BACKGROUND: Inconsistent findings on coupled illumination, accumulated noise and task complexity effects on cognitive-motor performance asked for a more comprehensive analysis by focusing on performance dynamics. OBJECTIVE: The aim was to investigate the effects of illumination, accumulated noise, and task complexity on several average and non-average temporal indicators. METHODS: The research was designed as a mixed factorial quasi-experiment including 83 students of transport (n = 42) and psychology (n = 41) at the University of Zagreb. Participants were assigned to designated experimental conditions defined by illumination (40, 280, 3400 lx), and accumulated noise (0% and 50% of the daily exposure limit) levels and all performed 2- and 8-choice reaction time tests. RESULTS: The findings showed negative effects of accumulated noise and task complexity on all performance indicators, while the effect of illumination reached significance only for maximal speed. Significant Illumination x Task complexity and Illumination x Accumulated noise effects were obtained for average efficiency, while significant Accumulated noise x Task complexity effect was observed for average efficiency and maximal speed. CONCLUSIONS: Various indicators of performance dynamics were diversely affected by external factors, thereby suggesting the effects’ mechanisms, and accentuating different guidelines for design of workplaces that include these environmental stressors.
In the management of congenital, ocular nystagmus as well surgical procedures (according Kestenbaum, Anderson and similar modifications) with the purpose of shifting nystagmus "neutral zone" in the primary position of gaze, as nonsurgical treatment with prisms, show favourable effect on head position, nystagmus intensity and visual acuity. In this preliminary report the authors tried to evaluate, by means of electronystagmography, their clinical experiences in some treated nystagmus cases, objectively. The electronystagmographic findings of nystagmus amplitude, frequency and intensity, depending on position of gaze, were before and after surgery, respectively treatment analysed.
SažetakIzvršne funkcije integrirajući su sustav međusobno povezanih središnjih neuralnih procesa koji reguliraju kognitivne funkcije višeg reda te omogućuju razumijevanje ljudskog ponašanja. Oštećenje izvršnih funkcija očituje se teškoćama u samostalnom i svrhovitom obavljanju svakodnevnih aktivnosti. Cilj je ovog rada analizirati okupacijsku izvedbu osobe s teškoćama izvršnih funkcija primjenom procjene koja se ne usmjerava na izolirane značajke izvršnih funkcija, već na njihovu integraciju u kontekstu zadatka koji se izvodi. U skladu s okupacijskom paradigmom povezanosti okupacija i zdravlja, primijenjen je Test izvedbe izvršnih funkcija (Executive Function Performance Test; EFPT) i predočen kroz prikaz slučaja ženske osobe nakon operacije frontalnog meningeoma. Premda test zadovoljava psihometrijske karakteristike, neprilagođenost hrvatskom kontekstu te opisi zadataka koji dozvoljavaju samo jedan način izvedbe njegovi su glavni uočeni nedostaci. Također, standardizirani sustav navođenja predviđen u testu ne mora odražavati i stvarnu potrebnu razinu pomoći, budući da testni pribor nije sortiran u skladu s realnim kontekstom. Unatoč tome, s gledišta okupacijski orijentirane rehabilitacije i nedostatka ovakvih instrumenata u praksi, Test izvedbe izvršnih funkcija potencijalno je vrlo korisna procjena stupnja neovisnosti u aktivnostima dnevnog života. U radu su predložena rješenja navedenih metodoloških izazova u primjeni testa.Ključne riječi: izvršne funkcije, okupacijska procjena, prikaz slučaja Datum primitka: 06.07.2017.
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