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Structural properties of corpus callosum are associated differently with verbal creativity and visual creativity. Brain Struct Funct 2021; 226:2511-2521. [PMID: 34430997 DOI: 10.1007/s00429-021-02329-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 06/24/2021] [Indexed: 10/20/2022]
Abstract
Recent neuroimaging studies demonstrate that creativity is related to brain regions across both hemispheres, and the corpus callosum forms the structural basis of inter-hemispheric information exchange. However, the findings regarding the relationship between inter-hemispheric interaction and creativity remain inconsistent, which may be caused by different types of creativity and neural features being adopted. To clarify the inconsistency, and understand how inter-hemispheric interactions are related to different kinds of creativity, we explored the correlation between eight structural measures of the corpus callosum (CC) and two different domains of creativity [verbal creativity (VerC) and visual creativity (VisC)] using a large healthy-adult sample (n = 446). The results showed that VerC was positively correlated with fractional anisotropy (FA) and negatively correlated with the radial diffusivity (RD) of CC; whereas there was no significant association between VisC and CC measures. These results persisted after regressing VisC from VerC, regressing VerC from VisC, and regress out general intelligence from both creativity measures. In summary, we showed that the structural properties of corpus collosum are associated in different ways with two domains of creativity, i.e., verbal creativity and visual creativity, which enriches our understanding of the underlying neural mechanism in different types of creativity.
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Joue G, Boven L, Willmes K, Evola V, Demenescu LR, Hassemer J, Mittelberg I, Mathiak K, Schneider F, Habel U. Metaphor processing is supramodal semantic processing: The role of the bilateral lateral temporal regions in multimodal communication. BRAIN AND LANGUAGE 2020; 205:104772. [PMID: 32126372 DOI: 10.1016/j.bandl.2020.104772] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 01/26/2020] [Accepted: 02/09/2020] [Indexed: 06/10/2023]
Abstract
This paper presents an fMRI study on healthy adult understanding of metaphors in multimodal communication. We investigated metaphors expressed either only in coverbal gestures ("monomodal metaphors") or in speech with accompanying gestures ("multimodal metaphors"). Monomodal metaphoric gestures convey metaphoric information not expressed in the accompanying speech (e.g. saying the non-metaphoric utterance, "She felt bad" while dropping down the hand with palm facing up; here, the gesture alone indicates metaphoricity), whereas coverbal gestures in multimodal metaphors indicate metaphoricity redundant to the speech (e.g. saying the metaphoric utterance, "Her spirits fell" while dropping the hand with palm facing up). In other words, in monomodal metaphors, gestures add information not spoken, whereas the gestures in multimodal metaphors can be redundant to the spoken content. Understanding and integrating the information in each modality, here spoken and visual, is important in multimodal communication, but most prior studies have only considered multimodal metaphors where the gesture is redundant to what is spoken. Our participants watched audiovisual clips of an actor speaking while gesturing. We found that abstract metaphor comprehension recruited the lateral superior/middle temporal cortices, regardless of the modality in which the conceptual metaphor is expressed. These results suggest that abstract metaphors, regardless of modality, involve resources implicated in general semantic processing and are consistent with the role of these areas in supramodal semantic processing as well as the theory of embodied cognition.
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Affiliation(s)
- Gina Joue
- Human Technology Center, RWTH Aachen University, Theaterplatz 14, 52056 Aachen, Germany; Department of Psychiatry, Psychotherapy and Psychosomatics, School of Medicine, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany; Department of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, 20246 Hamburg, Germany.
| | - Linda Boven
- School of Medicine, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Klaus Willmes
- Section Neuropsychology, Department of Neurology, School of Medicine, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Vito Evola
- Human Technology Center, RWTH Aachen University, Theaterplatz 14, 52056 Aachen, Germany; Bonn-Aachen International Center for Information Technology, Dahlmannstraße 2, 53113 Bonn, Germany; Faculty of Social Sciences and Humanities, New University of Lisbon, Portugal
| | - Liliana R Demenescu
- Department of Psychiatry, Psychotherapy and Psychosomatics, School of Medicine, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Julius Hassemer
- Human Technology Center, RWTH Aachen University, Theaterplatz 14, 52056 Aachen, Germany
| | - Irene Mittelberg
- Human Technology Center, RWTH Aachen University, Theaterplatz 14, 52056 Aachen, Germany
| | - Klaus Mathiak
- Department of Psychiatry, Psychotherapy and Psychosomatics, School of Medicine, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany; JARA, Translational Brain Medicine, 52425 Jülich, Germany; Institute of Neuroscience and Medicine (INM-1), Research Center Jülich, 52425 Jülich, Germany
| | - Frank Schneider
- Department of Psychiatry, Psychotherapy and Psychosomatics, School of Medicine, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
| | - Ute Habel
- Department of Psychiatry, Psychotherapy and Psychosomatics, School of Medicine, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
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Elucidating the role of selective attention, divergent thinking, language abilities, and executive functions in metaphor generation. Neuropsychologia 2020; 142:107458. [PMID: 32275968 DOI: 10.1016/j.neuropsychologia.2020.107458] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 03/29/2020] [Accepted: 03/30/2020] [Indexed: 11/20/2022]
Abstract
Metaphoric language is one of the most common expressions of creative cognition in everyday life. However, the cognitive mechanisms underlying metaphor generation remain largely unexplained. In this study, we aimed to investigate the relationship between various cognitive functions and both novel and conventional metaphor generation. Ninety-five undergraduate students were administered a metaphor generation task that assesses novel and conventional metaphor generation, along with a battery of different cognitive measures: vocabulary; divergent thinking (Tel Aviv Creativity Test), working memory (WM) via digit span tests, executive functions (EFs) using the Behavioral Rating Inventory of Executive Function (BRIEF) questionnaire, and selective attention (lateralized global-local digit task). Results of a path analysis indicated that - whereas only selective attention contributed to conventional metaphor generation - selective attention, divergent thinking, and EFs contributed to novel metaphor generation beyond vocabulary and WM. Thus, the results indicate that although both novel and conventional metaphor generation are linked to attentional resources and inhibitory control, the greater creativity inherent in novel metaphor generation appears to reflect a more complex set of cognitive processes than conventional metaphor generation.
