objectives: the aim of this study is to evaluate the effects of olfaction, audition and tactile senses in mobility and orientation of blinds. methods: the statistical sample of this research included 100 blind persons aged between 16 and 75 years (61 males and 39 females) with different level of education (16 persons lower than the diploma, 26 persons diploma, 46 persons bachelor, 12 person ma)...

Interpretation of human behaviors in video data is essential for natural and intuitive human-computer interfaces. In this context, the estimation of a person’s head pose plays a major role, since heads and faces are continuously used in interaction between people. In this work we present a method for estimating a person’s head pose with a stereo camera. Our approach focuses on the application o...

A new method to study the tuning of orientation detectors in the human visual system is proposed. The stimulus consists of a sequence of flashed sinusoidal gratings of random orientations and spatial phases shown at a fast presentation rate. The subject's task is to report, as fast as possible, when the presence of a particular orientation (horizontal, vertical, or oblique) is seen in the stimu...

A key emergent property of the primary visual cortex (V1) is the orientation selectivity of its neurons. Recent experiments demonstrate remarkable bottom-up and top-down plasticity in orientation networks of the adult cortex. The basis for such dynamics is the mechanism by which orientation tuning is created and maintained, by integration of thalamocortical and intracortical inputs. Intracellul...