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Related Concept Videos

Ethers from Alcohols: Alcohol Dehydration and Williamson Ether Synthesis02:29

Ethers from Alcohols: Alcohol Dehydration and Williamson Ether Synthesis

Overview
Ethers can be prepared from organic compounds by various methods. Some of them are discussed below,
Preparation of Ethers by Alcohol Dehydration
In this method, in the presence of protic acids, alcohol dehydrates to produce alkenes and ethers under different conditions. For example, in the presence of sulphuric acid, dehydration of ethanol at 413 K yields ethoxyethane, whereas it yields ethene at 443 K.
¹H NMR of Labile Protons: Temporal Resolution01:10

¹H NMR of Labile Protons: Temporal Resolution

Protons bonded to heteroatoms such as nitrogen and oxygen exhibit a range of chemical shift values. This is due to the varying degree of hydrogen bonding between the proton and the heteroatom in other molecules. The extent of hydrogen bonding affects the electron density around the proton, thereby giving different chemical shift values for the protons in the proton NMR spectrum.
The –OH proton in alcohols typically appears in the range of δ 2 to 5 ppm but can vary depending on the specific...
Aldehydes and Ketones with Alcohols: Hemiacetal Formation01:19

Aldehydes and Ketones with Alcohols: Hemiacetal Formation

Similar to water, alcohols can add to the carbonyl carbon of the aldehydes and ketones. The addition of one molecule of alcohol to the carbonyl compound forms the hemiacetal or half acetal. As depicted below, in a hemiacetal, the carbon is directly linked to an OH and OR group.

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Related Experiment Video

Updated: Jul 12, 2026

Visual Evoked Potential Recording in a Rat Model of Experimental Optic Nerve Demyelination
06:49

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Published on: July 29, 2015

Ethyl alcohol effect on the visual evoked potential

W Zuzewicz

    Acta Physiologica Polonica
    |January 1, 1981
    PubMed
    Summary

    Ethanol intake prolongs visual evoked potential latency in pilots. Individual reactions vary, suggesting alcohol

    Area of Science:

    • Neuroscience
    • Toxicology
    • Human Physiology

    Background:

    • Alcohol consumption is known to affect cognitive and physiological functions.
    • Understanding the neurological impact of ethanol on sensory processing is crucial, especially in professions like aviation.

    Purpose of the Study:

    • To investigate the acute effects of oral ethanol ingestion on visual evoked potentials (VEPs) in healthy pilots.
    • To characterize individual variations in VEP responses to alcohol.

    Main Methods:

    • 30 healthy pilots ingested 1 g/kg body weight of ethanol.
    • Visual evoked potentials were recorded at 30 and 60 minutes post-ingestion using an ANOPS-10 computer.
    • Analysis focused on latency and amplitude changes in occipital leads.

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    The Use of Trace Eyeblink Classical Conditioning to Assess Hippocampal Dysfunction in a Rat Model of Fetal Alcohol Spectrum Disorders
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    The Use of Trace Eyeblink Classical Conditioning to Assess Hippocampal Dysfunction in a Rat Model of Fetal Alcohol Spectrum Disorders

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    Last Updated: Jul 12, 2026

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    Main Results:

    • Ethanol ingestion led to a dose-dependent prolongation of VEP component latency.
    • VEP component amplitudes showed biphasic changes: initial increase at 30 minutes, followed by a decrease at 60 minutes.
    • Three distinct patterns of individual VEP responses to ethanol were identified.

    Conclusions:

    • Alcohol acutely affects subcortical structures involved in visual processing.
    • The neurological impact of ethanol on VEPs is phasic, with distinct individual variability.
    • These findings highlight the complex neurophysiological effects of alcohol on pilots' visual systems.