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Chouinard B, Volden J, Hollinger J, Cummine J. Spoken metaphor comprehension: Evaluation using the metaphor interference effect. DISCOURSE PROCESSES 2018. [DOI: 10.1080/0163853x.2018.1455166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Brea Chouinard
- Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, Alberta, Canada
- Trinity College Institute of Neuroscience, Trinity College Dublin, Dublin 2, Ireland
| | - Joanne Volden
- Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, Alberta, Canada
- Department of Communication Sciences and Disorders, University of Alberta, Edmonton, Alberta, Canada
| | - John Hollinger
- Department of Communication Sciences and Disorders, University of Alberta, Edmonton, Alberta, Canada
| | - Jacqueline Cummine
- Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, Alberta, Canada
- Department of Communication Sciences and Disorders, University of Alberta, Edmonton, Alberta, Canada
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, Alberta, Canada
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Are subjective ratings of metaphors a red herring? The big two dimensions of metaphoric sentences. Behav Res Methods 2017; 50:759-772. [DOI: 10.3758/s13428-017-0903-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Monaghan P, Shaw JJ, Ashworth-Lord A, Newbury CR. Hemispheric processing of memory is affected by sleep. BRAIN AND LANGUAGE 2017; 167:36-43. [PMID: 27221468 DOI: 10.1016/j.bandl.2016.05.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Revised: 03/22/2016] [Accepted: 05/03/2016] [Indexed: 06/05/2023]
Abstract
Sleep is known to affect learning and memory, but the extent to which it influences behavioural processing in the left and right hemispheres of the brain is as yet unknown. We tested two hypotheses about lateralised effects of sleep on recognition memory for words: whether sleep reactivated recent experiences of words promoting access to the long-term store in the left hemisphere (LH), and whether sleep enhanced spreading activation differentially in semantic networks in the hemispheres. In Experiment 1, participants viewed lists of semantically related words, then slept or stayed awake for 12h before being tested on seen, unseen but related, or unrelated words presented to the left or the right hemisphere. Sleep was found to promote word recognition in the LH, and to spread activation equally within semantic networks in both hemispheres. Experiment 2 ensured that the results were not due to time of day effects influencing cognitive performance.
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de Almeida RG, Riven L, Manouilidou C, Lungu O, Dwivedi VD, Jarema G, Gillon B. The Neuronal Correlates of Indeterminate Sentence Comprehension: An fMRI Study. Front Hum Neurosci 2016; 10:614. [PMID: 28066204 PMCID: PMC5168646 DOI: 10.3389/fnhum.2016.00614] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 11/17/2016] [Indexed: 12/01/2022] Open
Abstract
Sentences such as The author started the book are indeterminate because they do not make explicit what the subject (the author) started doing with the object (the book). In principle, indeterminate sentences allow for an infinite number of interpretations. One theory, however, assumes that these sentences are resolved by semanticcoercion, a linguistic process that forces the noun book to be interpreted as an activity (e.g., writing the book) or by a process that interpolates this activity information in the resulting enriched semantic composition. An alternative theory, pragmatic, assumes classical semantic composition, whereby meaning arises from the denotation of words and how they are combined syntactically, with enrichment obtained via pragmatic inferences beyond linguistic-semantic processes. Cognitive neuroscience studies investigating the neuroanatomical and functional correlates of indeterminate sentences have shown activations either at the ventromedial pre-frontal cortex (vmPFC) or at the left inferior frontal gyrus (L-IFG). These studies have supported the semantic coercion theory assuming that one of these regions is where enriched semantic composition takes place. Employing functional magnetic resonance imaging (fMRI), we found that indeterminate sentences activate bilaterally the superior temporal gyrus (STG), the right inferior frontal gyrus (R-IFG), and the anterior cingulate cortex (ACC), more so than control sentences (The author wrote the book). Activation of indeterminate sentences exceeded that of anomalous sentences (…drank the book) and engaged more left- and right-hemisphere areas than other sentence types. We suggest that the widespread activations for indeterminate sentences represent the deployment of pragmatic-inferential processes, which seek to enrich sentence content without necessarily resorting to semantic coercion.
