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Related Concept Videos

Implicit Memories01:24

Implicit Memories

Implicit memories, also known as non-declarative memories, are long-term memories that function outside of conscious awareness. These memories influence behavior and skills without explicit knowledge. This type of memory is evident in tasks like playing tennis, snowboarding, and texting. Implicit memory has three subsystems: procedural memory, conditioning, and priming. This type of memory is essential in various activities, from everyday tasks to specialized skills.
One key aspect of implicit...
Long-Term Memory01:18

Long-Term Memory

Long-term memory is a relatively permanent type of memory, capable of storing vast amounts of information over extended periods. Its storage capacity is generally considered unlimited.
Long-term memory can be categorized into two primary types: explicit and implicit memory. Explicit memory, also known as declarative memory, involves the conscious recollection of information that we deliberately try to remember, recall, and articulate. This type of memory encompasses specific facts, events, and...
Alzheimer Disease l: Introduction01:29

Alzheimer Disease l: Introduction

Alzheimer disease is a chronic, progressive, and irreversible neurodegenerative disorder and the most common cause of dementia in older adults. It leads to gradual neuronal loss, causing cognitive decline, behavioral changes, and loss of functional independence.Risk Factors and EtiologyThe disease is multifactorial. Age is the strongest risk factor, with prevalence doubling every 5 years after age 65. Genetic factors include mutations in genes such as APP, PSEN1, and PSEN2, which are associated...
Alzheimer Disease ll: Pathophysiology01:23

Alzheimer Disease ll: Pathophysiology

Alzheimer disease involves structural changes in the brain that begin long before symptoms appear. The most distinctive features are extracellular neuritic plaques and intracellular neurofibrillary tangles.Neuritic plaques form in the cerebral cortex and around blood vessels. These plaques contain a dense core of beta-amyloid (Aβ)—a toxic protein fragment that clumps outside neurons. The core is surrounded by damaged neuronal extensions, as well as reactive astrocytes and microglia. Abnormal...
Dementia l: Introduction01:22

Dementia l: Introduction

Dementia is an acquired, progressive syndrome characterized by a decline in multiple cognitive domains severe enough to impair daily functioning and reduce independence. Although memory loss is a central feature, the diagnosis requires additional deficits involving language, executive function, visuospatial skills, judgment, calculation, or abstract reasoning. These cognitive impairments reflect underlying neurodegenerative or vascular processes that gradually disrupt neuronal networks...
Interference and Decay01:16

Interference and Decay

Forgetting is a complex cognitive phenomenon influenced by several factors, among which interference and decay are particularly prominent. These processes explain why individuals often struggle to retrieve specific information from memory, leading to lapses in recall that can be observed in everyday situations.
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...

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Related Experiment Video

Updated: Jun 22, 2026

The Double-H Maze: A Robust Behavioral Test for Learning and Memory in Rodents
09:01

The Double-H Maze: A Robust Behavioral Test for Learning and Memory in Rodents

Published on: July 8, 2015

Alzheimer's disease and implicit memory.

Sergio Machado1, Marlo Cunha, Daniel Minc

  • 1Institute of Psychiatry, Federal University of Rio de Janeiro, RJ, Brazil. secm80@yahoo.com.br

Arquivos De Neuro-Psiquiatria
|June 24, 2009
PubMed
Summary
This summary is machine-generated.

Alzheimer's disease preserves implicit memory, allowing compensatory strategies like activities of daily living (ADL) to help with explicit memory loss. Cognitive rehabilitation (CR) shows promise in this compensation.

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Examining the Characteristics of Episodic Memory using Event-related Potentials in Patients with Alzheimer's Disease
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Related Experiment Videos

Last Updated: Jun 22, 2026

The Double-H Maze: A Robust Behavioral Test for Learning and Memory in Rodents
09:01

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Published on: July 8, 2015

Examining the Characteristics of Episodic Memory using Event-related Potentials in Patients with Alzheimer's Disease
11:01

Examining the Characteristics of Episodic Memory using Event-related Potentials in Patients with Alzheimer's Disease

Published on: August 30, 2011

The 4 Mountains Test: A Short Test of Spatial Memory with High Sensitivity for the Diagnosis of Pre-dementia Alzheimer's Disease
06:23

The 4 Mountains Test: A Short Test of Spatial Memory with High Sensitivity for the Diagnosis of Pre-dementia Alzheimer's Disease

Published on: October 13, 2016

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Neurology

Background:

  • Alzheimer's disease (AD) selectively impairs certain memory types, particularly explicit memory.
  • Understanding the interplay between different memory systems in AD is crucial for developing effective interventions.

Purpose of the Study:

  • To review the relationship between explicit and implicit memory in Alzheimer's disease (AD).
  • To explore the potential of implicit memory for compensating explicit memory deficits in AD.

Main Methods:

  • Literature review focusing on studies examining memory function in Alzheimer's disease.
  • Analysis of tasks assessing explicit and implicit memory performance.
  • Evaluation of compensatory strategies and cognitive rehabilitation (CR) in AD.

Main Results:

  • Implicit memory remains intact in AD, regardless of the task, and is not interfered with by explicit memory.
  • Implicit memory-based strategies, such as activities of daily living (ADL), can effectively compensate for explicit memory impairments.
  • Cognitive rehabilitation (CR) shows positive outcomes in mitigating explicit memory deficits.

Conclusions:

  • Explicit and implicit memory systems appear functionally independent in AD, even when one is compromised.
  • Leveraging implicit memory capacity without explicit system interference enhances learning outcomes in AD.