Related Experiment Video
Updated: Feb 15, 2026

12:48
Measuring Near Plasma Membrane and Global Intracellular Calcium Dynamics in Astrocytes
Published on: April 26, 2009
13.6K
Functional Roles of Astrocyte Calcium Elevations: From Synapses to Behavior
Sónia Guerra-Gomes1,2, Nuno Sousa1,2, Luísa Pinto1,2
1Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Braga, Portugal.
Frontiers in Cellular Neuroscience
|February 2, 2018
Summary
Astrocytes regulate brain function through calcium signals. This review explores how diverse astrocytic calcium events impact synapses, neural circuits, and behavior.
Area of Science:
- Neuroscience
- Cellular Biology
- Glial Cell Biology
Background:
- Astrocytes are crucial glial cells regulating synaptic transmission and plasticity.
- Astrocytic calcium elevations are key indicators of cellular response and affect downstream processes.
- Recent technological advancements enable detailed quantification of astrocytic calcium dynamics.
Purpose of the Study:
- To review the functional impact of heterogeneous astrocytic calcium events.
- To explore the consequences of these events across different brain regions.
- To connect astrocytic activity to synaptic, circuit, and behavioral outcomes.
Main Methods:
- Literature review of experimental evidence.
- Analysis of studies utilizing advanced imaging techniques for astrocytic calcium.
- Synthesis of findings across various brain regions and functional levels.
Main Results:
- Evidence demonstrates that astrocytic calcium elevations significantly influence synaptic function.
- Heterogeneous calcium events in astrocytes correlate with alterations in neural circuit activity.
- These astrocytic dynamics have demonstrable consequences on observable behaviors.
Conclusions:
- Astrocytic calcium signaling is a critical modulator of brain function.
- Understanding these signals is essential for comprehending neural processing and behavior.
- Further research into astrocytic calcium dynamics promises new insights into brain health and disease.
Related Concept Videos
The Synapse
133.8K
Neurons communicate with one another by passing on their electrical signals to other neurons. A synapse is the location where two neurons meet to exchange signals. At the synapse, the neuron that sends the signal is called the presynaptic cell, while the neuron that receives the message is called the postsynaptic cell. Note that most neurons can be both presynaptic and postsynaptic, as they both transmit and receive information.
133.8K
Roles of Electrolytes: Calcium and Phosphate
1.4K
Calcium and phosphate are essential electrolytes in the human body, with calcium being the most abundant mineral. Around 99% of the body's calcium is stored in the skeleton and teeth, forming a crystal lattice of mineral salts in combination with phosphates. Calcium plays crucial roles in various bodily functions such as blood clotting, neurotransmitter release, muscle tone maintenance, and nervous and muscle tissue excitability.
The calcium concentration in blood plasma is primarily...
The calcium concentration in blood plasma is primarily...
1.4K
Freezing Point Depression and Boiling Point Elevation
41.3K
Boiling Point Elevation
The boiling point of a liquid is the temperature at which its vapor pressure is equal to ambient atmospheric pressure. Since the vapor pressure of a solution is lowered due to the presence of nonvolatile solutes, it stands to reason that the solution’s boiling point will subsequently be increased. Vapor pressure increases with temperature, and so a solution will require a higher temperature than will pure solvent to achieve any given vapor pressure, including one...
The boiling point of a liquid is the temperature at which its vapor pressure is equal to ambient atmospheric pressure. Since the vapor pressure of a solution is lowered due to the presence of nonvolatile solutes, it stands to reason that the solution’s boiling point will subsequently be increased. Vapor pressure increases with temperature, and so a solution will require a higher temperature than will pure solvent to achieve any given vapor pressure, including one...
41.3K
Electrical Synapses
11.0K
Electrical synapses found in all nervous systems play important and unique roles. In these synapses, the presynaptic and postsynaptic membranes are very close together (3.5 nm) and are actually physically connected by channel proteins forming gap junctions.
Gap junctions allow the current to pass directly from one cell to the next. In contrast, in the chemical synapse, the neurotransmitters carry the information through the synaptic cleft from one neuron to the next. They consist of two...
Gap junctions allow the current to pass directly from one cell to the next. In contrast, in the chemical synapse, the neurotransmitters carry the information through the synaptic cleft from one neuron to the next. They consist of two...
11.0K
Chemical Synapses
12.0K
Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
12.0K
Chemical Synapses
4.6K
Chemical synapses are specialized sites between two neurons or between a neuron and a non-neuronal cell like a muscle, glandular or sensory cell.
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
Because chemical synapses depend on the release of neurotransmitter molecules from synaptic vesicles to pass on their signal, there is an approximately one millisecond delay between when the axon potential reaches the presynaptic terminal and when the neurotransmitter leads to opening of postsynaptic ion channels. Additionally, this signaling is...
4.6K