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Affiliation(s)
| | - Levi Riven
- Department of Psychology, Concordia University Montreal, QC, Canada
| | - Christina Manouilidou
- Department of Comparative and General Linguistics, University of Ljubljana Ljubljana, Slovenia
| | - Ovidiu Lungu
- Unité de Neuroimagerie Fonctionnelle, Institute Universitaire de Gériatrie de Montréal, Université de Montréal Montreal, QC, Canada
| | - Veena D Dwivedi
- Department of Applied Linguistics, Brock University St. Catharines, ON, Canada
| | - Gonia Jarema
- Centre de Recherche, Institut Universitaire de Gériatrie de Montréal, Université de Montréal Montreal, QC, Canada
| | - Brendan Gillon
- Department of Linguistics, McGill University Montreal, QC, Canada
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Hemispheric involvement in the processing of Chinese idioms: An fMRI study. Neuropsychologia 2016; 87:12-24. [DOI: 10.1016/j.neuropsychologia.2016.04.029] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Revised: 02/25/2016] [Accepted: 04/29/2016] [Indexed: 11/21/2022]
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Thompson HE, Henshall L, Jefferies E. The role of the right hemisphere in semantic control: A case-series comparison of right and left hemisphere stroke. Neuropsychologia 2016; 85:44-61. [PMID: 26945505 PMCID: PMC4863527 DOI: 10.1016/j.neuropsychologia.2016.02.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2015] [Revised: 02/28/2016] [Accepted: 02/29/2016] [Indexed: 11/30/2022]
Abstract
Semantic control processes guide conceptual retrieval so that we are able to focus on non-dominant associations and features when these are required for the task or context, yet the neural basis of semantic control is not fully understood. Neuroimaging studies have emphasised the role of left inferior frontal gyrus (IFG) in controlled retrieval, while neuropsychological investigations of semantic control deficits have almost exclusively focussed on patients with left-sided damage (e.g., patients with semantic aphasia, SA). Nevertheless, activation in fMRI during demanding semantic tasks typically extends to right IFG. To investigate the role of the right hemisphere (RH) in semantic control, we compared nine RH stroke patients with 21 left-hemisphere SA patients, 11 mild SA cases and 12 healthy, aged-matched controls on semantic and executive tasks, plus experimental tasks that manipulated semantic control in paradigms particularly sensitive to RH damage. RH patients had executive deficits to parallel SA patients but they performed well on standard semantic tests. Nevertheless, multimodal semantic control deficits were found in experimental tasks involving facial emotions and the 'summation' of meaning across multiple items. On these tasks, RH patients showed effects similar to those in SA cases - multimodal deficits that were sensitive to distractor strength and cues and miscues, plus increasingly poor performance in cyclical matching tasks which repeatedly probed the same set of concepts. Thus, despite striking differences in single-item comprehension, evidence presented here suggests semantic control is bilateral, and disruption of this component of semantic cognition can be seen following damage to either hemisphere.
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Affiliation(s)
- Hannah E Thompson
- Department of Psychology and York Neuroimaging Centre, University of York, UK.
| | - Lauren Henshall
- Department of Psychology and York Neuroimaging Centre, University of York, UK
| | - Elizabeth Jefferies
- Department of Psychology and York Neuroimaging Centre, University of York, UK
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Baldo JV, Kacinik NA, Moncrief A, Beghin F, Dronkers NF. You may now kiss the bride: Interpretation of social situations by individuals with right or left hemisphere injury. Neuropsychologia 2015; 80:133-141. [PMID: 26546561 DOI: 10.1016/j.neuropsychologia.2015.11.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Revised: 09/14/2015] [Accepted: 11/03/2015] [Indexed: 10/22/2022]
Abstract
While left hemisphere damage (LHD) has been clearly shown to cause a range of language impairments, patients with right hemisphere damage (RHD) also exhibit communication deficits, such as difficulties processing prosody, discourse, and social contexts. In the current study, individuals with RHD and LHD were directly compared on their ability to interpret what a character in a cartoon might be saying or thinking, in order to better understand the relative role of the right and left hemisphere in social communication. The cartoon stimuli were manipulated so as to elicit more or less formulaic responses (e.g., a scene of a couple being married by a priest vs. a scene of two people talking, respectively). Participants' responses were scored by blind raters on how appropriately they captured the gist of the social situation, as well as how formulaic and typical their responses were. Results showed that RHD individuals' responses were rated as significantly less appropriate than controls and were also significantly less typical than controls and individuals with LHD. Individuals with RHD produced a numerically lower proportion of formulaic expressions than controls, but this difference was only a trend. Counter to prediction, the pattern of performance across participant groups was not affected by how constrained/formulaic the social situation was. The current findings expand our understanding of the roles that the right and left hemispheres play in social processing and communication and have implications for the potential treatment of social communication deficits in individuals with RHD.
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Affiliation(s)
- Juliana V Baldo
- Department of Veterans Affairs, Northern California Health Care System, 150 Muir Rd. (126R), Martinez, CA 94553, United States.
| | - Natalie A Kacinik
- Brooklyn College and Graduate Center of the City University of New York
| | - Amber Moncrief
- Department of Veterans Affairs, Northern California Health Care System, 150 Muir Rd. (126R), Martinez, CA 94553, United States
| | - Francesca Beghin
- Department of Veterans Affairs, Northern California Health Care System, 150 Muir Rd. (126R), Martinez, CA 94553, United States
| | - Nina F Dronkers
- Department of Veterans Affairs, Northern California Health Care System, 150 Muir Rd. (126R), Martinez, CA 94553, United States; University of California, Davis, United States
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Gibson L, Atchley RA, Voyer D, Diener US, Gregersen S. Detection of sarcastic speech: The role of the right hemisphere in ambiguity resolution. Laterality 2015; 21:549-567. [DOI: 10.1080/1357650x.2015.1105246] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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Obert A, Gierski F, Calmus A, Portefaix C, Declercq C, Pierot L, Caillies S. Differential bilateral involvement of the parietal gyrus during predicative metaphor processing: an auditory fMRI study. BRAIN AND LANGUAGE 2014; 137:112-119. [PMID: 25193417 DOI: 10.1016/j.bandl.2014.08.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2014] [Revised: 07/24/2014] [Accepted: 08/01/2014] [Indexed: 06/03/2023]
Abstract
Despite the growing literature on figurative language processing, there is still debate as to which cognitive processes and neural bases are involved. Furthermore, most studies have focused on nominal metaphor processing without any context, and very few have used auditory presentation. We therefore investigated the neural bases of the comprehension of predicative metaphors presented in a brief context, in an auditory, ecological way. The comprehension of their literal counterparts served as a control condition. We also investigated the link between working memory and verbal skills and regional activation. Comparisons of metaphorical and literal conditions revealed bilateral activation of parietal areas including the left angular (lAG) and right inferior parietal gyri (rIPG) and right precuneus. Only verbal skills were associated with lAG (but not rIPG) activation. These results indicated that predicative metaphor comprehension share common activations with other metaphors. Furthermore, individual verbal skills could have an impact on figurative language processing.
