Semantic priming effects for stimuli presented to the right and left visual fields.

Area of Science:

• Cognitive Psychology
• Neuroscience
• Psycholinguistics

Background:

• Hemispheric specialization in language processing is debated.
• Semantic priming effects may differ between brain hemispheres.

Purpose of the Study:

• To investigate hemispheric differences in semantic priming.
• To clarify the role of visual fields in semantic processing.

Main Methods:

• Experiment 1: Hemiretinal presentation with manual responses to word pairs (categorical, syntactic, unrelated, nonword).
• Experiment 2: Verbal responses to homographs with disambiguating flank words, assessing visual field effects.

Main Results:

• No significant visual field differences in priming magnitude (response latency).
• Categorical relatedness improved accuracy for left visual field stimuli, not right.
• Disambiguating flank words influenced homograph interpretation irrespective of visual field.

Conclusions:

• Semantic aspects of linguistic input are processed automatically.
• Semantic priming influences response content and latency in both visual fields.
• Evidence suggests limited hemispheric asymmetry for automatic semantic processing.