Related Experiment Video
Updated: Jul 12, 2026
06:27
An Olfactory Preference Test for Measuring Olfactory Hedonic Biases in Mouse Models of Depression
Published on: July 11, 2025
[Pain perception is not influenced by altered autonomic function in major depression]
Karl-Jürgen Bär1, Wolf Greiner
1Klinik für Psychiatrie und Psychotherapie, Friedrich-Schiller-Universität Jena, Philosophenweg 3, 07743 Jena. Karl-Juergen.Baer@med.uni-jena.de
Psychiatrische Praxis
|October 27, 2007
Summary
Autonomic dysfunction does not appear to cause altered pain perception in depression. This study found no link between cardiac autonomic function and pain sensitivity in depressed patients, even after treatment.
Area of Science:
- Neuroscience
- Psychiatry
- Pain Medicine
Context:
- Depression and chronic pain frequently coexist, impacting patient quality of life.
- The underlying physiological mechanisms linking these conditions remain unclear.
- Investigating autonomic nervous system involvement offers potential insights.
Purpose:
- To examine the relationship between autonomic dysfunction and altered pain perception in patients with depression.
- To assess these factors in unmedicated patients, during antidepressant therapy, and after remission.
- To determine if autonomic dysfunction plays a role in the pathophysiology of pain in depression.
Summary:
- Unmedicated depressed patients exhibited increased thermal pain thresholds, consistent with prior research.
- Cardiac autonomic dysfunction was not evident in unmedicated depressed individuals.
- The study found no correlation between autonomic function and pain perception changes.
Impact:
- Findings suggest autonomic dysfunction is unlikely to be a primary factor in altered pain perception associated with depression.
- This research may guide future investigations into the complex interplay between mood disorders and pain.
- Clarifying pathophysiological mechanisms can inform more targeted therapeutic strategies for comorbid depression and chronic pain.
Related Concept Videos
01:25Factors Affecting Perception
Perception is influenced by perceptual set, context, motivation, and emotion. Perceptual set, or perceptual expectancy, refers to the tendency to perceive things in a particular way, influenced by previous experiences and expectations. This phenomenon affects the interpretation of stimuli, creating a set of mental tendencies and assumptions that impact sensory perceptions of sound, taste, touch, and sight.
An illustrative example of a perceptual set is the scenario where an airline pilot told...
An illustrative example of a perceptual set is the scenario where an airline pilot told...
01:18Depression: 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,...
01:28Perception
Perception is a fundamental psychological process that enables individuals to organize, interpret, and consciously experience sensory information. This process is crucial for understanding and interacting with the world around us. It includes both bottom-up and top-down processing, each playing a distinct role in how we perceive our environment.
Bottom-up processing begins at the sensory level, where receptors detect external environmental stimuli. These could include the tactile sensation of...
Bottom-up processing begins at the sensory level, where receptors detect external environmental stimuli. These could include the tactile sensation of...
01:18Disorders of the Autonomic Nervous System
The autonomic nervous system (ANS) is an intricate network of nerves that controls functions such as the regulation of heart rate, digestion, and blood pressure regulation. When this system malfunctions, it can lead to various disorders that affect multiple bodily functions. One common feature of many autonomic disorders is the involvement of smooth blood vessels, which play a crucial role in regulating blood flow throughout the body.
Raynaud's disease, also known as Raynaud's phenomenon, is a...
Raynaud's disease, also known as Raynaud's phenomenon, is a...
01:22Autonomic Nervous System
The autonomic nervous system (ANS) is a critical component of the peripheral nervous system, primarily responsible for regulating involuntary bodily functions and maintaining homeostasis. It functions in tandem with the central nervous system (CNS) to seamlessly coordinate various physiological processes without the need for conscious control.
The ANS comprises two main divisions: the sympathetic and parasympathetic divisions. These divisions function antagonistically to maintain a dynamic...
The ANS comprises two main divisions: the sympathetic and parasympathetic divisions. These divisions function antagonistically to maintain a dynamic...
01:44Nociception
Nociception—the ability to feel pain—is essential for an organism’s survival and overall well-being. Noxious stimuli such as piercing pain from a sharp object, heat from an open flame, or contact with corrosive chemicals are first detected by sensory receptors, called nociceptors, located on nerve endings. Nociceptors express ion channels that convert noxious stimuli into electrical signals. When these signals reach the brain via sensory neurons, they are perceived as pain. Thus, pain helps the...