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Affiliation(s)
- Alexandre Obert
- C2S Laboratory (EA6291), University of Reims Champagne-Ardenne, Reims, France.
| | - Fabien Gierski
- C2S Laboratory (EA6291), University of Reims Champagne-Ardenne, Reims, France; Adult Psychiatry Department, Robert Debré Hospital, Reims University Hospital, Reims, France
| | - Arnaud Calmus
- C2S Laboratory (EA6291), University of Reims Champagne-Ardenne, Reims, France; Department of Physical Medicine and Rehabilitation, Sébastopol Hospital, Reims University Hospital, Reims, France
| | - Christophe Portefaix
- Imaging Department, Maison Blanche Hospital, Reims University Hospital, Reims, France; CReSTIC Laboratory (EA 3804), University of Reims Champagne-Ardenne, Reims, France
| | - Christelle Declercq
- C2S Laboratory (EA6291), University of Reims Champagne-Ardenne, Reims, France
| | - Laurent Pierot
- Imaging Department, Maison Blanche Hospital, Reims University Hospital, Reims, France
| | - Stéphanie Caillies
- C2S Laboratory (EA6291), University of Reims Champagne-Ardenne, Reims, France
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Forgács B, Lukács A, Pléh C. Lateralized processing of novel metaphors: disentangling figurativeness and novelty. Neuropsychologia 2014; 56:101-9. [PMID: 24418155 DOI: 10.1016/j.neuropsychologia.2014.01.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2012] [Revised: 10/09/2013] [Accepted: 01/04/2014] [Indexed: 10/25/2022]
Abstract
One of the intriguing and sometimes controversial findings in figurative language research is a right-hemisphere processing advantage for novel metaphors. The current divided visual field study introduced novel literal expressions as a control condition to assess processing novelty independent of figurativeness. Participants evaluated word pairs belonging to one of the five categories: (1) conventional metaphorical, (2) conventional literal, (3) novel metaphorical, (4) novel literal, and (5) unrelated expressions in a semantic decision task. We presented expressions without sentence context and controlled for additional factors including emotional valence, arousal, and imageability that could potentially influence hemispheric processing. We also utilized an eye-tracker to ensure lateralized presentation. We did not find the previously reported right-hemispherical processing advantage for novel metaphors. Processing was faster in the left hemisphere for all types of word pairs, and accuracy was also higher in the right visual field - left hemisphere. Novel metaphors were processed just as fast as novel literal expressions, suggesting that the primary challenge during the comprehension of novel expressions is not a serial processing of salience, but perhaps a more left hemisphere weighted semantic integration. Our results cast doubt on the right-hemisphere theory of metaphors, and raise the possibility that other uncontrolled variables were responsible for previous results. The lateralization of processing of two word expressions seems to be more contingent on the specific task at hand than their figurativeness or saliency.
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Affiliation(s)
- Bálint Forgács
- Budapest University of Technology and Economics (BME), Department of Cognitive Science, Egry József utca 1, T building, V. 506, 1111 Budapest, Hungary; Central European University (CEU), Department of Cognitive Science, Frankel Leó út 30-34, 1023 Budapest, Hungary.
| | - Agnes Lukács
- Budapest University of Technology and Economics (BME), Department of Cognitive Science, Egry József utca 1, T building, V. 506, 1111 Budapest, Hungary.
| | - Csaba Pléh
- Budapest University of Technology and Economics (BME), Department of Cognitive Science, Egry József utca 1, T building, V. 506, 1111 Budapest, Hungary; Eszterházy Károly College, Doctoral School of Education, Eszterházy tér 1, 3300 Eger, Hungary.
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Lai VT, Curran T. ERP evidence for conceptual mappings and comparison processes during the comprehension of conventional and novel metaphors. BRAIN AND LANGUAGE 2013; 127:484-496. [PMID: 24182839 DOI: 10.1016/j.bandl.2013.09.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Revised: 08/24/2013] [Accepted: 09/30/2013] [Indexed: 06/02/2023]
Abstract
Cognitive linguists suggest that understanding metaphors requires activation of conceptual mappings between the involved concepts. We tested whether mappings are indeed in use during metaphor comprehension, and what mapping means as a cognitive process with Event-Related Potentials. Participants read literal, conventional metaphorical, novel metaphorical, and anomalous target sentences preceded by primes with related or unrelated mappings. Experiment 1 used sentence-primes to activate related mappings, and Experiment 2 used simile-primes to induce comparison thinking. In the unprimed conditions of both experiments, metaphors elicited N400s more negative than the literals. In Experiment 1, related sentence-primes reduced the metaphor-literal N400 difference in conventional, but not in novel metaphors. In Experiment 2, related simile-primes reduced the metaphor-literal N400 difference in novel, but not clearly in conventional metaphors. We suggest that mapping as a process occurs in metaphors, and the ways in which it can be facilitated by comparison differ between conventional and novel metaphors.
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Affiliation(s)
- Vicky Tzuyin Lai
- Neurobiology of Language Department, Max Planck Institute for Psycholinguistics, Nijmegen; Department of Psychology, University of South Carolina, Columbia.
