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Supplementary material from "Validated measures of semantic knowledge and semantic control: normative data from young and older adults for more than 300 semantic judgements" ...
Wu, Wei; Hoffman, Paul. - : The Royal Society, 2022
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Supplementary material from "Validated measures of semantic knowledge and semantic control: normative data from young and older adults for more than 300 semantic judgements" ...
Wu, Wei; Hoffman, Paul. - : The Royal Society, 2022
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3
Semantic diversity is best measured with unscaled vectors: Reply to Cevoli, Watkins and Rastle (2020). ...
Hoffman, Paul; Lambon Ralph, Matthew; Rogers, Timothy T. - : Apollo - University of Cambridge Repository, 2021
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4
Stimulus-independent neural coding of event semantics: Evidence from cross-sentence fMRI decoding
In: Neuroimage (2021)
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Semantic diversity is best measured with unscaled vectors: Reply to Cevoli, Watkins and Rastle (2020).
Hoffman, Paul; Lambon Ralph, Matthew; Rogers, Timothy T. - : Springer Science and Business Media LLC, 2021. : Department of Psychiatry, 2021. : Behav Res Methods, 2021
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6
Characterising the effect of semantic and perceptual similarity in episodic memory
Loris, Naspi. - : The University of Edinburgh, 2021
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7
Perceptual and Semantic Representations at Encoding Contribute to True and False Recognition of Objects
In: J Neurosci (2021)
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8
Perceptual and semantic representations at encoding contribute to true and false recognition of objects
Naspi, Loris; Hoffman, Paul; Devereux, Barry. - : Society for Neuroscience, 2021
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9
Coherence and semantic control impairments in stroke aphasia ...
Hoffman, Paul. - : Open Science Framework, 2020
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10
Going off the rails: Impaired coherence in the speech of patients with semantic control deficits
In: Neuropsychologia (2020)
Abstract: The ability to speak coherently, maintaining focus on the topic at hand, is critical for effective communication and is commonly impaired following brain damage. Recent data suggests that executive processes that regulate access to semantic knowledge (i.e., semantic control) are critical for maintaining coherence during speech. To test this hypothesis, we assessed speech coherence in a case-series of stroke patients who exhibited deficits in semantic control. Patients were asked to speak about a series of topics and their responses were analysed using computational linguistic methods to derive measures of their global coherence (the degree to which they spoke about the topic given) and local coherence (the degree to which they maintained a topic from one utterance to the next). Compared with age-matched controls, patients showed severe impairments to global coherence but not to local coherence. Global coherence was strongly correlated with the patients’ performance on tests of semantic control, with greater semantic control deficits associated with poorer ability to maintain global coherence. Other aspects of speech production were also impaired but were not significantly correlated with semantic control deficits. These results suggest that semantic control deficits give rise to speech that is poorly regulated at the macrolinguistic “message” level. The preservation of local coherence in the patients suggests that automatic activation of semantic associations is relatively intact, such that each utterance they produce is connected meaningfully to the next. However, in the absence of control processes to constrain semantic activation, the content of their speech becomes increasingly distant from the original topic of discourse. This study is the first to investigate the impact of semantic control impairments on speech production at the discourse level and suggests that patients with these impairments are likely to have difficulties maintaining coherence in conversation.
Keyword: Article
URL: https://doi.org/10.1016/j.neuropsychologia.2020.107516
http://www.ncbi.nlm.nih.gov/pubmed/32522658
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7534040/
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11
Reductions in prefrontal activation predict off-topic utterances during speech production
Hoffman, Paul. - : Nature Publishing Group UK, 2019
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12
The Ventral Anterior Temporal Lobe has a Necessary Role in Exception Word Reading
Ueno, Taiji; Meteyard, Lotte; Hoffman, Paul. - : Oxford University Press, 2018
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13
An individual differences approach to semantic cognition: Divergent effects of age on representation, retrieval and selection
Hoffman, Paul. - : Nature Publishing Group UK, 2018
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14
Poor coherence in older people's speech is explained by impaired semantic and executive processes
Hoffman, Paul; Loginova, Ekaterina; Russell, Asatta. - : eLife Sciences Publications, Ltd, 2018
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The Roles of Left Versus Right Anterior Temporal Lobes in Semantic Memory: A Neuropsychological Comparison of Postsurgical Temporal Lobe Epilepsy Patients
Rice, Grace E; Caswell, Helen; Moore, Perry. - : Oxford University Press, 2018
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Divergent effects of healthy ageing on semantic knowledge and control: Evidence from novel comparisons with semantically impaired patients
Hoffman, Paul. - : John Wiley and Sons Inc., 2018
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Age-related changes in the neural networks supporting semantic cognition: a meta-analysis of 47 functional neuroimaging studies
Hoffman, Paul; Morcom, Alexa M. - : Elsevier, 2018
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Data-driven classification of patients with primary progressive aphasia.
Nestor, Peter J; Sajjadi, Seyed Ahmad; Patterson, Karalyn. - : eScholarship, University of California, 2017
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Semantic control deficits impair understanding of thematic relationships more than object identity
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Semantic control deficits impair understanding of thematic relationships more than object identity
Thompson, Hannah; Davey, James; Hoffman, Paul. - : Pergamon Press, 2017
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