Intermittent Alcohol Access
Intermittent Alcohol Access - Related Videos
05:12
Chronic Intermittent Ethanol Vapor Exposure Paired with Two-Bottle Choice to Model Alcohol Use Disorder
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Cited by 6 •
2023
Presented here is a protocol for the 2BC/CIE model of alcohol dependence in mice to study alcohol use disorder.
07:50
A Method for Evaluating the Reinforcing Properties of Ethanol in Rats without Water Deprivation, Saccharin Fading or Extended Access Training
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Cited by 21 •
2017
This protocol describes a novel and efficient method to quickly initiate operant responding for ethanol in rats that, contrary to standard methods, does not require water deprivation or saccharin/sucrose fading to initiate responding.
12:19
Identifying Alcohols - Student Protocol
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2020
Source: Lara Al Hariri and Ahmed Basabrain at the University of Massachusetts Amherst, MA, USA Ferric Chloride Test for PhenolsExpand In this lab, you will identify an unknown alcohol using the ferric chloride test, the Jones test, and the Lucas test. You'll test known alcohols alongside the unknown alcohol as examples of positive and negative results for each test. The four known alcohols are 1-butanol, a primary alcohol, 2-butanol, a secondary alcohol, 2-methyl-2-propanol, a tertiary...
03:32
Identifying Alcohols - Concepts
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2020
Alcohols Alcohols are organic compounds that are amongst the most recognizable and familiar, as they have wide-ranging applications and uses in everyday life. Alcohols are organic molecules containing a hydroxyl functional group connected to an alkyl or aryl group (ROH). If the hydroxyl carbon only has a single R group, it is known as primary alcohol. If it has two R groups, it is a secondary alcohol, and if it has three R groups, it is a tertiary alcohol. Like many other organic compounds,...
07:25
Identifying Alcohols - Instructor Prep
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2020
Source: Lara Al Hariri at the University of Massachusetts Amherst, MA, USA Preparation of ReagentsExpand Here, we show the laboratory preparation for 10 students working in pairs, with some excess. Please adjust quantities as needed. Before you begin, put on a lab coat, safety glasses, and nitrile gloves, and set up a waste container for aqueous chromium, iron, and zinc waste. Note: Work in a fume hood because the reagents are acidic, toxic, and corrosive. The reagents undergo...
FAQs
Alternating alcohol exposure with alcohol-free intervals creates repeated rises and falls in blood alcohol levels rather than a single sustained exposure. This fluctuation gives researchers a way to examine how the brain responds across drinking and abstinence phases. The resulting design is especially useful for linking exposure history with later changes in motivation, stress responses, and withdrawal-related behavior.
Neural reward and stress circuits are central targets because repeated alcohol access can alter how reinforcement and stress are processed. These adaptations help explain why later alcohol-related behavior may differ from behavior during initial exposure. Studying both circuit-level changes and associated behaviors allows investigators to connect synaptic plasticity, dependence-related processes, and relapse-like outcomes.
Alcohol-free intervals are not merely gaps in exposure; they provide a period in which abstinence-related effects can be examined. Comparing behavior across access and alcohol-free phases can reveal whether repeated cycles are associated with changes in withdrawal-related behavior or stress responses. This temporal structure helps separate immediate drinking effects from adaptations that emerge after repeated exposure.
At the molecular level, the paradigm supports investigation of mechanisms that may connect repeated exposure and abstinence with altered neural function. Researchers can relate molecular findings to synaptic plasticity, reward and stress circuitry, or behavioral changes. This integrated approach helps identify candidate processes involved in dependence and relapse-like behavior, while also informing evaluation of potential treatments.
An experimental sequence begins by assigning animals scheduled alcohol-access periods and separating them with alcohol-free intervals. Investigators then examine behavior and, when relevant, neural or molecular measures across those phases. Keeping the timing of access and abstinence defined is essential because the model’s interpretive value depends on relating repeated exposure to subsequent changes in behavior and brain-related outcomes.
Measurements can include changes in alcohol consumption, motivation, stress responses, and withdrawal-related behavior, together with findings from neural or molecular analyses. Considering these outcomes together helps distinguish altered drinking from broader changes in reinforcement or stress processing. The paradigm therefore provides a framework for connecting an exposure pattern with behavioral, circuit, and mechanistic evidence.
Intermittent Alcohol Access is useful when the research question concerns repeated drinking, abstinence, dependence, or relapse-like behavior rather than exposure alone. In neuroscience studies, it can organize investigations of synaptic plasticity and reward or stress circuits around defined exposure cycles. The same framework also supports testing whether candidate treatments influence alcohol-related behavioral or molecular changes.