As we receive 80 % of information visually, we can say that the age of visual communications in which we live belongs to signs. In this essay we do not observe signs individually, but as a part of organized Information and Communication systems [1]. High mobility of population nowadays more than ever involves the awareness of signs and their meanings, whether they are related to traffic, orient...

insulinoma is an insulin-producing tumor that leads to hypoglycemia. the signs and symptoms of this disease include confusion, headache, disorientation, visual disturbances, abnormal behaviors and coma. in this article, we report a case of insulinoma presented with increased frequency of pervious tonic clonic seizures from 2 weeks before admission.

the visual form of writing has not only meaning apart from the content of writing but also different language from the language of writing. based on this claim, graphologists believe that it is possible to recognize writers’ thought through their handwriting. in fact, graphologists constituted some principles for analyzing handwriting as well as semiotic system for interpreting the visual diver...

Traffic signs are important visual guiding signals for the safe navigation through complex road traffic. Interestingly, there is little variation in the traffic signs for cars around the world. However, remarkable variation exists for pedestrian traffic signs. Following up from an earlier study, we investigated the visual efficacy of female vs. male German Ampelmännchen pedestrian traffic signs...

schizophrenia and various neurological disorders have some signs and symptoms. visual hallucinations are one of such disorders. the related studies in some diseases for example parkinson disease and lewy body dementia indicate that acetylcholine (ach) plays a significant role in neuropsychiatric manifestation and its association with visual hallucination; therefore, visual hallucinations occur ...

Traffic signs are designed to be clearly seen by drivers. However a little is known about the visual influence of the traffic sign environment on how it will be perceived. Computer estimation of the conspicuity from images using a camera mounted on a vehicle is thus of importance in order to be able to quickly make a diagnosis regarding conspicuity of traffic signs. Unfortunately, our knowledge...

The highly task-specific fixation patterns revealed in performance of natural tasks demonstrate the fundamentally active nature of vision, and suggest that in many situations, top-down processes may be a major factor in the acquisition of visual information. Understanding how a top-down visual system could function requires understanding the mechanisms that control the initiation of the differe...