Visual system

Vision in Children with CVI The visual system is a powerful and complex tool for understanding and perceiving the world. It has many aspects and dimensions that change throughout an individual’s lifetime. Therefore, it is unsurprising that there are many stages of vision at which perception can become impaired. Cortical (or cerebral) visual impairment (CVI) refers to any impairment or loss of vision brought about by damage to the brain or the central nervous system, rather than physical…

The intervention strategies the clinician will use to target Amanda’s specific language weakness are narratives and discourse. The client’s teacher main concerns were the areas of expressive language skills as well as limited vocabulary. The clinician will target narratives and discourse to increase the client’s expressive language skills. Research by McCabe and Bliss, supports that children should have the ability to provide with a minimum of two events in a narrative. The clinician can…

1. a) Define Deuteronopia. b) What causes it? c) Why is it more frequent in males than females? d) Contrast the two types of receptor cells in the retina, and describe the retina’s reaction to light. Deuteranopia is when someone is colorblind, which results from the exposure to green light, causing the person to be confused, mixing up the colors as green, red, and yellow. Color blindness is caused by the green sensitive cones. In addition, deuteranopia is caused by a genetic condition where…

persistence of gradually dynamical rivalrous perceptions when stimuli are switched powerfully suggests that binocular rivalry occurs as a consequence of alternate stimulus representations compete within the visual pathway. Binocular rivalry thus affords an opportunity to study how the visual system decides what people see even when both eyes see the almost same thing (23). However, a general, non-selective reduction in affectability during the suppression of a stimulus is not selective to…

literature has demonstrated that exposure to emotionally arousing stimuli can alter the perceptual mechanisms of participants. The present experiments attempted to expand this research to examine cross-modal vision and audition. Emotion Processing in the Visual Modality The mechanisms responsible for emotion processing have been selected over the course of generations as they confer survival advantages. Susskind, Lee, Cusi, Feiman, Grabski, and Anderson (2008)…

included in the process) the process studied was action observation. Through studying the acquired motor skill, dancing, Calvo-Merino et al. sought to discover whether or not the system for action observation is influenced by an individual’s motor experience. Calvo Merino et al. hypothesized that if the individual’s brain system responsible for action observation is specifically tuned to the individual’s…

activities. The World Health Organization 's (WHO 2010) criteria for low vision: Low vision is a best-corrected visual acuity lower than 0.5 logMAR (Snellen 6/18) but equal to or more than 1.3 logMAR (3/60) in the better eye, or visual field corresponding to less than 20 degrees in the better eye. Blindness is defined as a best-corrected visual acuity lower than 1.3 logMAR or a visual field no more than10 degrees in the better eye with best correction. Age-related macular degeneration (AMD) is…

tactile, visual, and written styles. Like me, many people have more than one dominant style. VARK explains that aural learners relate well to spoken material such as…

we are consciously aware of it or not, is a fascinating one; and it is even more fascinating when you take into consideration phenomenon like blindsight. Blindsight, according to Dictionary.com, is “the ability to respond to visual stimuli without having any conscious visual experience; it can occur after some forms of brain damage.” The phenomenon of blindsight has been studied for many years by many different researchers because they have been astounded as to how this is possible. The…

conflicting stimulus (Macknick, et al 2008). Throughout history these illusions have helped neuroscientists to gain a better understanding of how visual perception can be affected the…