Awake Rat Injection
Awake Rat Injection - Related Videos
03:20
Microinjection of Tetrodotoxin into the Brain of an Awake Female Rat to Inhibit Ovulation
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2025
Source: Silva, C. et al. Unraveling the Role of Discrete Areas of the Rat Brain in the Regulation of Ovulation through Reversible Inactivation by Tetrodotoxin Microinjections. J. Vis. Exp. (2020)This video demonstrates the protocol for microinjection of tetrodotoxin (TTX) into the hypothalamus of a freely moving rat to transiently inhibit neuronal activity, suppress gonadotropin-releasing hormone secretion, and prevent ovulation.
14:06
Preparation of an Awake Mouse for Recording Neural Responses and Injecting Tracers
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Cited by 26 •
2012
Electrophysiological characterization of neuronal responses is important for understanding brain function and for guiding the placement of dyes for pathway tracing. However, many studies are performed in anesthetized animals. To understand brain function without anesthetics, we developed a method to record neuronal response properties and inject dyes in awake mouse.
02:54
Juxtacellular Recording and Staining for Precise Mapping of Neural Activity in an Awake Rat
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2025
Source: Moore, J. D., et al. Juxtacellular Monitoring and Localization of Single Neurons within Sub-cortical Brain Structures of Alert, Head-restrained Rats. J. Vis. Exp. (2015)This video demonstrates the method of juxtacellular recording and staining in a restrained, awake rat. The procedure involves recording signals from neurons and injecting dye to precisely localize the recording site. This technique allows accurate mapping of neural activity to the brain's anatomical structure.
09:46
A Pressure Injection System for Investigating the Neuropharmacology of Information Processing in Awake Behaving Macaque Monkey Cortex
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Cited by 3 •
2016
Here, we show the pressure injection of neuropharmacological substances during single-cell recording in an awake, behaving macaque monkey. This procedure allows pharmacological manipulation in the direct vicinity of a cortical recording site.
06:28
Transcranial Electrical Stimulation of the Motor Cortex in an Awake Rat
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2025
Source: Fritsch, B. et al. Transcranial Electrical Brain Stimulation in Alert Rodents. J. Vis. Exp. (2017)This video demonstrates the implantation of electrodes and the application of transcranial electrical stimulation (tES) to the motor cortex of alert rats. It outlines the steps involved in electrode placement, stimulation delivery, and the resulting neuronal and microglial activation, highlighting its neurotherapeutic potential.
FAQs
Wakefulness can reveal neural and behavioral effects that anesthesia might alter, making results more physiologically relevant for studies of cognition, motivation, pain, and circuit function. Because the animal remains conscious, observed responses can be related to neural signaling and behavior in real time rather than interpreted solely through an anesthetized state.
The selected route determines whether researchers examine broader systemic effects or more localized effects. Awake rat injection can therefore be matched to the experimental question: systemic delivery supports assessment of whole-animal pharmacological or behavioral responses, whereas localized delivery focuses interpretation on a particular neural region or circuit within the study.
Controlled restraint limits movement while allowing the needle or catheter to be positioned accurately. It also supports a consistent administration procedure and helps researchers minimize distress and unnecessary handling. In neuroscience experiments, balancing physical stability with animal welfare is essential for interpreting behavioral and neural outcomes.
Anesthesia may introduce effects that complicate interpretation of neural activity or behavior. Awake rat injection avoids those anesthesia-related influences, allowing researchers to examine responses while the rat remains conscious. This distinction is particularly relevant when experiments measure cognition, motivation, pain, neural signaling, or circuit function through behaviorally expressed outcomes.
Researchers select the substance and delivery route, establish controlled restraint, position a needle or catheter, and administer the material while maintaining the rat’s wakeful state. The procedure must also minimize movement and support animal welfare. These elements provide a consistent basis for relating delivery to subsequent neural or behavioral responses.
Researchers apply this approach to connect an intervention with behaviorally expressed neuroscience outcomes. Supported examples include administering drugs, delivering tracers, examining neural signaling, and studying circuit function during cognition, motivation, pain, or other behaviors. Observations can then relate the administered material to real-time responses in a conscious animal.