One fixates accurately in order to see clearly not because one sees clearly.
نویسندگان
چکیده
Binocular gaze was measured accurately under natural conditions with the Maryland Revolving Field Monitor to determine how visual-clarity affects gaze-accuracy. The gaze of 3 unrestrained, seated subjects (2 presbyopes and 1 myope) was recorded as they tapped 4 LEDs with a long, narrow rod cemented to a thimble worn on their index fingers. They wore positive contact lenses, permitting very clear vision only nearby, within 35 cm. This task was hard. It took more than 7 seconds to complete. Gaze-accuracy varied inversely with target-distance. Gaze was less accurate when targets were nearby, and seen clearly, than when targets were farther away and harder to see. This result was not anticipated. It implies that gaze is accurate in order to see clearly and not because targets can be seen clearly.
منابع مشابه
Scotopic foveal afterimages.
If, after being in the dark for many minutes, one views an extended surface under dim (scotopic) illumination, one fails to see any hint of the dark spot at the center of gaze that might be expected from the absence of rods in the fovea. Here we report that, if the surface is suddenly completely darkened, one sees for a few seconds a relatively bright spot, about 2 deg in size, at the point of ...
متن کاملمدیریت زمان
EXTRACTone of the best ways of exploitation of time is using time management intelligently and permanently. Time management enable individuals to control their times and affairs. By measuring time accurately and by having general image of our lives, individuals can draw their future clearly and broadly, and therefore have a successful life. Today by development of technology and sciences, the i...
متن کاملP-171: A Review of The Patient Consent Satisfaction) in Medical Procedures and The Legal Responsibility of Physicians Toward Patients
s:6941:"Background: Consent (satisfaction) of patient is effective in criminal responsibility of physician and his/her compurgation. Consent in word means agreement or permission. Before discussion about the effect of patient consent or his/her parents in medical responsibility, there is a question that “if victim (patient) accepted crime against himself with free will all its consequences, is ...
متن کاملReading the first period (1627-1631) self-portraits by Rembrandt based on the concept of Das Ding in Lacan Theory
Rembrandt, in his early self-portraits, clearly forbids the audience from seeing. The distinguishing feature of these works not in the clearly displayed sections, but in the glorious representation of the lost information. In other words, Rembrandt uses visual principles and qualities in order not to represent himself accurately. This prompted the researcher to read psychoanalytically the self...
متن کاملIbn Arabi’s view on the seal of the friends, khatam ul-awlia
One of the most important subjects dealt with in Islamic mysticism is known to be the subject of the seal of the friends, khatam al-awlia. The main question of the paper has centered on Ibn Arabi’s thought on the seal of the friends. It is commonly viewed that he has known himself as the seal of the friends. Again one can see clearly the same title for Isa, the mesih, in his works. In this ...
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:
- Spatial vision
دوره 16 3-4 شماره
صفحات -
تاریخ انتشار 2003