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Mélanie Brion, Valérie Dormal, Séverine Lannoy, Serge Mertens, Philippe de Timary, Pierre Maurage
BACKGROUND: Alcohol-dependent individuals (ALC) simultaneously present decreased inhibitory control and increased attention towards alcohol-related cues. The dual-process models have proposed that these symptoms reflect an imbalance between prefrontal/reflective and limbic/automatic systems, respectively leading to cognitive dysfunctions in executive processes and to alcohol-related bias. However, most previous research has focused on a separate exploration of these systems among ALC, and the direct measure of their interactions remains to be conducted...
March 6, 2018: Journal of Clinical and Experimental Neuropsychology
Mohamad El Haj, Jean Louis Nandrino
We investigated whether patients with Korsakjoff's Sybdrome (KS) would demonstrate a discrepancy between (low) autobiographical specificity and (high) sense of reliving. We invited 20 KS patients and 24 controls to retrieve personal memories. After memory retrieval, they were invited to rate subjective characteristics of their recall (e.g., reliving, travel in time, remembering, realness). Besides this rating, we analyzed memories objectively with regard to specificity. Analysis demonstrated poorer sense of reliving and memory specificity in KS patients than in controls...
March 1, 2018: Consciousness and Cognition
Marian Andrei Stanciu, Robert D Rafal, Oliver H Turnbull
Amnesic patients can re-experience emotions elicited by forgotten events, suggesting that brain systems for episodic and emotional memory are independent. However, the range of such emotional memories remains under-investigated (most studies employing just positive-negative emotion dyads), and executive function may also play a role in the re-experience of emotions. This is the first investigation of the intensity of the emotional re-experience of a range of discrete emotions (anger, fear, sadness, and happiness) for a group of amnesic patients...
February 7, 2018: Journal of Neuropsychology
Jed A Diekfuss, Jessica De Larwelle, Susan H McFadden
Background/Study Context: Employing the stereotype content model and terror management theory, we examined whether stereotypes and feelings about persons with dementia vary depending on the type of dementia diagnosis and purported causes of the dementia. METHODS: Participants were randomly assigned to read one of four vignettes that depicted a man who consulted his doctor because of memory problems. All vignettes described the same symptoms and diagnostic tests, but each of four groups read a different result: all tests normal (Normal); Alzheimer's disease (AD); Wernicke-Korsakoff Syndrome (WKS) associated with alcohol abuse; and chronic traumatic encephalopathy (CTE) associated with head injuries from playing football in high school and college...
March 2018: Experimental Aging Research
Joanna Bielewicz, Anna Szczepańska-Szerej, Magdalena Ogórek, Piotr Dropko, Katarzyna Wojtal, Konrad Rejdak
We reported the case of a patient with Wernicke-Korsakoff syndrome (WKs) as an early clinical manifestation of sporadic Creutzfeld-Jakob disease (sCJD). The 66-year-old female complained of dizziness and imbalance which mostly occurred while walking. A neurological examination revealed a triad of symptoms characteristic for WKs such as gaze paresis, ataxia of limbs and trunk as well as memory disturbances with confabulations. The disturbances increased during the course of the disease, which led to the death of the patient four months after the appearance of the signs...
January 30, 2018: Prion
Luis Guillermo Uribe, María Alejandra Pérez, Camilo Andrés Lara, Natalia Rueda, Javier Augusto Hernández
Cytomegalovirus (CMV) is one of the opportunistic microorganisms with the highest prevalence in immunocompromised patients. Reactivation has decreased after the introduction of highly active antiretroviral therapy (HAART). Encephalitis has been reported in the coinfection as one of the most frequent presentations.We present the case of a young adult patient with HIV infection and rapid neurological deterioration due to classic clinical symptoms and signs of the Wernicke-Korsakoff syndrome, with no risk factors for thiamine deficiency, with images by nuclear magnetic resonance typical of the syndrome, and identification of cytomegalovirus in cerebrospinal fluid...
December 1, 2017: Biomédica: Revista del Instituto Nacional de Salud
Anthony G Greenwald, Mahzarin R Banaji
In the 1970s, memory researchers converged on interesting phenomena observed in Korsakoff-syndrome amnesic patients. These patients' performances on difficult tasks were reliably improved by practice sessions from which they could recall nothing. Related findings of indirect memory effects in college students triggered wide attention to phenomena that, in 1985, were first identified as implicit memory. Within a decade, the indirect measurement methods of implicit memory research had spread to social psychologists' studies of attitudes and stereotypes...
