Related Experiment Video
Updated: May 19, 2026
07:33
Optogenetic Entrainment of Hippocampal Theta Oscillations in Behaving Mice
Published on: June 29, 2018
The functional importance of rhythmic activity in the brain
Gregor Thut1, Carlo Miniussi, Joachim Gross
1Centre for Cognitive Neuroimaging (CCNi), Institute of Neuroscience and Psychology, University of Glasgow, Glasgow, UK. Gregor.Thut@glasgow.ac.uk
Current Biology : CB
|August 25, 2012
Summary
Brain oscillations, or brain rhythms, are manipulated using non-invasive stimulation. This research reveals a direct causal link between these brain rhythms and behavioral performance, advancing our understanding of brain function.
Area of Science:
- Neuroscience
- Cognitive Science
- Brain Activity Research
Background:
- Brain oscillations (brain rhythms) are well-documented but their functional significance remains largely unknown.
- Understanding the role of brain rhythms in cognition and behavior is a key challenge in neuroscience.
Purpose of the Study:
- To explore the functional importance of brain oscillations using intervention approaches.
- To establish a causal relationship between brain rhythms and behavioral performance.
Main Methods:
- Application of non-invasive brain stimulation techniques (sensory input or transcranial) to manipulate the timing of brain oscillations.
- Monitoring behavioral consequences following brain oscillation manipulation.
Main Results:
- Demonstrated rapid, periodic fluctuations in behavioral performance that are synchronized with manipulated brain oscillations.
- Established a causal link between specific brain rhythms and observable behaviors.
Conclusions:
- Intervention approaches provide novel insights into the functional roles of brain oscillations.
- Findings support and allow for new testing of established models concerning the functions of brain rhythms.
Related Concept Videos
01:13Functional Brain Systems: Reticular Formation
The reticular formation is a complex network of gray and white matter located within the brainstem extending from the medulla to the midbrain.
Within the reticular formation, there are several distinct nuclei that can be classified into three broad categories. The Raphe nuclei are located along the midline of the brainstem. They are primarily known for their role in synthesizing and releasing serotonin, a neurotransmitter involved in regulating mood, appetite, sleep, and circadian rhythms. The...
Within the reticular formation, there are several distinct nuclei that can be classified into three broad categories. The Raphe nuclei are located along the midline of the brainstem. They are primarily known for their role in synthesizing and releasing serotonin, a neurotransmitter involved in regulating mood, appetite, sleep, and circadian rhythms. The...
01:15Functional Brain Systems: Limbic System
The limbic system, often called the "emotional brain," is a complex set of structures located deep within the brain. The intricate network of the limbic system supports a wide range of psychological functions, from emotional regulation to memory formation and sensory processing. This functional brain region encompasses specific parts of the diencephalon and the cerebrum, integrating the higher mental functions of the cerebral cortex with the primitive emotional responses of the deep brain...
01:30Organization of the Brain
The brain is an integral component of the nervous system and serves as the center for processing sensory inputs, making decisions, and directing bodily actions. This complex organ is organized into three primary sections: the hindbrain, midbrain, and forebrain, each responsible for a range of vital functions.
Hindbrain
The hindbrain, located at the base of the brain, plays a vital role in regulating automatic processes that sustain life. It includes the medulla oblongata, which is essential for...
Hindbrain
The hindbrain, located at the base of the brain, plays a vital role in regulating automatic processes that sustain life. It includes the medulla oblongata, which is essential for...
01:23Brain Waves
Brain waves are electrical signals generated by the neurons in the brain, which are regularly monitored to measure mental activities. Brain waves and their frequency ranges can be measured using an electroencephalogram or EEG. There are four main types of brain waves, each with distinct characteristics:
01:28Integration of Synaptic Events
Synaptic integration mainly includes the summation of graded potentials. Graded potentials, regardless of their type, cause subtle alterations in membrane voltage, resulting in either depolarization or hyperpolarization. These incremental changes, when combined or summed, can propel the neuron toward its threshold. Consider, for example, a membrane experiencing a +15 mV shift, causing it to depolarize from -70 mV to -55 mV. In this scenario, graded potentials govern the membrane's ability to...