Negative Contrast Agents

question 10

Multiple Choice

Negative contrast agents

• A) are opaque to the transmission of X-rays.
• B) have low atomic numbers.
• C) provide high X-ray beam attenuation and absorption.
• D) are materials such as bone and metal.

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Definitions:

Brown-Peterson Task

A cognitive task used to study short-term memory by distracting participants with a task immediately after they are given information to remember, therefore testing their ability to maintain it in memory.

Short-Term Memory

The ability to keep a limited amount of data in an immediately accessible condition for a brief duration.

Recall Performance

The ability to remember and retrieve information that has been previously learned or experienced.

Baddeley's Model

A framework explaining human memory wherein it's divided into three main components: the central executive, the phonological loop, and the visuospatial sketchpad, with a later addition of the episodic buffer.