December 2017: American Psychologist
Nicolaas Jm Arts, Serge Jw Walvoort, Roy Pc Kessels
In this review, we present a survey on Korsakoff's syndrome (KS), a residual syndrome in patients who suffered from a Wernicke encephalopathy (WE) that is predominantly characterized by global amnesia, and in more severe cases also by cognitive and behavioral dysfunction. We describe the history of KS and its definition, its epidemiology, and the lack of consensus criteria for its diagnosis. The cognitive and behavioral symptoms of KS, which include anterograde and retrograde amnesia, executive dysfunction, confabulation, apathy, as well as affective and social-cognitive impairments, are discussed...
2017: Neuropsychiatric Disease and Treatment
Yvonne Cm Rensen, Jos Im Egger, Josette Westhoff, Serge Jw Walvoort, Roy Pc Kessels
Background: Errorless learning (EL) is a promising rehabilitation principle for (re)learning instrumental activities in patients with amnesia, including patients with Korsakoff's syndrome (KS). Successfully (re)learning tasks might improve the sense of competence and independence, and subsequently the quality of life. Quality of life in patients with KS has received limited attention, and no studies have been conducted to experimentally examine the effect of EL on quality of life in patients in this patient group...
2017: Neuropsychiatric Disease and Treatment
Natsumi Tanabe, Eiji Hiraoka, Jun Kataoka, Takaki Naito, Ko Matsumoto, Junya Arai, Yasuhiro Norisue
Wet beriberi, characterized by high cardiac output with predominantly right-sided heart failure and lactic acidosis, is a disease caused by thiamine deficiency, and is rarely seen in modern society. However, patients with social withdrawal syndrome, also known as hikikomori syndrome, may be a new population at risk of thiamine deficiency. Hikikomori syndrome, first recognized in Japan, is becoming a worldwide issue. A 39-year-old Japanese patient was brought to our hospital, with a 3-week history of progressive shortness of breath and generalized edema...
March 2018: Journal of General Internal Medicine
P M Abdul-Muneer, Saleena Alikunju, Heather Schuetz, Adam M Szlachetka, Xiaotang Ma, James Haorah
Wernicke's encephalopathy, a common neurological disease, is caused by thiamine (vitamin B1) deficiency. Neuropathy resulting from thiamine deficiency is a hallmark of Wernicke-Korsakoff syndrome in chronic alcohol users. The underlying mechanisms of this deficiency and progression of neuropathy remain to be understood. To uncover the unknown mechanisms of thiamine deficiency in alcohol abuse, we used chronic alcohol consumption or thiamine deficiency diet ingestion in animal models. Observations from animal models were validated in primary human neuronal culture for neurodegenerative process...
November 11, 2017: Molecular Neurobiology
Salvatore Di Marco, Laura Pilati, Filippo Brighina, Brigida Fierro, Giuseppe Cosentino
Thiamine (vitamin B1) deficiency is a common condition in alcohol abusers, which can lead to damage of both the peripheral and the central nervous systems. Here we describe the case of an alcoholic patient who presented with acute onset of ataxia, severe weakness of the four limbs, and hypoesthesia and dysesthesia of the distal portion of the upper and lower extremities. The clinical picture also included mental confusion and amnesia. A diagnosis of Wernicke-Korsakoff syndrome was made based on clinical symptoms and brain RMI findings...
November 8, 2017: Clinical Neurology and Neurosurgery
Ineke J Gerridzen, Cees M P M Hertogh, Marja F Depla, Ruth B Veenhuizen, Els M L Verschuur, Karlijn J Joling
OBJECTIVES: Caring for people with Korsakoff syndrome (KS) residing in specialized long-term care facilities (LTCFs) can be distressing because of challenging neuropsychiatric symptoms (NPS). However, good-quality studies on NPS in this under-researched population are lacking. This study examined the prevalence and severity of NPS in people with KS living in specialized LTCFs and the associated caregiver distress. DESIGN: Cross-sectional, observational study. Data were obtained using structured interviews with care staff, elderly care physicians, and residents...
