Does Judgment Feedback affect Visual-Field Superiority as a function of Stimulus Structure and Content?

Visual-field advantage was envisaged as a function of presentation mode (unilateral, bilateral), stimulus structure (word, face), and stimulus content (emotional, neutral) in two conditions, with and without feedback of judgment. Split visual-field paradigm was taken into account with recognition accuracy and response latency as the dependent variables. Stimuli were significantly better recognized in left visual-field than in right visual-field. Unilaterally, rather than bilaterally, presented stimuli were significantly better recognized. Emotional content were intensely recognized than neutral content. Analysis using multivariate ANOVA suggested that words as well as faces were recognized better without judgment feedback condition as compared to with judgment feedback condition; however these stimuli were judged with significantly less response latency following judgment feedback.

Interhemispheric Integration of Compound Nouns: Effects of Stimulus Arrangement and Mode of Presentation

Normal subjects had to name German compound nouns which were presented tachistoscopically. The compound nouns were displayed either unilaterally to the left or right visual field or bilaterally with one element to each visual field. In the bilateral condition a distinction was made as to whether familiar or unfamiliar arrangement of the elements was used. Representation in print was compared with pictorial representation of the compound nouns. A right visual-field superiority was observed with printed representation, but no laterality effects with pictorial representation. Bilateral processing was superior to unilateral processing. Within the bilateral conditions, the familiar arrangement of the elements yielded a significantly better performance than unfamiliar arrangement. This difference can be explained by reading habits and/or by different styles of interhemispheric integration.