Variation of fixation direction with colour of fixation target.
نویسنده
چکیده
IN the course of recording eye movements it has become evident that the fixation direction of the eye changes slightly when the colour of the fixation target is changed. The technique used is that described by Ditchburn and Ginsborg (1953), photographing the movements of a beam of light reflected from a mirror attached to a contact lens worn by a subject. Several modifications as described by Fender (1955) have been introduced.
منابع مشابه
Measurement of the immobilisation efficacy of a head fixation system
Background: In order to assign appropriate planning target volume (PTV) margins, each centre should measure the patient positioning deviations for their set-up techniques. At the Royal Marsden Hospital, UK, a conformal shell (cast) system is used when a stereotactic frame is not suitable. In this paper, we report on a series of measurements with the aim of obtaining the systematic and random ...
متن کاملIrrelevant features at fixation modulate saccadic latency and direction in visual search
Do irrelevant visual features at fixation influence saccadic latency and direction? In a novel search paradigm, we found that when the feature of an irrelevant item at fixation matched the feature defining the target, oculomotor disengagement was delayed, and when it matched a salient distractor more eye movements were directed to that distractor. Latency effects were short-lived; direction eff...
متن کاملاثر جایگاه منو بر توجه بصری کاریران وب سایتها
Objective: In order to identify users’ visual attention to left- and right-aligned menus on web pages, fixation count index (FCI) was assessed for both left and right menus using eye tracker to determine which menu is preferred by users in terms of visual attention. Methodology: In total, 116 pages with their menus aligned to left or right, classified into three groups, namely Persian pages, En...
متن کاملبررسی میزان موفقیت در جاگذاری 180 پیچ پدیکولار بکاررفته در شکستگیهای ناپایدار ستون فقرات توراکولومبار با استفاده از رادیوگرافی ساده در حین عمل جراحی
Background & Aims: Thuracolumbar Unstable Fractures (T, L.U.F) are common after spine truma. Posterior pedicular fixation is a technique that is use for fixation of these fractures. This study evaluates the accuracy of pedicular screw placement in T, LUF with the assistance of plain radiography in operation rooms. Materials & Methods: This study is a case-control and analytical study. 35 pa...
متن کاملThe Effect of Reactive Dye Structure on the Ink-Jet Printing of Cotton
The purpose of this study was to investigate the effect of the structure of reactive dye on cotton ink-jet printing. Cotton fabric was printed upon with three commercial cellulosic reactive dyes which are based on the similar chromophore and possess different numbers of reactive and anionic groups. Colour yield and absorbed dye fixation of the printed cotton were evaluated at various pHs. The i...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- The British journal of ophthalmology
دوره 39 5 شماره
صفحات -
تاریخ انتشار 1955