background: classroom behaviors are disturbed in autistic students because of their repetitive, restlessness, and disruptive behaviors. this study aimed to examine the impacts of sitting on a ball, cushion, and/or common chair on classroom behavior of four students with autism spectrum disorder (asd). methods : four children with autism participated in this single-subject study. students’ behav...

introduction: barrel cortex of rats is a part of somatosensory cortex, which receives information from facial whiskers. vibrisectomy by sensory deprivation leads to some changes in the barrel cortex, which have been known as experience dependent plasticity. on the other hand, norepinephrine (ne) and locus coeruleus, which is the main source of ne, influenced response properties of cortical barr...

objective: children with autism have sitting and on-task behavior problems in class. therefore, the effects of three alternative classroom-seating devices such as regular classroom chairs, therapy balls, and air cushions were examined on students’ classroom behavior. material and method: fifteen autistic students participated in this a-b-a-c multiple treatments, semi-experimental study. student...

objectives: down syndrome is the most common chrosomal disorder in which the fine and gross motor skills due to lack of proper sensory experience are disturbed. the role of dexterity in activity of daily living, interaction with environment and independency is quiet crucial in down syndrome. therefore, the aim of this study was to investigate the effects of simultaneous application of superfici...

Background: About 50% of stroke patients suffer from the disorder of consciousness with such adverse effects as sensory deprivation. The provision of a care program consisting of simple and safe stimulations can prevent sensory deprivation and improve the patient’s sensory function. Aim: This study aimed to determine the effect of structured sensory stimulation program on the sensory function o...

organization of various cells lining the olfactory mucosa of puntius ticto (hamilton, 1822) were described by light as well as scanning electron microscopy. the paired olfactory chambers located antero-dorsal to the eyes and communicated outside through anterior and posterior nasal openings. the oval shaped olfactory rosette lied at the bottom of chamber and composed of 18-20 lamellae arranged ...

the cellular organization of the olfactory epithelium of puntius sarana (hamilton, 1822) was explored by means of optical and scanning electron microscopy. the oval shaped olfactory rosette was composed of 26-28 primary lamellae distributed from both sides of the central raphe. the sensory epithelium confined chiefly on the linguiform processes of the lamella and rest of the portion consisted o...

Information processing in the sensory periphery is shaped by natural stimulus statistics. In the periphery, a transmission bottleneck constrains performance; thus efficient coding implies that natural signal components with a predictably wider range should be compressed. In a different regime--when sampling limitations constrain performance--efficient coding implies that more resources should b...