The relative capabilities of the upper and lower visual hemifields

fMRI reveals greater within- than between-hemifield integration in the human lateral occipital cortex.

Early visual areas within each hemisphere (V1, V2, V3/VP, V4v) contain distinct representations of the upper and lower quadrants of the contralateral hemifield. As receptive field size increases, the retinotopy in higher-tier visual areas becomes progressively less distinct. Using functional magnetic resonance imaging (fMRI) to map the visual fields, we found that an intermediate level visual a...

Multifocal topographic visual evoked potential: improving objective detection of local visual field defects.

PURPOSE To investigate the relationships between the pattern stimulation of different parts of the visual field (up to 25 degrees of eccentricity), the electrode position, and the cortical response to improve objective detection of local visual field defects. METHODS The human visual evoked potential (VEP) was assessed using multifocal pseudorandomly alternated pattern stimuli that were corti...

The relative capabilities of the upper and lower visual

Spatial location in brief, free-viewing face encoding modulates contextual face recognition

The effect of the spatial location of faces in the visual field during brief, free-viewing encoding in subsequent face recognition is not known. This study addressed this question by tagging three groups of faces with cheating, cooperating or neutral behaviours and presenting them for encoding in two visual hemifields (upper vs. lower or left vs. right). Participants then had to indicate if a c...

Investigating the Educational Capabilities of Virtual Reality Technology Based on the Evaluation of Visual Perception Components

Since virtual reality technology is increasingly and widely used in various fields, and in particular education, it is necessary to examine the audience’s perception obtained using this technology in order to study its instructional capabilities. So, the present study aims to investigate the instructional capabilities of the virtual reality system using a comparative analysis of environmental p...