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...

We derive the Brownian bridge asymptotics for a scaled self-avoiding walk conditioned on arriving to a far away point n~a for ~a ∈ (Z, 0, ..., 0), and outline the proof for all other ~a in Zd.

In this paper, we study the asymptotic and transient dynamics of a predator–prey model with square root functional responses random perturbation. Firstly, mean stability matrix is obtained from theory stochastic systems, three indexes (root-mean-square resilience, root-mean-square reactivity amplification envelope) ecosystem response to disturbances are calculated. We find that: (1) no matter w...

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 Sleep disturbance is common and may adversely affect treatment outcome, mental health, and quality of life in heroin-dependent patients. Previous studies have focused upon patients receiving treatment. We conducted a cross-sectional descriptive study to explore the 1-month prevalence of sleep disturbance and its associations with socio-demographic, substance-related characteristics, ...

background: one of the problems at the present age is anxiety, feelings of hopelessness and nihilism among humans that would cause many problems in life so that stress has called new civilization diseases. this issue would be doubled importance of addressing to this subject and find a way for the treatment and prevention of mental health risk. methods: this study was conducted with library meth...

The porphyrias are rare inherited diseases of heme biosynthesis which can involve the central nervous system. The most frequent clinical manifestations are peripheral neuropathy and mental disturbance (1). Recent studies have proposed vasculopathy as a cause of reversible ischemia (2, 3). We report a case of reversible vasospasm in porphyric encephalopathy demonstrated by both magnetic resonanc...

Introduction The relationship between endocrinology and psychiatry has attracted a good deal of attention of health professionals for obvious reasons. Endocrine disorders may some time be accompanied by prominent mental abnormalities. In most of the cases psychiatric abnormalities follows the manifestation of endocrine disorder though occassionally, individuals react in such a way that psychiat...