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Kaiser NC, Lee GJ, Lu PH, Mather MJ, Shapira J, Jimenez E, Thompson PM, Mendez MF. What dementia reveals about proverb interpretation and its neuroanatomical correlates. Neuropsychologia 2013; 51:1726-33. [PMID: 23747602 DOI: 10.1016/j.neuropsychologia.2013.05.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Revised: 05/10/2013] [Accepted: 05/28/2013] [Indexed: 10/26/2022]
Abstract
OBJECTIVE Neuropsychologists frequently include proverb interpretation as a measure of executive abilities. A concrete interpretation of proverbs, however, may reflect semantic impairments from anterior temporal lobes, rather than executive dysfunction from frontal lobes. The investigation of proverb interpretation among patients with different dementias with varying degrees of temporal and frontal dysfunction may clarify the underlying brain-behavior mechanisms for abstraction from proverbs. We propose that patients with behavioral variant frontotemporal dementia (bvFTD), who are characteristically more impaired on proverb interpretation than those with Alzheimer's disease (AD), are disproportionately impaired because of anterior temporal-mediated semantic deficits. METHODS Eleven patients with bvFTD and 10 with AD completed the Delis-Kaplan Executive Function System (D-KEFS) Proverbs Test and a series of neuropsychological measures of executive and semantic functions. The analysis included both raw and age-adjusted normed data for multiple choice responses on the D-KEFS Proverbs Test using independent samples t-tests. Tensor-based morphometry (TBM) applied to 3D T1-weighted MRI scans mapped the association between regional brain volume and proverb performance. Computations of mean Jacobian values within select regions of interest provided a numeric summary of regional volume, and voxel-wise regression yielded 3D statistical maps of the association between tissue volume and proverb scores. RESULTS The patients with bvFTD were significantly worse than those with AD in proverb interpretation. The worse performance of the bvFTD patients involved a greater number of concrete responses to common, familiar proverbs, but not to uncommon, unfamiliar ones. These concrete responses to common proverbs correlated with semantic measures, whereas concrete responses to uncommon proverbs correlated with executive functions. After controlling for dementia diagnosis, TBM analyses indicated significant correlations between impaired proverb interpretation and the anterior temporal lobe region (left>right). CONCLUSIONS Among two dementia groups, those with bvFTD, demonstrated a greater number of concrete responses to common proverbs compared to those with AD, and this performance correlated with semantic deficits and the volume of the left anterior lobe, the hub of semantic knowledge. The findings of this study suggest that common proverb interpretation is greatly influenced by semantic dysfunction and that the use of proverbs for testing executive functions needs to include the interpretation of unfamiliar proverbs.
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Affiliation(s)
- Natalie C Kaiser
- VA Greater Los Angeles Healthcare System, 11301 Wilshire Blvd., Los Angeles, CA 90073, USA.
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17
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Hemispheric asymmetry in interpreting novel literal language: An event-related potential study. Neuropsychologia 2013; 51:907-21. [DOI: 10.1016/j.neuropsychologia.2013.01.018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2012] [Revised: 09/27/2012] [Accepted: 01/07/2013] [Indexed: 11/20/2022]
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18
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Rapp AM, Mutschler DE, Erb M. Where in the brain is nonliteral language? A coordinate-based meta-analysis of functional magnetic resonance imaging studies. Neuroimage 2012; 63:600-10. [PMID: 22759997 DOI: 10.1016/j.neuroimage.2012.06.022] [Citation(s) in RCA: 123] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2011] [Revised: 06/15/2012] [Accepted: 06/18/2012] [Indexed: 12/14/2022] Open
Affiliation(s)
- Alexander M Rapp
- Department of Psychiatry, University of Tuebingen, Calwerstrasse 14, 72076 Tuebingen, Germany.
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Bohrn IC, Altmann U, Jacobs AM. Looking at the brains behind figurative language—A quantitative meta-analysis of neuroimaging studies on metaphor, idiom, and irony processing. Neuropsychologia 2012; 50:2669-83. [DOI: 10.1016/j.neuropsychologia.2012.07.021] [Citation(s) in RCA: 139] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Revised: 05/28/2012] [Accepted: 07/10/2012] [Indexed: 10/28/2022]
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20
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Lu A, Zhang JX. Event-related potential evidence for the early activation of literal meaning during comprehension of conventional lexical metaphors. Neuropsychologia 2012; 50:1730-8. [DOI: 10.1016/j.neuropsychologia.2012.03.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2010] [Revised: 03/19/2012] [Accepted: 03/22/2012] [Indexed: 11/15/2022]
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21
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Holtgraves T. The role of the right hemisphere in speech act comprehension. BRAIN AND LANGUAGE 2012; 121:58-64. [PMID: 22330796 DOI: 10.1016/j.bandl.2012.01.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2011] [Revised: 11/22/2011] [Accepted: 01/14/2012] [Indexed: 05/31/2023]
Abstract
In this research the role of the RH in the comprehension of speech acts (or illocutionary force) was examined. Two split-screen experiments were conducted in which participants made lexical decisions for lateralized targets after reading a brief conversation remark. On one-half of the trials the target word named the speech act performed with the preceding conversation remark; on the remaining trials the target did not name the speech act that the remark performed. In both experiments, lexical decisions were facilitated for targets representing the speech act performed with the prior utterance, but only when the target was presented to the left visual field (and hence initially processed by the RH) and not when presented to the right visual field. This effect occurred at both short (Experiment 1: 250 ms) and long (Experiment 2: 1000 ms) delays. The results demonstrate the critical role played by the RH in conversation processing.
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Affiliation(s)
- Thomas Holtgraves
- Department of Psychological Science, Ball State University, Muncie, IN 47306, United States.
