Validation Study of the ExéSem Battery Designed to Differentiate the Contribution of Executive Functions in Semantic Disorders (ExéSemVal)
This protocol describes a study aimed at evaluating the psychometric properties of the ExéSem battery, developed to differentiate semantic deficits from executive semantic impairments in patients with post-lesional or neurodegenerative anomia. Currently available tools do not allow a straightforward distinction between these deficits, limiting diagnostic accuracy and clinical management. The ExéSem battery was developed through a collaboration between Hospices Civils de Lyon, the University of Mons, and Laval University to address this gap.
The battery includes three main tasks: (1) a dual task combining semantic judgment and semantic matching using identical items, (2) a word-picture matching task, and (3) a rapid naming task. Each task is designed to manipulate the level of executive control required to access semantic representations. This allows the identification of whether performance declines under increased executive demand, thereby distinguishing executive-related semantic impairments.
調査の概要
状態
条件
詳細な説明
This protocol describes a study aimed at evaluating the psychometric properties of the ExéSem battery, developed to differentiate semantic deficits from executive semantic impairments in patients with post-lesional or neurodegenerative anomia. Currently available tools do not allow a straightforward distinction between these deficits, limiting diagnostic accuracy and clinical management. The ExéSem battery was developed through a collaboration between Hospices Civils de Lyon, the University of Mons, and Laval University to address this gap.
The battery includes three main tasks: (1) a dual task combining semantic judgment and semantic matching using identical items, (2) a word-picture matching task, and (3) a rapid naming task. Each task is designed to manipulate the level of executive control required to access semantic representations. This allows the identification of whether performance declines under increased executive demand, thereby distinguishing executive-related semantic impairments.
The primary objective is to assess the sensitivity of the ExéSem battery by comparing performances between participants with neurocognitive disorders (mild or major) and cognitively healthy controls. Secondary objectives include evaluating specificity, concurrent validity through comparison with established neuropsychological tests (BECLA, Trail Making Test, Stroop), and the influence of demographic variables (age, sex, education level).
This is a prospective, experimental, comparative, single-center study, classified as a non-interventional study involving human participants (RIPH3). Two populations will be included: cognitively healthy individuals and patients diagnosed with Alzheimer's disease, vascular neurocognitive disorder, or semantic variant primary progressive aphasia. Participants will be aged 50 to 90 years, native French speakers, affiliated with a social security system, and informed with non-opposition collected.
The primary endpoint is the total score on the ExéSem battery (maximum score: 172). Secondary endpoints include sub-scores for each task (semantic judgment and matching, word-picture matching, rapid naming), as well as performance on reference tests to assess convergent validity. The effects of age, sex, and education level, as well as task completion times, will also be analyzed.
A single study visit is planned. After receiving information and a reflection period, participants will complete demographic questionnaires and undergo cognitive assessments, including screening tests (MoCA, DTLA for controls), reference tests (Trail Making Test, Stroop, BECLA), and the ExéSem battery. The total duration of testing is approximately 80 minutes, including 30 minutes for ExéSem.
Risks are minimal and mainly related to cognitive fatigue. Participants with abnormal screening results will be referred for further clinical evaluation outside the study. This research aims to improve diagnostic accuracy in semantic disorders and to better guide cognitive rehabilitation strategies.
- Alzheimer's disease
- Vascular neurocognitive disorder
- Progressive Primary Aphasia semantic variant
- People without neurocognitive disorder
研究の種類
入学 (推定)
連絡先と場所
研究場所
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Lyon、フランス、69100
- Hopital des CHARPENNES ( Hospices Civils de Lyon)
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コンタクト：
- Floriane DELPHIN-COMBE, MD
- 電話番号：+33 472433135
- メール：Floriane.delphin-combe@chu-lyon.fr
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参加基準
適格基準
就学可能な年齢
- 大人
- 高齢者
健康ボランティアの受け入れ
サンプリング方法
調査対象母集団
The study population includes two groups aged 50 to 90 years: cognitively healthy participants and patients with mild to moderate neurocognitive disorders (MMSE ≥20/30), including Alzheimer's disease, vascular neurocognitive disorder, or semantic variant primary progressive aphasia.
Healthy participants are recruited on a voluntary basis through flyers displayed in the Charpennes Hospital and distributed by speech therapy and neuropsychology students. Interested individuals contact the Clinical Research Center (CRC), where they receive initial information during a phone call and are provided with the study information sheet before scheduling an inclusion visit.
Patients with neurocognitive disorders are recruited during routine clinical care (consultation or day hospital assessment).
