Repetitive visual stimulus

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Repetitive Visual Stimulus (RVS) is a visual stimulus that has a distinctive property (e.g., frequency or phase). The stimuli are simultaneously presented to the user when focusing his/her attention on the corresponding stimulus.[1] For example, when the user focuses his/her attention on an RVS, an SSVEP is elicited which manifests as oscilliatory components in the user's EEG, especially in the signals from the primary visual cortex, matching the frequency or harmonics of that RVS.[2] Repetitive visual stimuli (RVS) are said to evoke a lesser response in brain cells, specifically superior collicular cells, than moving stimuli. Habituation is very rapid in normal healthy patients in reference to repetitive visual stimuli. Development changes around the first year of life are attributed for attentional control and these are said to be fully functional around the ages of two and four years old. This is the age that toddlers seem to now prefer moving and changing stimuli, much like healthy adults.[3] In infants, there is evidence that supports the hypothesis that infants prefer repetitive visual stimuli or patterns, in comparison to moving or changing targets.[4]

References[edit]

  1. ^ Zhu, Danhua; Bieger, Jordi, Garcia Molina, Gary, Aarts, Ronald M. (1 January 2010). "A Survey of Stimulation Methods Used in SSVEP-Based BCIs". Computational Intelligence and Neuroscience 2010: 1–12. doi:10.1155/2010/702357. 
  2. ^ Herrmann, Christoph S. (1 April 2001). "Human EEG responses to 1-100 Hz flicker: resonance phenomena in visual cortex and their potential correlation to cognitive phenomena". Experimental Brain Research 137 (3-4): 346–353. doi:10.1007/s002210100682. 
  3. ^ Bohotin, A. Fumal, M Vandenheede, P. Gérard, C. Bohotin, A. Maertens de Noordhout, and J. Schoenen. (2002). Effects of repetitive transcranial magnetic stimulation on visual evoked potentials in migraine. Brain (2002) 125 (4): 912-922. doi:10.1093/brain/awf081
  4. ^ Sirenteanu R, Rettenbach R, Wagner M. (2009). Transient Preferences for Repetitive Visual Simuli in Human Infancy. Vision Research. Volume 49, Issue 19, Pages 2344-2352. http://dx.doi.org/10.1016/j.visres.2008.08.006

ual stimuli or patterns, in comparison to moving or changing targets.