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22
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Chettih S, Durgin FH, Grodner DJ. Mixing metaphors in the cerebral hemispheres: what happens when careers collide? J Exp Psychol Learn Mem Cogn 2011; 38:295-311. [PMID: 22103787 DOI: 10.1037/a0025862] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Are processes of figurative comparison and figurative categorization different? An experiment combining alternative-sense and matched-sense metaphor priming with a divided visual field assessment technique sought to isolate processes of comparison and categorization in the 2 cerebral hemispheres. For target metaphors presented in the right visual field/left cerebral hemisphere (RVF/LH), only matched-sense primes were facilitative. Literal primes and alternative-sense primes had no effect on comprehension time compared to the unprimed baseline. The effects of matched-sense primes were additive with the rated conventionality of the targets. For target metaphors presented to the left visual field/right cerebral hemisphere (LVF/RH), matched-sense primes were again additively facilitative. However, alternative-sense primes, though facilitative overall, seemed to eliminate the preexisting advantages of conventional target metaphor senses in the LVF/RH in favor of metaphoric senses similar to those of the primes. These findings are consistent with tightly controlled categorical coding in the LH and coarse, flexible, context-dependent coding in the RH.
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Affiliation(s)
- Selmaan Chettih
- Department of Psychology, Swarthmore College, 500 College Avenue, Swarthmore, PA 19081, USA
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Sugeno M, Yamanoi T. Spatiotemporal Analysis of Brain Activity During Understanding Honorific Expressions. JOURNAL OF ADVANCED COMPUTATIONAL INTELLIGENCE AND INTELLIGENT INFORMATICS 2011. [DOI: 10.20965/jaciii.2011.p1211] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This paper discusses brain activity during the understanding of sentences from the perspective of Systemic Functional Linguistics. We focus on ideational meaning (propositional meaning in an ordinary sense) and interpersonal meaning (as is typically seen in honorific expressions). The present study is an experimental exploration of the spatiotemporal pathways of neuronal activation. Japanese sentences containing and not containing honorific expressions are compared in electroencephalography experiments. In these experiments, the sentences without honorific expressions have ideationalmeaning, but those with honorific expressions have both ideational and interpersonal meanings. Through the use of the equivalent current dipole source localization method, the spatiotemporal processes of activation of the brain are analyzed. There is a single pathway during the understanding of the sentences without honorific expressions; this pathway is mainly observed in the left hemisphere. On the other hand, there are three pathways in the case of the sentences with honorific expressions, two of which are observed in the right hemisphere. The remaining pathway is the same as the aforementioned single pathway. This fact strongly suggests that the common pathway is concerned with processing ideational meaning. The other two pathways observed during understanding of the sentences with honorific expressions are considered to be related to processing interpersonal meaning.
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[A review of metaphor research]. SHINRIGAKU KENKYU : THE JAPANESE JOURNAL OF PSYCHOLOGY 2011; 82:283-99. [PMID: 21919307 DOI: 10.4992/jjpsy.82.283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The study of the metaphor is interdisciplinary and focuses mostly on three points in cognitive psychology: (a) the cognition of metaphoricity, (b) metaphor comprehension processes, and (c) the reason why one concept is represented by another concept as a metaphor. This article reviews the history of research on the metaphor from these three perspectives. Most recent studies support the following viewpoints. Metaphor comprehension is as quick and automatic as literal comprehension. Metaphor comprehension entails the processes of comparison and abstraction. The reason why one concept is compared with another concept is strongly related with the motivation process of combination between different concepts such as embodied cognition.
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25
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Abstract
The use of nonliteral language in clinical assessment, especially testing the patients' ability to interpret proverbs, has a long tradition in psychiatry. However, its diagnostic sensitivity and specificity in dementias is not yet clear. The aim of this review article is to examine the current evidence on nonliteral/figurative language (proverb, metaphor, metonymy, idiom, irony, sarcasm) comprehension in Alzheimer's disease and related disorders. A comprehensive literature search identified 25 studies (16 proverb, 3 metaphor, 0 metonymy, 5 idiom, 3 sarcasm) on nonliteral language comprehension in dementia. Studies predominantly indicate a deficit. Most studies investigated Alzheimer's dementia. Applied correctly, nonliteral language is a worthwhile diagnostic tool to evaluate language and abstract thinking in dementias. During assessment, familiarity testing (e.g., by asking "are you familiar with the proverb XY") is obligatory. Still, future research is needed in several areas: evidence on decline of nonliteral language over the course of the illness is limited. So far, almost no studies delineated proverb comprehension in high risk populations such as patients with mild cognitive impairment. Currently, there is a lack of studies addressing performance in direct comparison to relevant differential diagnosis like older-age depression, delirium, brain lesion, or other psychiatric conditions.
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26
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Shafi N. Poetry therapy and schizophrenia: Clinical and neurological perspectives. JOURNAL OF POETRY THERAPY 2010. [DOI: 10.1080/08893675.2010.482811] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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27
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Abstract
Metaphors are a fundamental aspect of human cognition. The major neuropsychological hypothesis that metaphoric processing relies primarily on the right hemisphere is not confirmed consistently. We propose ways to advance our understanding of the neuropsychology of metaphor that go beyond simple laterality. Neuropsychological studies need to more carefully control confounding lexical and sentential factors, and consider the role of different parts of speech as they are extended metaphorically. They need to incorporate recent theoretical frameworks such as the career of metaphor theory, and address factors such as novelty. We also advocate the use of new methods such as voxel-based lesion-symptom mapping, which permits precise and formal tests of hypotheses correlating behavior with lesions sites. Finally, we outline a plausible model for the neural basis of metaphor. (JINS, 2009, 16, 1-5.).
