Visual perceptual disturbances in psychiatry range from absence of sensory stimuli to sensory distortion or deception [1]. Although less common than auditory hallucination, the presence of visual perceptual disturbance in patients with mental illness can be distressing [2]. Ascertaining the cause and type of visual perceptual disturbance occurring in symptomatic patients can be difficult to del...

background: the aim of this study was to evaluate the efficacy of arterial blood gases (abgs) in determining the type of intoxication. methods: medical charts of all patients who had referred to the toxicology ward of baharloo hospital between january 2009 and december 2009 were evaluated. after excluding the patients with multi-drug toxicity, data, including age, sex, type of intoxication (the...

background and objective : poor sleep, poor quality of sleep and sleepiness are among the common problems as-sociated with learning, memory and educational performance in children and adolescents. considering the lack of pre-vious literature in this field, especially in the city of yazd, iran, a number of high-school students of the city participat-ed in a study to assess sleep problems and inf...

Molecular target therapy for cancer is characterized by unique adverse effects that are not usually observed with cytotoxic chemotherapy. For example, the anaplastic lymphoma kinase (ALK)-tyrosine kinase inhibitor crizotinib causes characteristic visual disturbances, whereas such effects are rare when another ALK-tyrosine kinase inhibitor, alectinib, is used. To elucidate the mechanism responsi...

Although visual processing impairments are common in schizophrenia, it is not clear to what extent these originate in the eye vs. the brain. This review highlights potential contributions, from the retina and other structures of the eye, tovisual processing impairments in schizophrenia and high-risk states. A second goal is to evaluate the status of retinal abnormalities as biomarkers for schiz...

Frontotemporal dementia (FTD) patients often present with severe behavioural disturbances and concomitant lack of insight. The underlying neural correlates of these disturbances are mostly attributed to prefrontal cortex dysfunction, but are still poorly understood. Objectives The current study explores whether a simple visual magnetic resonance imaging (MRI) rating scale in combination with ...

The physiological effects of insect infestations on forests can be examined through the use of aerial and satellite images. However, in some cases, visual identification is difficult. The goal of this research is to understand the role of cognitive reasoning and visual perception in the analysis of multi-spectral satellite images for forest management. From that knowledge, we will implement geo...