Related Experiment Video
Updated: Dec 26, 2025
07:26
The Deese-Roediger-McDermott DRM Task: A Simple Cognitive Paradigm to Investigate False Memories in the Laboratory
Published on: January 31, 2017
39.5K
False memory production in schizophrenia: A neurophysiological investigation
Grégoire Favre1,2, Sibylle K Horat1, François R Herrmann3
1Laboratory for Psychiatric Neuroscience and Psychotherapy, Department of Medicine, Faculty of Science & Medicine, University of Fribourg, Chemin du Musée 5, CH 1700 Fribourg, Switzerland.
Schizophrenia Research. Cognition
|March 11, 2020
Summary
Schizophrenia patients exhibit impaired false memory discrimination due to altered neural activity. Specifically, reduced P2 amplitude and less pronounced N400 indicate distinct verbal memory processing strategies in individuals with schizophrenia.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Psychiatry
Background:
- False memory is a known phenomenon in schizophrenia.
- Previous research has not investigated neural network involvement in false memory in schizophrenia.
Purpose of the Study:
- To investigate neural network differences in false memory formation in schizophrenia patients.
- To analyze event-related potentials (P2 and N400) during a verbal memory task in schizophrenia.
Main Methods:
- Compared 17 schizophrenia (SCZ) patients with 33 healthy controls (HC).
- Utilized the Deese-Roediger-McDermott (DRM) paradigm to elicit false memories.
- Employed electroencephalography (EEG) to measure P2 and N400 event-related potentials.
Main Results:
- SCZ patients showed reduced ability to distinguish true from false memories (lower A' index).
- SCZ patients exhibited lower P2 amplitude in frontal regions.
- Healthy controls showed a more pronounced N400 amplitude than SCZ patients in centro-parietal sites.
Conclusions:
- Lower P2 amplitude in SCZ may reflect difficulties in comparing memory elements to stimuli.
- Decreased N400 amplitude in SCZ suggests impaired verbal memory processing.
- Findings indicate that schizophrenia patients employ different strategies during false memory tasks.
Related Concept Videos
01:18False Memories
323
False memories represent a cognitive distortion in which individuals recall events that did not happen, or remember them in an altered form. This phenomenon highlights the brain's constructive nature in processing and recalling memories, emphasizing that memory is not a perfect representation of past events but rather a dynamic reconstruction influenced by various factors.
One primary source of false memories is misattribution, where individuals incorrectly associate external information...
One primary source of false memories is misattribution, where individuals incorrectly associate external information...
323
01:29Biological Causes of Schizophrenia
411
Schizophrenia, a severe psychiatric disorder, arises from a complex interplay of biological factors, including genetic predisposition, structural brain abnormalities, neurotransmitter dysregulation, and developmental irregularities. These factors collectively contribute to the onset and progression of the disorder, which typically manifests in late adolescence or early adulthood.
Genetic Factors in Schizophrenia
The genetic basis of schizophrenia is strongly supported by family and twin...
Genetic Factors in Schizophrenia
The genetic basis of schizophrenia is strongly supported by family and twin...
411
01:27Psychosis: Pathophysiology of Schizophrenia and Other Psychotic Disorders
1.7K
Schizophrenia is a neurodevelopmental disorder whose origins are rooted in complex genetic components. Despite our burgeoning understanding, the pathophysiology of this disorder remains incompletely deciphered.
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within...
Researchers have identified genetic factors that increase susceptibility to schizophrenia, underscoring the intricate interplay between genetics and environment in disease development. At the core of schizophrenia's pathophysiology is excessive dopaminergic neurotransmission within...
1.7K
01:30Negative and Cognitive Symptoms of Schizophrenia
342
Negative symptoms of schizophrenia indicate a reduction or absence of typical behaviors and emotional responses found in healthy individuals, while positive symptoms reflect an excess or distortion of normal functioning.
Negative Symptoms
Negative symptoms of schizophrenia manifest as deficits in normal emotional and behavioral functioning, profoundly impacting daily life. Individuals with schizophrenia often display a flat affect, characterized by a near-total absence of emotional expression,...
Negative Symptoms
Negative symptoms of schizophrenia manifest as deficits in normal emotional and behavioral functioning, profoundly impacting daily life. Individuals with schizophrenia often display a flat affect, characterized by a near-total absence of emotional expression,...
342
01:22Eyewitness Memory
380
Eyewitness memory refers to the recollection of events by someone who has directly witnessed them, often serving as critical evidence in legal settings. This type of memory is commonly used in criminal cases where a witness describes details like a suspect's appearance, clothing, or behavior during a crime. However, despite its perceived reliability, eyewitness memory is prone to significant errors.
One such error is memory distortion, which occurs because human memory does not function...
One such error is memory distortion, which occurs because human memory does not function...
380
01:29Psychological and Sociocultural Causes of Schizophrenia
400
Schizophrenia, a complex psychiatric disorder, has been historically misunderstood. Early psychological theories attributed its origins to childhood trauma and unresponsive parenting. However, contemporary research largely rejects these notions, favoring the vulnerability-stress hypothesis. This model proposes that individuals with a genetic predisposition to schizophrenia may develop the disorder following exposure to significant environmental stressors. Notably, studies on high-risk...
400