Higher Visual Functions in the Upper and Lower Visual Fields: a pilot study in healthy subjects

Zito, Giuseppe Angelo; Müri, René Martin; Mosimann, Urs Peter; Nyffeler, Thomas; Nef, Tobias (29 August 2015). Higher Visual Functions in the Upper and Lower Visual Fields: a pilot study in healthy subjects. In: IEEE EMBC 2015. IEEE

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Visual perception is not identical in the upper and lower visual hemifields. The mechanisms behind this difference can be found at the retinal, cortical, or higher attentional level. In this study, a new visual test battery, that involves real-time comparisons of complex visual stimuli, such as shape of objects, and speed of moving dot patterns, in the upper and lower visual hemifields, is presented. This study represents, to our knowledge, the first to implement such a visual test battery in an immersive environment composed of a hemisphere, in order to present visual stimuli in precise regions of the visual field. Ten healthy volunteers were tested in this pilot study. The results showed a higher accuracy in the image matching when the visual test was performed in the lower visual hemifield.

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