functional outcome after ischemia depends critically on adaptations of the postischemic brain. Plasticity may derive from network-inherent changes, or from the formation of new nerve cells in the CNS. We have screened for gene expression changes up to 3 weeks following a limited photothrombotic cortical insult in the rat sensorimotor cortex by using the sensitive restriction-mediated differential display (RMDD) …
PGal4 excision reveals the pleiotropic effects of Voila, a Drosophila locus that affects development and courtship behaviour
2001
0016-6723 (Print) Journal Article Research Support, Non-U.S. Gov't; In Drosophila melanogaster, the PGal4 transposon inserted at the chromosomal site 86E1-2 is associated with the Voila1 allele that causes multiple phenotypes. Homozygous Voila1/1 flies rarely reach adulthood and heterozygous Voila1/+ adult males display strong homosexual courtship behaviour. Both normal behavioural and developmental phenotypes were rescued by remobilizing the PGal4 element. Yet, the rescue of heterosexual courtship and of adult viability did not occur in the same strains, indicating that these defects have different genetic origins. Furthermore, many strains showed a partial rescue of both characters. Molec…
Hacia la caracterización del epítopo del autoantígeno en el Síndrome de Goodpasture
2014
El síndrome de Goodpasture (GP) es un desorden autoinmune que cursa con glomerulonefritis rápidamente progresiva y hemorragia pulmonar. El ataque inmunológico se lleva a cabo mediante (auto)-anticuerpos (anticuerpos GP) dirigidos contra el dominio C terminal, no colagenoso (NC1), de la cadena α3 del colágeno IV, presente en la membrana basal glomerular (GBM), así como en la membrana basal alveolar. Tres cadenas α se asocian para construir una molécula de colágeno IV, que recibe el nombre de protómero, dos protómeros de colágeno IV se unen a través de sus extremos NC1 para formar una estructura cuaternaria de naturaleza hexamérica (hexámero) en la red de colágeno IV. Estudios cristalográfico…
A Semiotic Approach to the Design of Non-speech Sounds
2006
In the field of auditory display there is currently a lack of theoretical support for the design of non-speech sounds as elements of a user interface. Sound design methods are often based on ad hoc choices or the personal preferences of the designer. A method is proposed in this paper based on a semiotic approach to the design of non-speech sounds. In this approach, the design process is conceptualised by referring to structural semiotics, acknowledging the unique qualities of non-speech sounds, as a mode of conveying information. This method is based on a rich use scenario presented to a design panel. A case study where the design method has been applied is presented and evaluated. Finally…
Intra-visual conflict in visually induced motion sickness
2011
Abstract Motion sickness (MS) can be a debilitating side-effect not just of sea travel, but also when immersed in video games or virtual environments (visually induced MS). To explore the impact of visual display parameters on motion sickness, we presented footage taken on an automobile race track to different groups of observers during three experiments. In Experiment 1, one group watched the movie wearing a head-mounted display (HMD) and a second group looked at a large projection screen with unrestricted view. Resolution and visual angle were equated. In contrast to common assumption, the projection screen produced significantly higher motion sickness scores than the HMD. To understand t…
Assessment of spatial perception for a multi-layer volumetric display: the effect of exocentric and egocentric distance on relative depth judgements
2020
Three-dimensional images on multiple depth layers of the volumetric display provide the physiological depth cues which ensure the high precision of depth judgements at close viewing distances and enhance the user experience. However, the contribution of physiological cues declines with an increase of viewing distance (egocentric distance), and the human spatial perception varies depending on the inter-stimuli distance (exocentric distance). We conducted a psychophysical experiment to test the perception of three-dimensional images rendered on the volumetric display depending on exocentric and egocentric stimuli distance. The constant angular size visual stimuli were displayed on different d…
Visual Search Performance Depending on Target-Distractor Difference on Volumetric Display and Flat Panel Display
2019
The search items were demonstrated on the volumetric display and flat panel display. In contrast to the correct response rate, the search time and number of interactions were considerably affected by the type of visualization.
Visual search in three-dimensional non-medical images: visual-motor performance of radiologists
2019
The visual search abilities of radiologists are systematically trained due to the specifics of their professional tasks. We investigated whether the visual-motor performance of radiologists, residents and students varied when searching non-medical targets on the volumetric display. As a result, no significant differences were found in the correct response rate among three groups. However, the total number of interactions was considerably higher for the resident radiologists and medical students comparing to the experienced radiologists. Our results suggest that the radiological experience does not interfere with the outcome in the developed visual search task, but may be reflected in motor …
EEG smadzeņu aktivitātes novērtējums trīs-dimensiju attēlu uztverē
2021
Darbs ir uzrakstīts angļu valodā uz 30 lapaspusēm. Tas satur 9 attēlus, 1 tabula un 26 atsauces uz literatūras avotiem. Tā kā trīsdimensiju tehnoloģijas strauji attīstās, pētījumos nepieciešams izvērtēt iekārtas un to mijiedarbību ar cilvēku. Pētījuma mērķis ir novērtēt uzvedības un neirofizioloģiskās iezīmes cilvēkiem, kuri veic uzdevumu izmantojot divas dažādas vizualizācijas: volumetrisko un stereoskopisko. Izmantojot elektroencefalogrāfiju tika reģistrēta smadzeņu aktivitāte un analizēti iegūtie potenciāli un neirālās svārstības. Spēcīgu dziļuma uztveres ietekmi ar abām vizualizācijas tehnoloģijām novēroja tikai vēlīnos uztveres procesos paura garozas reģionā. Turklāt ātrāks reakcijas l…