Hemispheric asymmetry and pun comprehension: When cowboys have sore calves  

Oleh:

Coulson, Seana ; Severens, Els

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Brain and Language (Full Text) vol. 100 no. 2 (2007), page 172-187.
Topik: Jokes; Puns; Humor; Laterality; Ambiguity; ERP; N400; HemiWeld presentation; Word play
Fulltext: 100_02_Coulson.pdf (619.83KB)

Isi artikel

Event-related potentials (ERPs) were recorded as healthy participants listened to puns such as “During branding, cowboys have sore calves.” To assess hemispheric diVerences in pun comprehension, visually presented probes that were either highly related (COW), moderately related (LEG), or unrelated, were presented in either the left or right visual half Weld (LVF/RVF). The sensitivity of each hemisphere to the diVerent meanings evoked by the pun was assessed by ERP relatedness eVects with presentation to the LVF and the RVF. In Experiment 1, the inter-stimulus interval between the pun and the onset of the visual probe was 0 ms; in Experiment 2, this value was 500ms. In Experiment 1, both highly and moderately related probes elicited similar priming eVects with RVF presentation. Relative to their unrelated counterparts, related probes elicited less negative ERPs in the N400 interval (300–600ms post-onset), and more positive ERPs 600–900ms post-onset, suggesting both meanings of the pun were equally active in the left hemisphere. LVF presentation yielded similar priming eVects (less negative N400 and a larger positivity thereafter) for the highly related probes, but no eVects for moderately related probes. In Experiment 2, similar N400 priming eVects were observed for highly and moderately related probes presented to both visual Welds. Compared to unrelated probes 600–900ms post-onset, related probes elicited a centro-parietal positivity with RVF presentation, but a fronto-polar positivity with LVF presentation. Results suggest that initially, the diVerent meanings evoked by a pun are both active in the left hemisphere, but only the most highly related meaning is active in the right hemisphere. By 500ms, both meanings are active in both hemispheres.

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