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Related Concept Videos

Masking and Demasking Agents01:19

Masking and Demasking Agents

3.2K
EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...
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Backward and forward masking in Macaca mulatta.

A V Harris

    Folia Primatologica; International Journal of Primatology
    |January 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

    This study explored visual masking in rhesus monkeys, finding they could perform tasks without linguistic confounds. Backward masking showed a stronger effect than forward masking in these non-human primates.

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    Area of Science:

    • Cognitive Neuroscience
    • Primate Behavior
    • Sensory Perception

    Background:

    • Studying perception in non-human primates is crucial for understanding cognitive processes.
    • Previous research often relies on linguistic tasks, limiting insights into non-linguistic perception.
    • Unrestrained animal models offer more naturalistic behavioral data.

    Purpose of the Study:

    • To assess the feasibility of studying visual masking in unrestrained rhesus monkeys.
    • To investigate perceptual phenomena without the influence of linguistic variables.
    • To compare backward and forward masking effects in primates.

    Main Methods:

    • Eight highly trained rhesus monkeys participated in the study.
    • Behavioral responses were recorded under backward and forward masking paradigms.
    • The experimental setup allowed for observation in unrestrained conditions.

    Main Results:

    • Monkeys demonstrated the ability to respond effectively under the experimental conditions.
    • The masking stimulus had a more pronounced effect on backward masking compared to forward masking.
    • Data suggests successful implementation of non-linguistic perceptual tasks in monkeys.

    Conclusions:

    • Visual masking paradigms are feasible for studying perception in unrestrained rhesus monkeys.
    • This methodology allows for the investigation of cognitive processes devoid of linguistic confounds.
    • Backward masking appears to be a more potent perceptual phenomenon than forward masking in this species.