Top-down projections to the primary visual areas necessary for object recognition: A case study
نویسندگان
چکیده
منابع مشابه
Top-down projections to the primary visual areas necessary for object recognition: A case study
We present a patient, who, following a right posterior ischemia, showed a selective deficit in visually recognising pictures, objects and faces. She was able to read and comprehend any kind of written material and could recognise letters and numbers. Her inability to recognise pictures did not arise from a deficit at the structural description level and/or from a poor semantic knowledge of the ...
متن کاملa computational visual neuroscience model for object recognition
in this study with the inspirations from both neuroscience and computer science, a combinatorial framework for object recognition was proposed having benefited from the advantages of both biologically-inspired hmax_s architecture model for feature extraction and extreme learning machine (elm) as a classifier. hmax model is a feed-forward hierarchical structure resembling the ventral pathway in ...
متن کاملA Top-down Perception Approach for Object recognition
In this article we present a multi-purpose generic top-down algorithm. It is designed here for object recognition and is based on a progressive focusing. The object is assumed as constituted with several parts. The recognition is made by the detection of theses parts. The initial values and the relationships between each part are grouped in a state vector with its a priori knowledge mean value ...
متن کاملA cortical mechanism for triggering top-down facilitation in visual object recognition.
The majority of the research related to visual recognition has so far focused on bottom-up analysis, where the input is processed in a cascade of cortical regions that analyze increasingly complex information. Gradually more studies emphasize the role of top-down facilitation in cortical analysis, but it remains something of a mystery how such processing would be initiated. After all, top-down ...
متن کاملTop-down facilitation of visual recognition.
Cortical analysis related to visual object recognition is traditionally thought to propagate serially along a bottom-up hierarchy of ventral areas. Recent proposals gradually promote the role of top-down processing in recognition, but how such facilitation is triggered remains a puzzle. We tested a specific model, proposing that low spatial frequencies facilitate visual object recognition by in...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Vision Research
سال: 2010
ISSN: 0042-6989
DOI: 10.1016/j.visres.2010.03.018