Coulson, S., Van Petten, C., Federmeier, K. D., & Kutas, M. (). Right hemisphere sensitivity to word- And sentence-level context: Evidence. First published: 28 February Address reprint requests to: Kara D. Federmeier, Department of Psychology, University of Illinois Urbana Champaign, E. This work was supported by grants HD and AG to Marta Kutas. Memory & Cognition. July , Volume 33, Issue 5, pp – | Cite as Kara D. Federmeier Email author; Heinke Mai; Marta Kutas. Kara D. Federmeier. 1.
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It is possible that such information be-comes more important for memory judgments at long lags, when explicit memory signals are weaker.
In some cases the RH has even seemed insensitive to overt message-level anomalies e. Furthermore, it has been suggested that prediction is likely to be error prone and, again, revision of errors could be resource intensive.
The N as a snapshot of interactive processing: Evidence from the N Author information Copyright and License information Disclaimer.
Abstract Reviewed are studies using event-related potentials to examine when and how sentence context information is used during language comprehension. The age-related changes observed in preactivation during sentence processing thus generalize to very different task circumstances and may therefore reflect something fairly fundamental about how older, as compared with younger, adults make use of language input online. Adult age differences in regional cerebral blood flow during visual world identification: However, such a system tends to lose stimulus-specific information, as context and expectations shape and override input features.
Fractionating the word repetition effect with event-related potentials. Experimental and naturalistic approaches. The impact of semantic memory organization and sentence context information on spoken language processing by younger and older adults: Response times for correct responses confirmed our prediction top half of Figure 6.
This positivity seems to be composed of at least two functionally dissociable effects: Thus, although the overall pattern of results argues against qualitative distinctions in the types of information available to each hemisphere, the data do suggest that, in the LH, higher level processing stages may exert greater influence over lower levels of analysis.
This functional difference in the connectivity of the hemispheres may arise, at least in part, because language comprehension and production share resources only in the LH.
Differential effects of aging on memory for content and context: Under-recruitment and nonselective recruitment: A connectionist model of sentence production. Sentence-acceptability and word-relatedness effects. When processing the less expected low typicality targets, younger — but not older — adults elicited a prefrontal positivity — ms that has been linked to processing consequences of having predictions disconfirmed.
Second, and critically, the pattern of results across conditions demonstrates that the frontal positivity is not a simple index of unexpectedness or mismatch, since it appeared selectively for low typicality exemplars.
The brain is an amazing pattern recognition device, and this is perhaps nowhere more apparent than in the domain of language comprehension. A number of different asymmetries have been uncovered with these methods, leading, in turn, to several proposals about the nature of the underlying processing differences. Open in a separate window. Like younger adults, older adults also show processing advantages for words in congruent sentence contexts Roe et al. A substantial body of literature attests to the impact of context information on word processing.
Thinking ahead: The role and roots of prediction in language comprehension
Time course of semantic activation in the cerebral hemispheres. They found larger Nlike responses to indefinite articles that mismatched the expected upcoming noun e. Linguistic processes in the two cerebral hemispheres: However, various sources of evidence suggest that callosal transfer is incomplete and results in a loss of information fidelity.
Harvard University Press; Engagement of the right hemisphere during discourse processing. Low typicality targets also elicited a sustained positivity — ms at prefrontal electrode sites filled triangles on head icon; sites include the Midline Prefrontal electrode and Left and Right Medial and Lateral Prefrontal pairs.
However, the observed patterns change depending on the timing of the stimuli i. Obtaining evidence of language comprehension from sentence priming. Journal of Experimental Psychology. Evidence that predictive processing becomes less likely or less efficacious with age can also be seen in the results of an experiment using the stimuli from Federmeier and Kutas b sentence pairs ending with expected exemplars, within-category violations, and between-category violationsin this case presented to younger and older adults as natural speech Federmeier et al.
Response Times Response times voice onsets to antonym and category cues for both younger and older adults are given in Table 2.
Aging in context: age-related changes in context use during language comprehension.
The complete cue phrase was presented in the center of the screen for ms, followed by a variable inter-stimulus interval ISI; a variable interval was used to temporally jitter anticipatory ERP responses of between and ms. VF methods thus provide a powerful tool for studying functional asymmetries in the intact brain. The strength of such a system lies in its efficiency and robustness: Experiment 2 showed that these age-related differences were not due to simple slowing of language production mechanisms, as older adults generated overt responses to the cues as quickly as — and more accurately than — younger adults.
In Experiment 2, we then test the hypothesis that prediction during comprehension is related to language production mechanisms by directly comparing patterns during comprehension with patterns seen when older and younger participants overtly generate responses to the same cues.