説明
Inclusion Criteria:
- - Participants without cognitive impairment
- Participant aged 50 to 90 years (inclusive);
- Participant whose native language is French
- Participant affiliated with or entitled to a social security scheme;
- Participants who have been informed and have not objected.
- Participants with cognitive impairment
- Participant aged 50 to 90 years (inclusive);
- Participant whose native language is French
- Participant receiving memory care with a diagnosis of Alzheimer's disease, at the stage of minor or major neurocognitive impairment, according to the 2011 NIA-AA criteria (McKahn et al., 2011), or with a diagnosis of vascular neurocognitive impairment according to the VasCog-2-WSO diagnostic criteria (Sachdev et al., 2025), or with a diagnosis of primary progressive aphasia with semantic variant (Gorno-Tempini et al., 2011).
- Mini-Mental State Examination (MMSE) score ≥ 20/30, within the 6 months preceding enrollment;
- Participants affiliated with or entitled to a social security scheme;
- Participants who have been informed and have not objected.
Exclusion Criteria:
- - For all participants:
- Severe, progressive, or unstable medical conditions that may interfere with assessment variables (epilepsy, acute psychiatric or psychotic disorders, visual hallucinations, acute infection);
- Substance use that may affect cognitive performance;
- Deafness or blindness that may compromise the participant's assessment or participation in tasks and scales;
- Participants under guardianship, curatorship, or legal protection;
- Pregnant, postpartum, or breastfeeding women.
- Specifically for participants without cognitive impairment:
- Participants previously diagnosed with cognitive impairment.
- Specifically for participants with cognitive impairment:
- Severe behavioral and psychological symptoms that prevent task completion, as determined by the investigator.
研究計画
研究はどのように設計されていますか？
デザインの詳細
コホートと介入
グループ/コホート |
介入・治療 |
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Participants without cognitive impairment
Participanst with a MoCA score greater than or equal to 26/30 and a score greater than the alert threshold based on age and education level on the DTLA scale. Participants who have never received a diagnosis of cognitive impairment. |
The ExéSem battery is a neuropsychological assessment tool designed to evaluate semantic processing and the contribution of executive control in patients with or without neurocognitive disorders.
It consists of three tasks: (1) a dual task combining semantic judgment and semantic matching using identical items, (2) a word-to-picture matching task, and (3) a rapid naming task.
Each task is structured to manipulate the level of executive demand required to access semantic representations.
This variation allows the identification of whether semantic difficulties remain stable or worsen under increased executive load, thereby distinguishing primary semantic deficits from executive-related semantic impairments.
The battery is administered by a trained professional using standardized instructions and requires approximately 30 minutes to complete.
It is used for diagnostic and research purposes only and does not involve any therapeutic intervention.
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Participants with Cognitive Impairment
Participants receiving memory clinic care with a diagnosis of Alzheimer's disease, at the stage of minor or major neurocognitive impairment, according to the 2011 NIA-AA criteria, or with a diagnosis of vascular neurocognitive impairment according to the VasCog-2-WSO diagnostic criteria , or with a diagnosis of primary progressive aphasia with semantic variant.
Participants with a Mini-Mental State Examination (MMSE) score ≥ 20/30, within the 6 months preceding enrollment;
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The ExéSem battery is a neuropsychological assessment tool designed to evaluate semantic processing and the contribution of executive control in patients with or without neurocognitive disorders.
It consists of three tasks: (1) a dual task combining semantic judgment and semantic matching using identical items, (2) a word-to-picture matching task, and (3) a rapid naming task.
Each task is structured to manipulate the level of executive demand required to access semantic representations.
This variation allows the identification of whether semantic difficulties remain stable or worsen under increased executive load, thereby distinguishing primary semantic deficits from executive-related semantic impairments.
The battery is administered by a trained professional using standardized instructions and requires approximately 30 minutes to complete.
It is used for diagnostic and research purposes only and does not involve any therapeutic intervention.
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この研究は何を測定していますか？
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
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Score obtained on the ExéSem battery
時間枠：At enrollment
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The primary outcome is the total score on the ExéSem battery (max=172), assessing semantic and executive-semantic processing.
The battery includes semantic judgment (30 items), semantic matching (20 items), word-image matching (72 items), and rapid naming (50 items).
Tasks vary in executive demand to determine whether performance declines under increased cognitive load, distinguishing primary semantic deficits from executive-related impairments.
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At enrollment
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協力者と研究者
スポンサー
研究記録日
主要日程の研究
研究開始 (推定)
一次修了 (推定)
研究の完了 (推定)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
キーワード
追加の関連 MeSH 用語
その他の研究ID番号
- 69HCL25_1144
- 2025-A02845-44 (その他の識別子：ID-RCB)
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