Spatial Occupancy Heatmaps
Spatial Occupancy Heatmaps - Related Videos
01:21
Measuring Cerebral Blood Volume in the Auditory Cortex Using Vascular Space Occupancy
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2025
Position a human participant’s head within the head coil of a functional magnetic resonance imaging, or fMRI, system.Employ vascular space occupancy or VASO, a technique to measure changes in cerebral blood volume, or CBV, the blood volume within the brain.Begin by applying an inversion recovery pulse to suppress signals from blood, allowing only signals from the surrounding tissue within the region to be detected.Next, use MRI-compatible earbuds to deliver auditory stimuli.The stimuli reach...
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Collection and Extraction of Occupational Air Samples for Analysis of Fungal DNA
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Determining the fungal diversity within an environment is a method utilized in occupational health studies to identify health hazards. This protocol describes DNA extraction from occupational air samples for amplification and sequencing of fungal ITS regions. This approach detects many fungal species that can be overlooked by traditional assessment methods.
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Spatial Molecular Imaging of the Glycome Using Mass Spectrometry
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07:51
Spatial Cueing
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2023
Source: Laboratory of Jonathan Flombaum—Johns Hopkins University Attention refers to the limited human ability to select some information for processing at the expense of other stimuli in the environment. Attention operates in all sensory modalities: vision, hearing, touch, even taste and smell. It is most often studied in the visual domain though. A common way to study visual attention is with a spatial cueing paradigm. This paradigm allows researchers to measure the consequences of focusing...
10:22
Methods to Investigate the Regulatory Role of Small RNAs and Ribosomal Occupancy of Plasmodium falciparum
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2015
Human microRNAs translocate from host erythrocytes to Plasmodium falciparum parasites. Here, the techniques used to transfect synthetic microRNAs into host erythrocytes and isolate all RNAs from P. falciparum are described. In addition, this paper will detail a method of polysome isolation in P. falciparum to determine the ribosomal occupancy and translational potential of parasite transcripts.
FAQs
Color intensity can represent either how frequently observations fall within a location or how long an individual or group remains there. These measures describe different aspects of space use, so the interpretation should match the behavioral question. Frequency can highlight repeated visits, whereas duration emphasizes sustained occupancy across the recorded environment.
The spatial distribution of occupancy can expose preferred areas, avoidance zones, and territorial patterns that may be difficult to identify from movement paths alone. Comparing the intensity and location of occupied regions helps behavioral researchers summarize where subjects concentrate their activity and recognize structured use of an environment.
Because positional observations are converted into comparable spatial summaries, researchers can examine differences in where individuals or groups spend time or how often they occupy particular regions. The same approach can also show changes in habitat use under different conditions, supporting comparisons of environmental preferences and behavioral responses.
The workflow begins with positional data collected over time within a defined environment. Each observation is assigned to a spatial bin or grid cell, after which occupancy frequency or duration is represented through color intensity. This sequence transforms time-resolved location records into a visual summary suitable for examining spatial patterns.
They are useful when researchers need to evaluate exploration, social interactions, environmental preferences, or behavioral responses through spatial patterns. A heatmap condenses many positional observations into an interpretable display, making it easier to identify concentrated or avoided regions and compare space use across subjects or conditions.
In behavior studies, the maps show how individuals or groups distribute themselves across an available environment. Researchers can use this information to identify preferred or avoided locations and assess changes in habitat use under different conditions. The resulting spatial comparison connects positional behavior with environmental selection and response.