Movimento ocular e percepção de cores em adultos surdos, ouvintes e intérpretes de libras

Brazilian deaf people use the Brazilian Sign Language (Libras) to communicate and this is strictly visual, which leads to a formation of new neural possibilities facilitating neuroplastic processes. However, in addition, the interpreters / translators of Libras also make use of the language for professional use. Thus, this study aims to investigate whether deafness and / or frequent use of the Brazilian Sign Language (Libras) are related to a better cognitive performance, taking as an indicator functions of ocular movement and perception of nuclei. This is a cross-sectional, quantitative research with 30 adult volunteers divided into three groups: 10 deaf users of Libras (Age M = 28.8 SD = 2.92), 10 listeners who are not aware of Libras M = 30.2 SD = 3.31) and 10 interpreters of Pounds (Age M = 34 SD = 3.02). The research was submitted to the Research Ethics Committee of the UFPB under the CAAE protocol: 71610617.9.0000.5188. The instruments used were the socio-demographic questionnaire; the Desaturated Lanthony (D15d); the labyrinth test and the test of the seven errors in the device Eye tracker Tobii TX300. Using SPSS software, descriptive analyzes, normality tests and non-parametric tests were performed for data analysis. The results did not show significance for the Color Confusion Index (CCI) (p> 0.05), whereas in the labyrinth test there was significance for the following variables and only between hearing and deaf people: total time (X²=6.678; p=0.035 / U=10.100; p=0.031), amount of saccade (X²=10.170; p=0.006 / U=12.550; p=0.004), amount of fixations (X²= 7.742; p=0.021 / U=10.850; p=0.017), total duration of saccade (X²=7.161; p=0.028 / U=10.500; p=0.023), mean time of fixations (X²=8.225; p=0.016 / U=10.900; p=0.017). In the test of the seven errors, both the image of a boat and an elephant the average time of fixations showed significant evidence, in the boat image it was significant for the deaf and interpreter groups (X² = 6.204; p = 0.045 / U ...