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Related Concept Videos

Human Genetics01:28

Human Genetics

Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
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...
Genomic Imprinting and Inheritance02:30

Genomic Imprinting and Inheritance

Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
Biological Causes of Schizophrenia01:29

Biological Causes of Schizophrenia

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 studies.
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...
Storage01:23

Storage

A schema is a mental framework that helps individuals organize and interpret information. Schemata, formed from previous experiences, influence how we process new information: how we encode it, the inferences we make, and how we retrieve it. For instance, a schema for what a typical classroom looks like might include desks, a teacher's desk, a whiteboard, and students in such an environment. This expectation helps us quickly understand and navigate new classrooms without needing to analyze each...

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Related Experiment Video

Updated: May 30, 2026

Mapping Alzheimer's Disease Variants to Their Target Genes Using Computational Analysis of Chromatin Configuration
04:41

Mapping Alzheimer's Disease Variants to Their Target Genes Using Computational Analysis of Chromatin Configuration

Published on: January 9, 2020

Genetic architecture of declarative memory: implications for complex illnesses.

Carrie E Bearden1, Katherine H Karlsgodt, Peter Bachman

  • 1Departments of Psychiatry and Biobehavioral Sciences and Psychology, Semel Institute for Neuroscience and Human Behavior, University of California, Los Angeles, CA, USA.

The Neuroscientist : a Review Journal Bringing Neurobiology, Neurology and Psychiatry
|August 12, 2011
PubMed
Summary
This summary is machine-generated.

Genetic factors significantly influence memory abilities, with both common and distinct inheritance patterns affecting different memory functions. Understanding this genetic architecture is key to explaining individual memory variations.

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Area of Science:

  • Neuroscience
  • Genetics
  • Cognitive Science

Background:

  • Memory abilities show significant individual variation, despite being highly heritable.
  • The precise genetic underpinnings of these memory variations are not fully understood.

Purpose of the Study:

  • To review evidence on the genetic transmission of memory functions.
  • To explore the role of both common and independent genetic factors in memory variability.
  • To examine the genetic architecture of distinct memory subcomponents.

Main Methods:

  • Review of existing literature on memory assessment, neural and molecular bases.
  • Analysis of evidence for specialist and generalist genes in memory variability.
  • Examination of data from complex and single-gene disorders impacting memory.

Main Results:

  • Evidence supports both shared and independent genetic contributions to different memory aspects.
  • Distinct memory subcomponents may have unique genetic architectures.
  • Genetic disorders offer insights into molecular mechanisms of human memory.

Conclusions:

  • Individual differences in memory are influenced by a complex interplay of genetic factors.
  • A nuanced understanding of memory's genetic basis requires considering its distinct subcomponents.
  • Further research into genetic disorders can illuminate fundamental memory mechanisms.