Related Experiment Video
Updated: Jan 20, 2026
06:32
Preparation of Rhythmically-active In Vitro Neonatal Rodent Brainstem-spinal Cord and Thin Slice
Published on: March 23, 2019
12.2K
Improving sensitivity, specificity, and reproducibility of individual brainstem activation
Eva Matt1,2, Florian Ph S Fischmeister1,2,3, Ahmad Amini1,2
1Department of Neurology, Medical University of Vienna, Spitalgasse 23, 1090, Vienna, Austria.
Brain Structure & Function
|August 23, 2019
Summary
High-field functional magnetic resonance imaging (fMRI) can reliably detect brainstem activation. Optimizing physiological noise correction, particularly using cerebrospinal fluid signals, enhances accuracy for clinical applications.
Area of Science:
- Neuroimaging
- Functional Magnetic Resonance Imaging (fMRI)
- Brainstem Neuroscience
Background:
- Functional imaging of the brainstem is crucial for clinical diagnostics.
- Improving signal quality in brainstem fMRI is essential for reliable activation assessments.
Purpose of the Study:
- To compare different physiological noise correction methods for brainstem fMRI.
- To assess the reproducibility and reliability of brainstem activation detection.
Main Methods:
- Six healthy subjects underwent repeated 7 Tesla fMRI sessions with jaw clenching task.
- Evaluated physiological noise correction (aCompCor, RETROICOR) with CSF or brainstem masking.
- Utilized ROC, activation overlap, and ICC analyses to compare methods.
Main Results:
- Brainstem masking increased activation and improved sensitivity/specificity (AUC).
- Cerebrospinal fluid (CSF) time series correction (aCompCor) showed the highest AUC, overlap, and ICC.
- Reliable identification of brainstem motor nuclei activation was achieved on a single-subject level.
Conclusions:
- Optimized high-field fMRI acquisition and processing enable reliable brainstem activation detection.
- Specific physiological noise correction methods significantly improve reproducibility and reliability.
- These findings support the clinical application of brainstem fMRI.
Keywords:
BrainstemFunctional magnetic resonance imagingPhysiological noiseReliabilityReproducibilityTrigeminal motor nucleusMore Related Videos
Related Concept Videos
01:13Sensitivity, Specificity, and Predicted Value
1.2K
In healthcare diagnostics, laboratory tests play a crucial role in identifying and diagnosing a wide range of medical conditions. However, interpreting test results is not always straightforward. An abnormal test result does not always confirm the presence of a disease, just as a normal result does not guarantee its absence. To assess the reliability of these diagnostic tools, healthcare practitioners rely on two key statistical indicators: sensitivity and specificity.
Sensitivity is the...
Sensitivity is the...
1.2K
01:19Brainstem
5.9K
The brainstem, located inferior to the brain and superior to the spinal cord, serves as a bridge between the cerebrum and the spinal cord. It plays a vital role in relaying information and controlling critical life functions. It comprises three primary regions: the midbrain, pons, and medulla oblongata.
The Midbrain
The midbrain is located beneath the diencephalon and connects the cerebrum with the lower parts of the brain. The cerebral peduncles are prominent midbrain structures that house the...
The Midbrain
The midbrain is located beneath the diencephalon and connects the cerebrum with the lower parts of the brain. The cerebral peduncles are prominent midbrain structures that house the...
5.9K
01:30Impact of Individuals on Individuals
359
Human behavior is intricately shaped by social influences that arise from interactions with others in diverse contexts. These influences not only mold beliefs and attitudes but also drive the regulation of behaviors through both direct communication and observational learning. The study of these processes falls within the domain of social psychology, which seeks to understand how individuals are affected by and affect those around them.Mechanisms of Social InfluenceDirect social influence...
359
01:21Brainstem: Control Centers of Medulla
3.8K
The medulla oblongata is a crucial part of the brainstem responsible for controlling various autonomic and involuntary functions. It contains several nuclei, including the olivary, cuneate, gracile, and solitary nuclei.
Olivary Nucleus
The olivary nucleus, or inferior olivary nucleus, is located within the ventrolateral part of the medulla oblongata. It is primarily involved in motor coordination and motor learning. The olivary nucleus receives input from the spinal cord, cerebellum, and motor...
Olivary Nucleus
The olivary nucleus, or inferior olivary nucleus, is located within the ventrolateral part of the medulla oblongata. It is primarily involved in motor coordination and motor learning. The olivary nucleus receives input from the spinal cord, cerebellum, and motor...
3.8K
01:28Impact of Groups on Individuals
312
Groups play a fundamental role in shaping individual behavior, as they establish norms that guide interactions and decision-making. Social psychology examines how individuals conform to group expectations, often adjusting their attitudes and actions to align with group norms. These norms can be formal, such as workplace policies, or informal, such as unspoken social expectations within a fraternity.Conformity and Social InfluenceConformity arises when individuals modify their behaviors or...
312
01:25Impact of Individuals on a Group
300
In social psychology, the interplay between individuals and groups is a central concern, particularly regarding how individual actions and characteristics influence group processes and outcomes. While much research emphasizes the group's power in shaping individual behavior, it is equally significant to understand how individuals contribute to the functioning, development, and success of groups.Individual Roles in Group Productivity and Decision-MakingIndividuals are not passive participants in...
300