Stereotaxic Implantation
Stereotaxic Implantation - Related Videos
08:28
Rodent Stereotaxic Surgery
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2023
Stereotaxic (or stereotactic) surgery is a method used to manipulate the brain of living animals. This technique allows researchers to accurately target deep structures within the brain through the use of a stereotaxic atlas, which provides the 3D coordinates of each area with respect to anatomical landmarks on the skull. After the skull is exposed, anesthetized animals are mounted on a specialized instrument known as a stereotaxic frame, which enables the precise placement of experimental...
00:08
Survivable Stereotaxic Surgery in Rodents
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Cited by 50 •
2008
The monitoring of extracellular neurotransmitter levels in distinct brain regions of freely moving animals offers insights on the link between neurotransmitter release and behavior. In vivo microdialysis coupled with electrochemical detection provides excellent anatomical and chemical resolution; and information on how basal neurotransmission is altered by pharmacological or physiological manipulations.
10:53
Stereotaxic Surgery for Implantation of Microelectrode Arrays in the Common Marmoset (Callithrix jacchus)
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Cited by 1 •
2019
This work presents a protocol to perform a stereotaxic, neurosurgical implantation of microelectrode arrays in the common marmoset. This method specifically enables electrophysiological recordings in freely behaving animals but can be easily adapted to any other similar neurosurgical intervention in this species (e.g., cannula for drug administration or electrodes for brain stimulation).
09:09
Dissecting the Non-human Primate Brain in Stereotaxic Space
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Cited by 14 •
2009
The non-human primate is an important translational species for our understanding of the normal processing of the brain. The anatomical organization of the primate brain can provide important insights into normal and pathological conditions in humans.
11:40
Building An Open-source Robotic Stereotaxic Instrument
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Cited by 18 •
2013
This protocol includes the designs and software necessary to upgrade an existing stereotaxic instrument to a robotic (computer numeric controlled; CNC) stereotaxic instrument for around $1,000 (excluding a drill).
FAQs
Three-dimensional coordinates translate an anatomical target into a guided instrument path. Researchers first identify relevant anatomical landmarks, then calculate the position of the target relative to those reference points. The instrument follows that planned trajectory so the implanted device reaches a localized region rather than being positioned by visual judgment alone. This coordinate-based approach supports consistent targeting across experiments.
Anatomical landmarks provide the reference system needed to relate a planned target to the subject’s anatomy. Without those reference points, calculated coordinates would not reliably correspond to the intended location. Their use helps align the frame or robotic system with the biological structure, improving placement accuracy and reducing unintended tissue disruption during insertion.
Precise placement strengthens the connection between a localized intervention and its observed result. If an electrode, cannula, probe, or other device reaches the intended site, changes in neural activity, physiology, or behavior can be interpreted with greater confidence. Consistent targeting also improves reproducibility, allowing findings from separate experiments to be compared more reliably.
A typical workflow begins by stabilizing the subject in a stereotaxic frame or robotic system. Researchers identify anatomical landmarks, determine the target’s three-dimensional coordinates, and guide the selected instrument along the calculated path. They then place the electrode, cannula, probe, or other device at the target. The procedure is designed to reach the site while limiting tissue disruption.
The implanted device should match the biological question. Electrodes support neural recording or stimulation, while cannulas enable controlled drug delivery. Probes and other devices can provide access for localized measurements or manipulations. Selecting among these options determines whether the experiment primarily measures activity, alters a target region, delivers a substance, or examines the effects of a localized intervention.
Researchers apply this technique when they need localized access to the brain or another anatomical structure during controlled experiments. It supports drug-delivery studies, neural recording and stimulation, lesion studies, and behavioral experiments. By linking a defined site with physiological or behavioral outcomes, the method helps investigate neural function and disease mechanisms at a regional level.