Brain Activity Recording
Brain Activity Recording - Related Videos
04:42
In Vivo Electrophysiological Recordings of Brain Activities from Multiple Sites in Rats
0 Views •
2025
This video demonstrates the detailed procedure for preparing an anesthetized rat for electrophysiological recordings of brain activity from multiple sites. The scalp is dissected to access the skull, and holes are drilled at precise locations to install and secure electrodes. Tungsten microwire electrodes are then inserted into the targeted location to record the data.
05:41
Functional Near-Infrared Spectroscopy for Recording Brain Activity During Social Interactions
0 Views •
2025
Source: Reindl, V., et al. Conducting Hyperscanning Experiments with Functional Near-Infrared Spectroscopy. J. Vis. Exp. (2019) This video demonstrates the use of functional near-infrared spectroscopy (fNIRS) to measure brain activity during social interactions. Participants engage in a coordinated task that increases activity in the prefrontal cortex, a region critical for social behavior, while the system detects changes in light absorption due to blood oxygenation. By analyzing the synchrony...
09:58
Recording Brain Activity with Ear-Electroencephalography
0 Views •
Cited by 6 •
2023
Presented here is the procedure for using the c-grid (ear-electroencephalography, sold under the name cEEGrid) for recording brain activity in and beyond the lab for extended durations. This protocol describes how to set up these arrays and how to record brain activity using them.
07:45
Recording Electrical Activity from Identified Neurons in the Intact Brain of Transgenic Fish
0 Views •
Cited by 4 •
2013
In this video, we will demonstrate how to record electrical activity from identified single neurons in a whole brain preparation, which preserves complex neural circuits. We use transgenic fish in which gonadotropin-releasing hormone (GnRH) neurons are genetically tagged with a fluorescent protein for identification in the intact brain preparation.
03:10
Optical Recording of Neuronal Activity in Brain Slices Stained with a Voltage-Sensitive Dye
0 Views •
2025
This video demonstrates a procedure for observing changes in neuronal activity in a brain slice stained with a voltage-sensitive dye. The dye reflects changes in the neuron's membrane potential by altering its fluorescence intensity. Through the application of electrical stimuli and advanced imaging techniques, this process enables visual tracking of real-time changes in neuronal membrane potential based on VSD fluorescence.
FAQs
Electrical recordings detect neural electrical activity, whereas functional magnetic resonance measurements track activity indirectly through blood-oxygen-level changes. This distinction affects how researchers interpret the data: electrical methods describe neural signaling more directly, while functional magnetic resonance connects brain activity with related physiological changes. Comparing these signal types helps investigators select measurements suited to their research question.
Sensors determine which neural or physiological changes can be measured, while data analysis reveals patterns within those measurements. Advances in both areas can improve spatial resolution, which helps distinguish activity across brain regions, and temporal resolution, which helps characterize changes across time. These improvements strengthen comparisons among behavioral conditions and experimental observations.
Examining several dimensions helps distinguish when activity changes, where those changes are associated with the brain, and under which conditions they occur. Researchers can therefore relate signal patterns to processes such as perception, movement, or cognition rather than treating a recording as a single undifferentiated measurement. This multidimensional analysis supports more precise interpretations of brain function.
Electroencephalography and intracranial electrophysiology provide measurements of electrical activity from populations of neurons, while functional magnetic resonance supplies an indirect blood-oxygen-based measure. Because these approaches capture different aspects of brain function, they offer distinct perspectives on neural activity. The choice between them depends on whether the investigation emphasizes electrical signals, physiological changes, timing, or regional patterns.
A typical workflow begins by measuring neural signals or related physiological changes, then organizing the recordings according to time, brain region, or behavioral condition. Researchers compare these measurements to identify recurring patterns associated with the process under study. The resulting patterns can be interpreted in relation to perception, movement, cognition, sleep, or disease, depending on the research design.
Researchers and clinicians use these measurements to investigate brain function in basic neuroscience, support clinical diagnosis, develop brain-computer interfaces, and evaluate therapies. Each application emphasizes different outcomes, such as identifying activity patterns associated with disease or determining whether an intervention changes recorded brain-related signals. The same general approach can therefore connect laboratory studies with clinical and technological goals.
Recordings allow investigators to compare brain-related patterns across relevant conditions, including sleep and disease. By examining changes over time, across regions, or during specific behaviors, researchers can characterize how neural function differs between conditions. These observations may support disease-focused investigation and the evaluation of therapies, while also extending basic understanding of how the brain operates.