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28
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Mashal N, Faust M. Conventionalisation of novel metaphors: A shift in hemispheric asymmetry. Laterality 2009; 14:573-89. [DOI: 10.1080/13576500902734645] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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29
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Schmidt GL, Seger CA. Neural correlates of metaphor processing: the roles of figurativeness, familiarity and difficulty. Brain Cogn 2009; 71:375-86. [PMID: 19586700 DOI: 10.1016/j.bandc.2009.06.001] [Citation(s) in RCA: 106] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2007] [Revised: 05/21/2009] [Accepted: 06/03/2009] [Indexed: 10/20/2022]
Abstract
There is currently much interest in investigating the neural substrates of metaphor processing. In particular, it has been suggested that the right hemisphere plays a special role in the comprehension of figurative (non-literal) language, and in particular metaphors. However, some studies find no evidence of right hemisphere involvement in metaphor comprehension (e.g. [Lee, S. S., & Dapretto, M. (2006). Metaphorical vs. literal word meanings: fMRI evidence against a selective role of the right hemisphere. NeuroImage, 29, 536-544; Rapp, A. M., Leube, D. T., Erb, M., Grodd, W., & Kircher, T. T. J. (2004). Neural correlates of metaphor processing. Cognitive Brain Research, 20, 395-402]). We suggest that lateralization differences between literal and metaphorical language may be due to factors such as differences in familiarity ([Schmidt, G. L., DeBuse, C. J., & Seger, C. A. (2007). Right hemisphere metaphor processing? Characterizing the lateralization of semantic processes. Brain and Language, 100, 127-141]), or difficulty ([Bookheimer, S. (2002). Functional MRI of language: New approaches to understanding the cortical organization of semantic processing. Annual Review of Neuroscience, 25, 151-188; Rapp, A. M., Leube, D. T., Erb, M., Grodd, W., & Kircher, T. T. J. (2004). Neural correlates of metaphor processing. Cognitive Brain Research, 20, 395-402]) in addition to figurativeness. The purpose of this study was to separate the effects of figurativeness, familiarity, and difficulty on the recruitment of neural systems involved in language, in particular right hemisphere mechanisms. This was achieved by comparing neural activation using functional magnetic resonance imaging (fMRI) between four conditions: literal sentences, familiar and easy to understand metaphors, unfamiliar and easy to understand metaphors, and unfamiliar and difficult to understand metaphors. Metaphors recruited the right insula, left temporal pole and right inferior frontal gyrus in comparison with literal sentences. Familiar metaphors recruited the right middle frontal gyrus when contrasted with unfamiliar metaphors. Easy metaphors showed higher activation in the left middle frontal gyrus as compared to difficult metaphors, while difficult metaphors showed selective activation in the left inferior frontal gyrus as compared to easy metaphors. We conclude that the right hemisphere is involved in metaphor processing and that the factors of figurativeness, familiarity and difficulty are important in determining neural recruitment of semantic processing.
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Affiliation(s)
- Gwenda L Schmidt
- Department of Psychology, Colorado State University, Fort Collins, Colorado, USA.
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30
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Abstract
Developmental language disorders are characterized by a maturational trajectory that deviates or lags that of normal children. Given the wide variation in the rate of normal language development, diagnosis and classification of these disorders poses severe problems for the clinician. Our laboratory has been searching for anatomical signatures that could aid the development of a neurobiologically based classification. Quantitative analysis of the magnetic resonance imaging (MRI) brain scans of a series of samples of children and adults with reading and language disorders has identified two clusters with contrasting anatomical and reading profiles. Individuals with small symmetrical brain structures tend to have deficits in multiple domains of written and oral language whereas those with larger asymmetrical structures are more likely to have the isolated phonological deficits seen in adults with compensated dyslexia. Surprisingly, the anatomical risk factors that define these clusters do not form a continuum of increasing severity but deviate in opposite directions from normal. Individuals with moderate brain size and asymmetry typically demonstrate the best overall performance. Further research should determine if phonological impairments in the two clusters are associated with differing genetic and environmental risk factors requiring different types of intervention.
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Affiliation(s)
- Christiana M Leonard
- Department of Neuroscience, McKnight Brain Institute, University of Florida, Health Science Center, Gainesville FL 32610, USA.
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Johns CL, Tooley KM, Traxler MJ. Discourse Impairments Following Right Hemisphere Brain Damage: A Critical Review. LANGUAGE AND LINGUISTICS COMPASS 2008; 2:1038-1062. [PMID: 26085839 PMCID: PMC4467466 DOI: 10.1111/j.1749-818x.2008.00094.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Right hemisphere brain damage (RHD) rarely causes aphasias marked by clear and widespread failures of comprehension or extreme difficulty producing fluent speech. Nonetheless, subtle language comprehension deficits can occur following unilateral RHD. In this article, we review the empirical record on discourse function following right hemisphere damage, as well as relevant work on non-brain damaged individuals that focuses on right hemisphere function. The review is divided into four sections that focus on discourse processing, inferencing, humor, and non-literal language. While the exact role that the right hemisphere plays in language processing, and the exact way that the two cerebral hemispheres coordinate their linguistic processes are still open to debate, our review suggests that the right hemisphere plays a critical role in managing inferred or implied information by maintaining relevant information and/or suppressing irrelevant information. Deficits in one or both of these mechanisms may account for discourse deficits following RHD.
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The basal ganglia circuits, dopamine, and ambiguous word processing: a neurobiological account of priming studies in Parkinson's disease. J Int Neuropsychol Soc 2008; 14:351-64. [PMID: 18419834 DOI: 10.1017/s1355617708080491] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2007] [Revised: 01/13/2008] [Accepted: 01/14/2008] [Indexed: 11/06/2022]
Abstract
Research into the processing of lexical ambiguities has provided a valuable paradigm for investigating the functional architecture of the language processing system in normal and neurologically impaired populations and specifically, how basal ganglia circuits and the neurotransmitter dopamine may act to enhance and/or suppress various meanings relative to the context in which the lexical ambiguity appears. In this review, we develop the hypothesis that an integrated basal ganglia thalamocortical circuit linking the striatum and inferior frontal cortex is involved in the enhancement and suppression of ambiguous word meanings when a lexical ambiguity is presented within a linguistic context. Reference to behavioral, neurophysiological, and neurochemical studies of subcortical function in both healthy populations and people with Parkinson's disease will be used to provide further support for the proposal that the subcortex is integrally involved in ambiguous word processing.
