The Brain Sensory Input Of Different Modalities Essay

The brain processes sensory input of different modalities simultaneously in cortical areas. Sensory information of different modalities is either processed independently before being integrated to provide an overall picture of our surroundings, or cross-modal interaction occurs before integration. We compared visual evoked potentials (VEPs) evoked when attention is directed toward either visual or auditory stimuli and found no difference in mean P100 when attention was directed toward visual stimuli (2.41x10-5  ± 6.43x10-5 V, n=10) or auditory stimuli (1.68x10-5  ± 1.93x10-5 V, n=10). This evidence suggests that processing of visual information is unaffected by the concurrent processing of auditory information. Introduction The human brain receives input containing sensory information of different modalities from the surrounding environment. This information is processed in different areas of the brain that do not function in isolation and exhibit interactive plasticity (Roe et al., 1990). The processed information evokes activity in different cortical areas responsible for processing senses and is integrated to give coherent, detailed information (Molholm et al., 2002). Increasing attention to visual stimuli results in a stronger response at the neuronal level (Reynolds Chelazzi, 2004). The capability to retain working memory of a visual stimulus is enhanced when attention is fully focused on the stimulus compared to when objects in the periphery of focus act asShow MoreRelatedThe Neural Basis Of Conceptual Knowledge1113 Words   |  5 PagesBackground: Although decades of neuroscience research has shed light on how the brain represents different types of information, far less is known about the neural basis of conceptual knowledge. 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