Right hemisphere sensitivity to novel metaphoric relations: Application of the signal detection theory

• Published in: Brain and language Vol. 104; no. 2; pp. 103 - 112
• Main Authors: Mashal, N., Faust, M.
• Format: Journal Article
• Language: English
• Published: San Diego, CA Elsevier Inc 01.02.2008; Elsevier
• Subjects: Adult; Analysis of Variance; Anatomical correlates of behavior; Behavioral psychophysiology; Biological and medical sciences; Brain Hemisphere Functions; Cerebral Dominance; Criterion; Figurative Language; Functional Laterality; Fundamental and applied biological sciences. Psychology; Hemispheres; Humans; Israel; Language Processing; Metaphor; Metaphors; Psycholinguistics; Psychological Theory; Psychology. Psychoanalysis. Psychiatry; Psychology. Psychophysiology; Reaction Time; Salience; Semantic Relations; Semantics; Semiotics; Sensitivity; Signal Detection; Signal Detection, Psychological; Visual Stimulation; Israel; Hemispheres; Sensitivity; Metaphors; Criterion; Salience; Signal detection; Human; Semantic relation; Hemispheric specialization; Central nervous system; Cognition; Metaphor; Encephalon; Language; Cerebral hemisphere; Laterality
• ISSN: 0093-934X; 1090-2155
• DOI: 10.1016/j.bandl.2007.02.005

The present study used the signal detection theory to test the hypothesis that the right hemisphere (RH) is more sensitive than the left hemisphere (LH) to the distant semantic relations in novel metaphoric expressions. In two divided visual field experiments, sensitivity ( d′) and criterion ( β) were calculated for responses to different types of word pairs. In the first experiment, subjects were presented with unfamiliar two-word novel metaphoric expressions (“signal”) and unrelated word-pairs (“noise”). In the second experiment, literal expressions (“signal”) and unrelated word pairs (“noise”) were presented. In line with the Coarse Semantic Coding Theory [Beeman, M. (1998). Coarse semantic coding and discourse comprehension. In: M. Beeman & C. Chiarello (Eds.). Right hemisphere language comprehension: Perspectives from cognitive neuroscience. Mahwah, NJ: Erlbaum, pp. 255-284.] as well as with the Graded Salience Hypothesis [Giora, R. (2003). On our mind: Salience, context and figurative language. New York: Oxford University Press.], the findings suggest that the RH is more sensitive than the LH to unfamiliar metaphoric relations. Furthermore, this RH advantage in processing distant semantic relations did not extend to familiar semantic relations.