An international team of researchers, including scientists from the HSE Centre for Language and Brain, has identified the causes of impairments in expressing grammatical tense in people with aphasia.
National Research University Higher School of EconomicsJan 10 2025 They discovered that individuals with speech disorders struggle with both forming the concept of time and selecting the correct verb tense. However, which of these processes proves more challenging depends on the speaker's language. The findings have been published in the journal Aphasiology.
To investigate the origins of these difficulties, researchers from universities in Russia, Greece, Italy, the US, and Norway conducted an experiment. They hypothesised that tense expression impairments could stem from two distinct processes: encoding and retrieval. During encoding, a speaker forms the concept of time . During retrieval, they select the correct verb form to express that concept.
By comparing the results from these tasks, the researchers could determine whether the primary difficulties arose during encoding or retrieval. Related Stories'These findings are crucial for understanding how aphasia patients lose the ability to express time differently, depending on the characteristics of their language,' explained Olga Buivolova, Research Fellow at the HSE Centre for Language and Brain and one of the study's authors. 'We can now better evaluate which aspects of time pose the greatest challenges for patients and begin developing more tailored therapeutic approaches.
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