October 24, 2017: Journal of the American Medical Directors Association
Anke Loijen, Mike Rinck, Serge J W Walvoort, Roy P C Kessels, Eni S Becker, Jos I M Egger
BACKGROUND: To examine the applicability of an alcohol-avoidance training procedure in patients with alcohol dependence and alcohol-induced neurocognitive disorders, we trained two groups that differed in the degree of cognitive impairment: One group fulfilled the DSM-5 criteria for Alcohol-Induced Mild Neurocognitive Disorder, and one group was diagnosed with Korsakoff's syndrome (Alcohol-Induced Major Neurocognitive Disorder, Confabulatory/Amnesic subtype; DSM-5). The intervention is assumed to match the preserved cognitive capacity for implicit learning in both groups...
October 16, 2017: Alcoholism, Clinical and Experimental Research
Natalie M Zahr, Adolf Pfefferbaum
Brain imaging technology has allowed researchers to conduct rigorous studies of the dynamic course of alcoholism through periods of drinking, sobriety, and relapse and to gain insights into the effects of chronic alcoholism on the human brain. Magnetic resonance imaging (MRI) studies have distinguished alcohol-related brain effects that are permanent from those that are reversible with abstinence. In support of postmortem neuropathological studies showing degeneration of white matter, MRI studies have shown a specific vulnerability of white matter to chronic alcohol exposure...
2017: Alcohol Research: Current Reviews
Yvonne C M Rensen, Jos I M Egger, Josette Westhoff, Serge J W Walvoort, Roy P C Kessels
Errorless learning has proven to be an effective method for (re)learning tasks in several patient groups with amnesia. However, so far only a handful of studies have examined the effects of errorless learning in patients with Korsakoff's syndrome. The aims of this feasibility study were to (a) examine the effects of errorless learning training on (re)learning tasks in a patient with Korsakoff's syndrome, (b) examine the effects of the nature of the training on the execution of the tasks, and (c) examine characteristics that may mediate learning outcome...
October 2, 2017: Neuropsychological Rehabilitation
Kalyan B Bhattacharyya
James Papez worked on the anatomical substrates of emotion and described a circuit, mainly composed of the hippocampus, thalamus and cingulum, and published his observations in 1937. However, such an idea existed before him, as evidenced by the rudimentary indications from Paul Broca, and Paul MacLean added some other structures like, septum, amygdala, and hypothalamus in its ambit and called it the limbic system. Paul Ivan Yakovlev, proposed a circuit which also referred to orbitofrontal, insular, anterior temporal lobe, and other nuclei of thalamus...
July 2017: Annals of Indian Academy of Neurology
Mohamad El Haj, Jean-Louis Nandrino
A body of research suggests compromise of autobiographical memory in Korsakoff's syndrome (KS). The present paper extends this literature by investigating the subjective experience of autobiographical recall in the syndrome. Patients with KS and controls were asked to retrieve autobiographical memories. After memory retrieval, participants were asked to rate phenomenological characteristics of their memories (i.e., reliving, back in time, remembering, realness, visual imagery, auditory imagery, language, emotion, rehearsal, importance, spatial recall and temporal recall)...
October 2017: Consciousness and Cognition
Mélanie Brion, Fabien D'Hondt, Séverine Lannoy, Anne-Lise Pitel, Donald A Davidoff, Pierre Maurage
INTRODUCTION: Decoding emotional information from faces and voices is crucial for efficient interpersonal communication. Emotional decoding deficits have been found in alcohol-dependence (ALC), particularly in crossmodal situations (with simultaneous stimulations from different modalities), but are still underexplored in Korsakoff syndrome (KS). The aim of this study is to determine whether the continuity hypothesis, postulating a gradual worsening of cognitive and brain impairments from ALC to KS, is valid for emotional crossmodal processing...
September 8, 2017: Cognitive Neuropsychiatry
Anne-Pascale Le Berre, Eva M Müller-Oehring, Tilman Schulte, Matthew R Serventi, Adolf Pfefferbaum, Edith V Sullivan
A disorder of metamemory, expressed as unawareness of mnemonic ability, is typically associated with the profound amnesia of Korsakoff's Syndrome (KS). A similar but less severe type of limited awareness can also occur in non-KS alcoholism and is observed as an impairment in generating Feeling-of-Knowing (FOK) predictions about future recognition performance. We previously found that FOK accuracy was selectively related to volumes of the insula in alcoholics involved in the present study. Unknown, however, are the neural substrates of unawareness of memory impairment in alcoholism...
October 2017: Cortex; a Journal Devoted to the Study of the Nervous System and Behavior
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