Vision: Does top-down processing help us to see?
نویسنده
چکیده
Anatomical studies of the visual cortex have identified massive back-projecting pathways. Theoretical studies suggest how such pathways may play important roles in vision by mediating 'top-down' processing, in which information from a relatively high level is fed back to early visual stages.
منابع مشابه
Event-Related Potentials of Bottom-Up and Top-Down Processing of Emotional Faces
Introduction: Emotional stimulus is processed automatically in a bottom-up way or can be processed voluntarily in a top-down way. Imaging studies have indicated that bottom-up and top-down processing are mediated through different neural systems. However, temporal differentiation of top-down versus bottom-up processing of facial emotional expressions has remained to be clarified. The present st...
متن کاملThe effect of bottom-up and top-down auditory program training on the development of children's auditory processing skills
Although there have been several previous investigations on the role of auditory training for the development of auditory processing skills, it still remains unknown whether children with auditory processing difficulties can get improved auditory skills after exposure to a multi-modal training experience comprising both visual and tactile stimuli. The present study, therefore, attempted to use ...
متن کاملThe effect of bottom-up and top-down auditory program training on the development of children's auditory processing skills
Although there have been several previous investigations on the role of auditory training for the development of auditory processing skills, it still remains unknown whether children with auditory processing difficulties can get improved auditory skills after exposure to a multi-modal training experience comprising both visual and tactile stimuli. The present study, therefore, attempted to use ...
متن کاملNow You See It, Now You Don’t: Verbal But Not Visual Cues Facilitate Visual Object Detection
Does knowing what one is about to see make it easier to see it? The answer may depend on the source of the knowledge. Participants completed an object detection task in which they made an object-presence or -absence decision to brieflypresented letters. Hearing the letter name prior to the detection task facilitated detection (d’), but seeing a preview of the to-be-detected stimulus did not. Fo...
متن کاملDoes a Plane Imitate a Bird? Does Computer Vision Have to Follow Biological Paradigms?
We posit a new paradigm for image information processing. For the last 25 years, this task was usually approached in the frame of Triesman’s twostage paradigm [1]. The latter supposes an unsupervised, bottom-up directed process of preliminary information pieces gathering at the lower processing stages and a supervised, top-down directed process of information pieces binding and grouping at the ...
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:
- Current Biology
دوره 8 شماره
صفحات -
تاریخ انتشار 1998