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Insufficient Sleep and Sleep Deprivation

Insufficient Sleep and Sleep Deprivation

Insufficient sleep refers to not getting the recommended amount of sleep for optimal functioning, even if it's just slightly less than needed. Sleep insufficiency may occur due to lifestyle choices, such as staying up late for social events or work, resulting in routinely getting less sleep than required. For example, consistently sleeping 6 hours when the body needs 7-9 hours can lead to cumulative effects on health and well-being.
Sleep deprivation is a more severe form of sleep loss...

Depression: Overview

Depression: Overview

Depression is a prevalent mental illness marked by persistent sadness and lack of interest in previously enjoyable activities. It can take several forms, including major depression, persistent depressive disorder, and bipolar I and II disorders. Symptoms range from emotional changes like chronic worry to physical changes like sleep disturbances and suicidal thoughts. From a neurobiological perspective, depression is believed to be triggered by abnormalities in the brain's prefrontal cortex,...

Long-term Depression

Long-term Depression

Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.

Long-term Depression

Long-term Depression

Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
Calcium Ion Concentration Mechanism
If over time, all...

Drug Dosing: Geriatric Patients

Drug Dosing: Geriatric Patients

Elderly individuals encompass a diverse population with varying degrees of age-related physiological changes. Defining the elderly presents challenges, as the geriatric population is often arbitrarily categorized as individuals older than 65. However, many individuals in this group lead active and healthy lives, with an increasing number surpassing 85 years and falling into the older elderly category. Physiological changes associated with aging impact performance capacity and homeostatic...

Pharmacodynamics in Geriatric Patients: Effects of Age

Pharmacodynamics in Geriatric Patients: Effects of Age

Age-related pharmacokinetic changes are extensively documented, but understanding age-related pharmacodynamic alterations is relatively limited. This knowledge gap can be partly attributed to the complexity of developing appropriate measures of drug responses compared to bioanalytical methods for determining drug concentrations.Most information regarding age-related differences in human pharmacodynamics originates from cross-sectional studies. However, these studies assume that observed mean...

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Related Experiment Video

Updated: Jun 9, 2026

Association Between Sleep Quality and Cognitive Symptoms in Patients with Major Depressive Disorder

Association Between Sleep Quality and Cognitive Symptoms in Patients with Major Depressive Disorder

Published on: April 26, 2024

[Sleep and depression in elderly people].

Alain Nicolas¹, Jean-Michel Dorey, Eric Charles

¹Service hospitalo-universitaire de psychiatrie, Unité d'exploration hypnologique, CH Le Vinatier, Bron.

Psychologie & Neuropsychiatrie Du Vieillissement

|August 27, 2010

Summary

Insomnia and depression are common in older adults, often linked by aging-related health issues. Addressing sleep problems is crucial, as untreated insomnia can worsen depression prognosis.

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High-Throughput Small Molecule Drug Screening For Age-Related Sleep Disorders Using Drosophila melanogaster

High-Throughput Small Molecule Drug Screening For Age-Related Sleep Disorders Using Drosophila melanogaster

Published on: October 20, 2023

Area of Science:

Geriatric Medicine
Psychiatry
Sleep Medicine

Context:

Mood disorders and sleep disturbances are closely linked, particularly in the elderly population.
The prevalence of insomnia and depressive symptoms increases with age.
Somatic comorbidities common in aging are risk factors for both insomnia and depression.

Purpose:

To highlight the intricate relationship between mood disorders, sleep disturbances, and aging.
To emphasize the importance of assessing the origin of sleep complaints, considering primary and secondary insomnia alongside depression.
To discuss therapeutic strategies for insomnia in the context of depression.

Summary:

Assessment of sleep complaints in the elderly requires differentiating primary and secondary insomnia and considering co-existing depression.
Untreated insomnia in patients with depression is associated with a poorer prognosis.
Chronotherapy is presented as a promising therapeutic approach for insomnia, potentially reducing the need for psychotropic medications.

Impact:

This research underscores the need for a comprehensive approach to managing sleep disturbances in older adults, integrating mental health considerations.
It suggests that effective insomnia treatment may positively influence depression outcomes.
The findings advocate for exploring novel therapeutic avenues like chronotherapy in geriatric mental health and sleep medicine.