Search results for "Eye Movements"
showing 10 items of 95 documents
SOMATOTOPIC ORGANIZATION OF THE CRANIAL NERVE NUCLEI INVOLVED IN EYE MOVEMENTS: III, IV, VI.
2017
The oculomotor nucleus is divided into: 1. somatic medial column innervating the superior rectus muscle and somatic lateral column, further subdivided into a lateral column innervating the inferior rectus, inferior oblique and medial rectus muscles; 2. central nucleus innervating the levator palpebrae superioris muscle; 3. visceral nucleus innervating the pupillary sphincter muscle, consisting of the following two groups of neurons: cholinergic, preganglionic neurons supplying the ciliary ganglion, termed the Edinger- Westphal preganglionic (EWpg) neuron population, and the centrally projecting, peptidergic neurons, termed the Edinger-Westphal centrally projecting (EWcp) population. A detai…
Space information is important for reading
2009
AbstractReading a text without spaces in an alphabetic language causes disruption at the levels of word identification and eye movement control. In the present experiment, we examined how word discriminability affects the pattern of eye movements when reading unspaced text in an alphabetic language. More specifically, we designed an experiment in which participants read three types of sentences: normally written sentences, regular unspaced sentences, and alternatingbold unspaced sentences. Although there was a reading cost in the unspaced sentences relative to the normally written sentences, this cost was much smaller in alternatingbold unspaced sentences than in regular unspaced sentences.
Image Content Enhancement Through Salient Regions Segmentation for People With Color Vision Deficiencies
2019
Color vision deficiencies affect visual perception of colors and, more generally, color images. Several sciences such as genetics, biology, medicine, and computer vision are involved in studying and analyzing vision deficiencies. As we know from visual saliency findings, human visual system tends to fix some specific points and regions of the image in the first seconds of observation summing up the most important and meaningful parts of the scene. In this article, we provide some studies about human visual system behavior differences between normal and color vision-deficient visual systems. We eye-tracked the human fixations in first 3 seconds of observation of color images to build real f…
Visual exploration of face and facial expression in infancy: A qualitative approach of cognitive and social development
2016
International audience; This article proposes a methodological consideration for the use of "head free" eye-tracking systems, which allowed to extend this technique to the study of infant skills. It explores how the technological developments enable a more qualitative approach, which offers the possibility of considering "how" in addition to "how long" the infant looks at a visual scene, especially the scene of the face.
Acu kustības pabeigtu un nepabeigtu objektu kontūru izsekošanā
2016
Maģistra darbs ir uzrakstīts latviešu valodā uz 39 lapaspusēm. Tas satur 26 attēlus, 9 tabulas, 1 pielikums, 20 atsauces uz literatūras avotiem. Darba mērķis: Novērtēt acu kustības, izsekojot pabeigtu un nepabeigtu figūru kontūras. Metode: Acu kustības tika noteiktas, izmantojot acu kustību iekārtu IViewX RED500. Tika apskatīti fiksāciju un sakāžu raksturlielumi un acu kustību precizitāte. Subjekti: Pētījumā piedalījās 6 dalībnieki. Rezultāti: Izsekojot pabeigtu, nepabeigtu un izzūdošu figūru kontūras, nenovēroja būtiskas atšķirības sakāžu skaitā, vidējā amplitūdā un ātrumā, bet latence bija būtiski īsāka izzūdošas figūras aplūkošanas laikā. Pabeigtu un izzūdošu figūru kontūras izsekošana i…
Developmental dyslexia: Visual abnormalities during ocular rotation
2005
[u]Purpose[/u]: Most of the studies dealing with visual perception disabilities in children suffering from developmental dyslexia have been done in orthophoric position. The objective of the present study is to explore the visual perception during eye movements. [u]Methods[/u]: Sixty male patients (11.8 ± 1.8 years) were examined by neuropsychologists to evaluate reading difficulties. Visual perception during ocular rotation was assessed with a Clement Clarke synoptophore with G3–G4 slides, in primary gaze, then laterally at 20, 30 and 40° in dim light. [u]Results[/u]: Three main abnormalities were found. • Isolated perception abnormalities with intermittent shading of the image, central, p…
Nauczanie programowane lingwistycznie - czy to działa?
2016
Visual word recognition in fluent and dysfluent readers in the transparent Finnish orthography
2012
Sublexical effects on eye movements during repeated reading of words and pseudowords in Finnish
2011
The role of different orthographic units (letters, syllables, words) in reading of orthographically transparent Finnish language was studied by independently manipulating the number of letters (NoL) and syllables (NoS) in words and pseudowords and by recording eye movements during repeated reading aloud of these items. Fluent adult readers showed evidence for using larger orthographic units in (pseudo)word recoding, whereas dysfluent children seem to be stuck in a letter-based decoding strategy, as lexicality and item repetition decreased the NoL effect only among adult readers. The NoS manipulation produced weak repetition effects in both groups. However, dysfluent children showed evidence…