• Publications
  • Influence
Structure and deterioration of semantic memory: a neuropsychological and computational investigation.
TLDR
Wernicke (1900, as cited in G. H. Eggert, 1977) suggested that semantic knowledge arises from the interaction of perceptual representations of objects and words. Expand
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Prototypicality, distinctiveness, and intercorrelation: Analyses of the semantic attributes of living and nonliving concepts
Many cognitive psychological, computational, and neuropsychological approaches to the organisation of semantic memory have incorporated the idea that concepts are, at least partly, represented inExpand
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Generalization and Differentiation in Semantic Memory
According to many theories, semantic representations reflect the parallel activation of information coded across a distributed set of modality‐specific association brain cortices. This view isExpand
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Coherent concepts are computed in the anterior temporal lobes
TLDR
In his Philosophical Investigations, Wittgenstein famously noted that the formation of semantic representations requires more than a simple combination of verbal and nonverbal features to generate conceptually based similarities and differences. Expand
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Age of acquisition effects depend on the mapping between representations and the frequency of occurrence: Empirical and computational evidence
In the last few years, a number of connectionist models have been described that provide an explanation for age-of-acquisition (AoA) effects in verbal and nonverbal tasks. Further simulations and anExpand
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Conceptual knowledge is underpinned by the temporal pole bilaterally: convergent evidence from rTMS.
Conceptual knowledge provides the basis on which we bring meaning to our world. Studies of semantic dementia patients and some functional neuroimaging studies indicate that the anterior temporalExpand
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GOGI APHASIA OR SEMANTIC DEMENTIA? SIMULATING AND ASSESSING POOR VERBAL COMPREHENSION IN A CASE OF PROGRESSIVE FLUENT APHASIA
Many patients with progressive fluent aphasia present with poor verbal comprehension and profound word-finding difficulties in the context of much better picture comprehension and object use. TheExpand
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Neural basis of category-specific semantic deficits for living things: evidence from semantic dementia, HSVE and a neural network model.
Studies of patients with semantic impairments following brain damage offer key insights into the cognitive and neural organization of semantic memory. Especially important in this regard are studiesExpand
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The Neural Organization of Semantic Control: TMS Evidence for a Distributed Network in Left Inferior Frontal and Posterior Middle Temporal Gyrus
Assigning meaning to words, sounds, and objects requires stored conceptual knowledge plus executive mechanisms that shape semantic retrieval according to the task or context. Despite the essentialExpand
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Neurocognitive insights on conceptual knowledge and its breakdown
  • M. L. Lambon Ralph
  • Medicine
  • Philosophical Transactions of the Royal Society B…
  • 19 January 2014
Conceptual knowledge reflects our multi-modal ‘semantic database’. As such, it brings meaning to all verbal and non-verbal stimuli, is the foundation for verbal and non-verbal expression and providesExpand
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