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||Miércoles 7 de septiembre de 2016
Executive Functions and Eye Fixations in Children with Cochlear ImplantExpone: Maria Fernanda Lara Díaz, Universidad Nacional de Colombia
Autores: María Fernanda Lara Díaz, Silvia Raquel Rodriguez Montoya, Cindy Carolina Rivera, Sandra Milena Araque Jaramillo
Recent findings suggest that hearing loss could affect not only language skills but also some neurocognitive functions (Pisoni et al., 2010). Working memory, processing speed, planning and inhibitory control are abilities altered in children with diagnosed hearing loss in comparison to children who have normal audition. It is well known that perception and speech processing depend on executive functions (Beer, Kronenberger, & Pisoni, 2011).
Participants: 16 children, 6-10 years old, with cochlear implant and their respective controls matched based on age, gender and socioeconomic level
Eye tracker was used in order to analyse ocular movements during the evaluation of the executive functions in a group of children with cochlear implant and their controls.
• BANFE Battery of frontal lobes and executive functions. (Ostrosky & Lozano, 2012).
• CELF 4 Clinical Evaluation of Language Fundamentals 4 screening test. (Semel, E. M., Wiig, E. H., Secord, W., & PsychCorp (2004).
• K-BIT : Kaufman Brief Intelligence (non-verbal) (Kaufman, A. S., Cordero, P. A., Calonge, I., & Kaufman, N. L. ,1997).
• Eye tracker Tobii Tx 300. Ocular movements in executive functions tasks were evaluated in a similar way to the one proposed by BANFE test. Fixation time and fixation percentage were calculated from the beginning of the task to the first fixation, also were calculated the fixations times in each interest area (AOI).
The results of this study are consistent with the assertions of Rothpletz and Sladen (2005), as we also found that children with cochlear implants managed and organized differently the visual input as compensatory strategy. Differences were observed in the pattern of visual fixation and areas of interest in children with cochlear implants. The hypothesis of Sladen, Tharpe, Ashmead, Grantham & Chun (2005) was confirmed by identifying a higher percentage of peripheral attachments on the cochlear implant group compared to the control group.
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