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Abstract
We investigated the neural correlates of idiomatic sentence processing using event-related functional magnetic resonance imaging. Twenty-two healthy subjects were presented with 62 literal sentences and 62 idiomatic sentences, each followed by a picture and were required to judge whether the sentence matched the picture or not. A common network of cortical activity was engaged by both conditions, with the nonliteral task eliciting overall greater activation, both in terms of magnitude and spatial extent. The network that was specifically activated by the nonliteral condition involved the left temporal cortex, the left superior medial frontal gyrus (Brodmann area 9), and the left inferior frontal gyrus (IFG). Activations were also present in the right superior and middle temporal gyri and temporal pole and in the right IFG. In contrast, literal sentences selectively activated the left inferior parietal lobule and the right supramarginal gyrus. An analysis of effective connectivity indicated that the medial prefrontal area significantly increased the connection between frontotemporal areas bilaterally during idiomatic processing. Overall, the present findings indicate a crucial role of the prefrontal cortex in idiom comprehension, which could reflect the selection between alternative sentence meanings.
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Coulson S, Van Petten C. A special role for the right hemisphere in metaphor comprehension? Brain Res 2007; 1146:128-45. [PMID: 17433892 DOI: 10.1016/j.brainres.2007.03.008] [Citation(s) in RCA: 98] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2006] [Revised: 03/03/2007] [Accepted: 03/05/2007] [Indexed: 10/23/2022]
Abstract
It has been suggested that the right hemisphere (RH) has a privileged role in the processing of figurative language, including metaphors, idioms, and verbal humor. Previous experiments using hemifield visual presentation combined with human electrophysiology support the idea that the RH plays a special role in joke comprehension. The current study examines metaphoric language. Event-related potentials (ERPs) were recorded as healthy adults read English sentences that ended predictably (High-cloze Literals), or with a plausible but unexpected word (Low-cloze Literals and Low-cloze Metaphoricals). Sentence final words were presented in either the left or the right visual hemifield. Relative to High-cloze Literals, Low-cloze Literals elicited a larger N400 component after presentation to both the left and the right hemifield. Low-cloze Literals also elicited a larger frontal positivity following the N400, but only with presentation to the right hemifield (left hemisphere). These data suggest both cerebral hemispheres can benefit from supportive sentence context, but may suggest an important role for anterior regions of the left hemisphere in the selection of semantic information in the face of competing alternatives. Relative to Low-cloze Literals, Low-cloze Metaphoricals elicited more negative ERPs during the timeframe of the N400 and afterwards. However, ERP metaphoricity effects were very similar across hemifields, suggesting that the integration of metaphoric meanings was similarly taxing for the two hemispheres, contrary to the predictions of the right hemisphere theory of metaphor.
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Affiliation(s)
- Seana Coulson
- Cognitive Science, University of California, San Diego, Mail Code 0515, 9500 Gilman Drive, La Jolla, CA 92093, USA.
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35
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Rapp AM, Leube DT, Erb M, Grodd W, Kircher TTJ. Laterality in metaphor processing: lack of evidence from functional magnetic resonance imaging for the right hemisphere theory. BRAIN AND LANGUAGE 2007; 100:142-9. [PMID: 16677700 DOI: 10.1016/j.bandl.2006.04.004] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2005] [Revised: 03/22/2006] [Accepted: 04/04/2006] [Indexed: 05/09/2023]
Abstract
We investigated processing of metaphoric sentences using event-related functional magnetic resonance imaging (fMRI). Seventeen healthy subjects (6 female, 11 male) read 60 novel short German sentence pairs with either metaphoric or literal meaning and performed two different tasks: judging the metaphoric content and judging whether the sentence has a positive or negative connotation. Laterality indices for 8 regions of interest were calculated: Inferior frontal gyrus (opercular part and triangular part), superior, middle, and inferior temporal gyrus, precuneus, temporal pole, and hippocampus. A left lateralised network was activated with no significant differences in laterality between the two tasks. The lowest degree of laterality was found in the temporal pole. Other factors than metaphoricity per se might trigger right hemisphere recruitment. Results are discussed in the context of lesion and hemifield studies.
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Affiliation(s)
- Alexander M Rapp
- Department of Psychiatry, University of Tuebingen, Osianderstrasse 24, 72076 Tuebingen, Germany.
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36
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Schmidt GL, DeBuse CJ, Seger CA. Right hemisphere metaphor processing? Characterizing the lateralization of semantic processes. BRAIN AND LANGUAGE 2007; 100:127-41. [PMID: 17292739 DOI: 10.1016/j.bandl.2005.03.002] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2004] [Revised: 01/12/2005] [Accepted: 03/01/2005] [Indexed: 05/13/2023]
Abstract
Previous laterality studies have implicated the right hemisphere in the processing of metaphors, however it is not clear if this result is due to metaphoricity per se or another aspect of semantic processing. Three divided visual field experiments varied metaphorical and literal sentence familiarity. We found a right hemisphere advantage for unfamiliar sentences containing distant semantic relationships, and a left hemisphere advantage for familiar sentences containing close semantic relationships, regardless of whether sentences were metaphorical or literal. This pattern of results is consistent with theories postulating predominantly left hemisphere processing of close semantic relationships and predominantly right hemisphere processing of distant semantic relationships.
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Affiliation(s)
- Gwen L Schmidt
- Department of Psychology, Colorado State University, Fort Collins, CO 80523-1876, USA.
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