Scientists' Understanding of How Segregated Ocular Dominance Columns Develop in Young

question 41

Multiple Choice

Scientists' understanding of how segregated ocular dominance columns develop in young animals relied on the development of this experimental method.

• A) Neurons in the visual system are injected with a tracer that can then be imaged in a brain slice.
• B) Electrical recordings are made in the retina while a light is projected onto the photoreceptors.
• C) Electrical recordings are made in the visual cortex while a second electrode stimulates the retina.
• D) The visual capabilities of animals are tested using a behavioral visual discrimination task.
• E) Single neurons are extracted from the visual pathway and subjected to patch-clamp recordings.

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Definitions:

Homeostasis

The ability of organisms or cells to regulate their internal environment and maintain a stable, constant condition in response to external changes.

Physiological Needs

Basic physical requirements for human survival, such as air, food, water, and shelter, as outlined in Maslow's hierarchy of needs.

Refractory Period

A period immediately following an action (like a nerve impulse or muscle contraction) during which a cell is incapable of repeating the action.

Plateau Stage

A phase in which progress in physical or intellectual growth seems to halt, before another phase of rapid development.