Publications by authors named "Graca Morgado"

Introduction: Psychiatric disorders and difficulties in emotional expression represent a major problem in the management of Huntington's Disease (HD). To improve patient follow-up, we propose to investigate the link between emotional expression and psychiatric symptoms, measured by the Problem Behaviors Assessment (PBA) scale. To this aim we developed the first emotional/psychiatric speech corpus, emoHD.

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The prevalent belief that individuals with Huntington's disease exhibit selfish behaviour, disregarding the thoughts, feelings and actions of others, has been challenged by patient organizations and clinical experts. To further investigate this issue and study whether participants with Huntington's disease can pay attention to others, a joint memory task was carried out in patients with Huntington's disease with and without a partner. This study involved 69 participants at an early stage of Huntington's disease and 56 healthy controls from the UK, France and Germany, who participated in the international Repair-HD multicentre study (NCT03119246).

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Article Synopsis
  • Huntington's Disease (HD) is a genetic neurodegenerative disorder affecting cognitive abilities, particularly spatial skills, and the authors aimed to assess these spatial deficits using language as a diagnostic tool.
  • They developed a Spatial Description Model to evaluate patients' descriptions of spatial relations while performing the Cookie Theft Picture task, involving 78 individuals with HD and 25 healthy controls.
  • Results showed that manifest HD patients displayed fewer spatial relations in their speech compared to healthy individuals, suggesting that language can effectively assess spatial disturbances in HD, potentially allowing for remote clinical evaluations.
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Cognitive deficits represent a hallmark of neurodegenerative diseases, but evaluating their progression is complex. Most current evaluations involve lengthy paper-and-pencil tasks which are subject to learning effects dependent on the mode of response (motor or verbal), the countries' language or the examiners. To address these limitations, we hypothesized that applying neuroscience principles may offer a fruitful alternative.

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Article Synopsis
  • The striatum plays a key role in processing time, and patients with Huntington's disease show deficits in time perception and production, particularly in interval timing tasks.
  • A study found that symptomatic Huntington's disease patients struggled with producing time durations between 4 and 10 seconds, while presymptomatic gene carriers performed similarly to healthy controls.
  • Results linked performance to grey matter volume in the amygdala and caudate, confirming the striatum's involvement in both time perception and production, and indicating that a simple temporal production task could help identify early signs of striatal degeneration in Huntington's disease, though its efficacy for presymptomatic detection remains uncertain.
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Background: Caregiver burden is widely recognized in Huntington's disease, but little is known about the factors determining its evolution over time in the absence of longitudinal studies. Our objective was to identify typical patterns of caregiver burden level and evolution using both patients' and caregivers' characteristics over a one-year period to identify potential levers for alleviation.

Methods: We conducted a prospective multicenter longitudinal study in caregiver/patient pairs in Huntington's disease (NCT02876445) between March 2011 and May 2015.

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Background: Efficient cognitive tasks sensitive to longitudinal deterioration in small cohorts of Huntington's disease (HD) patients are lacking in HD research. We thus developed and assessed the digitized arithmetic task (DAT), which combines inner language and executive functions in approximately 4 minutes.

Methods: We assessed the psychometric properties of DAT in three languages, across four European sites, in 77 early-stage HD patients (age: 52 ± 11 years; 27 females), and 57 controls (age: 50 ± 10, 31 females).

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Purpose: Huntington's disease is a rare condition. Patients are commonly treated with antipsychotics and tetrabenazine. The evidence of their effect on disease progression is limited and no comparative study between these drugs has been conducted.

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