Cannula Attachment
Cannula Attachment - Related Videos
04:01
Cannula Implantation into the Cisterna Magna in a Mouse Model
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2025
Source: Xavier, A. L. R., et al. Cannula Implantation into the Cisterna Magna of Rodents. J. Vis. Exp. (2018)This video demonstrates the procedure for implanting a cannula into the cisterna magna of an anesthetized mouse. The technique involves guiding a needle-mounted cannula through the dura into the inverted triangular cisterna magna and securing it for targeted delivery into the cerebrospinal fluid.
01:20
Attachment
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2025
Attachment is vital for infant development, as warm social interactions support growth and well-being. In a classic 1958 study by Harry Harlow, the significance of warmth and comfort in forming attachments was examined. Harlow separated newborn monkeys from their mothers and provided two artificial "mothers": one made of cold wire and the other covered in soft cloth. Despite the wire mother offering food, the infant monkeys preferred the comfort of the cloth mother, demonstrating that physical...
02:14
Microscopy-Based Evaluation of Bacterial Attachment to Plant Root Surfaces
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2026
Source: Matthysse, A. G. Adherence of Bacteria to Plant Surfaces Measured in the Laboratory. J. Vis. Exp. (2018).This video demonstrates the evaluation of bacterial attachment to plant roots using phase-contrast microscopy. Root samples from seedlings incubated with bacteria are first mounted to check for free bacteria. The samples are then washed to remove loosely attached bacteria and remounted using a suitable coverslip to prevent damage. Finally, the number of bacteria attached to the root...
01:29
Administering Oxygen by Nasal Cannula
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2025
Oxygen therapy is critical to patient care, especially for those struggling with respiratory issues. This intervention increases the oxygen concentration in the lungs, enhancing the amount of oxygen transported to the body's tissues. One standard method of delivering supplemental oxygen is through a nasal cannula, a non-invasive device that provides low to medium oxygen concentrations. Nasal Cannulas A nasal cannula is a lightweight tube split into two prongs placed in the nostrils, connected...
01:24
Attachment Styles
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2025
Jeffrey Simpson's attachment theory suggests that early caregiver relationships shape lasting patterns of behavior and emotional regulation, known as attachment styles. These patterns are organized along two key dimensions: self-esteem and interpersonal trust. The intersection of these dimensions produces four primary attachment styles that typically persist throughout life and significantly influence how individuals form and maintain relationships.Secure Attachment StyleIndividuals with a...
FAQs
The guide cannula establishes a stable pathway to the selected nervous-system region, while an injector can later pass through it to deliver a substance. The same access arrangement can support microinfusion, sampling, or local neural recording. Separating the fixed guide from the later-use injector allows repeated experimental access without repositioning the original attachment.
Stable attachment helps preserve the intended position of the cannula across experimental sessions. Consistent placement improves targeting accuracy and reproducibility, making it easier to relate a delivered substance or local response to the selected neural region. If placement is not stable, differences between sessions may reflect access variation rather than genuine changes in neural activity or behavior.
Stereotaxic coordinates guide placement relative to the targeted nervous-system region. During attachment, they help position the guide cannula so later delivery, sampling, or recording occurs at the intended site. Accurate coordinate-based placement is therefore central to interpreting regional drug effects, local responses, and neural-circuit findings, because the experimental outcome depends on accessing the selected location.
The approach is designed to provide controlled access while limiting tissue disruption compared with repeatedly establishing access to the target region. A guide cannula remains secured, so later procedures can use the established pathway for administration, sampling, or recording. This supports repeated measurements or interventions while maintaining a consistent relationship with the targeted neural area.
The main workflow is to identify the target with stereotaxic coordinates, position the guide cannula at that site, and secure it to the skull. After attachment, an injector or related instrument can use the guide for later intracranial administration, microinfusion, sampling, or local recording. Careful placement and fixation support consistent access across the experiment.
Researchers use this approach when an experiment requires repeated intracranial access or measurements over time. The attached guide can support later substance delivery, microinfusion, sampling, or local neural recording without repeating the initial placement process. It is especially relevant to studies connecting neural-circuit manipulation or responses with drug effects and behavior.
A cannula-attached preparation can provide information about how a targeted neural region responds to local substances or how neural activity relates to behavior. Depending on the experimental use, researchers may administer compounds, perform microinfusion, collect samples, or record local responses. These outcomes help investigate neural circuits, drug effects, and behavioral consequences in awake or anesthetized animals.