science

Holmes rebound phenomenon

Holmes rebound phenomenon is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Holmes rebound phenomenon rather than just read about it. In short: The Holmes rebound phenomenon is a reflex that occurs when one attempts to move a limb against resistance that is suddenly removed. When the resistance is removed, the limb will usually move a short distance in the original direction, at which point the antagonist muscles will contract, causing the muscle to yank back in the opposite direction.

Key takeaways

Holmes rebound phenomenon belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Holmes rebound phenomenon to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Holmes rebound phenomenon from memory before moving on to harder problems.

Reference excerpt

The Holmes rebound phenomenon is a reflex that occurs when one attempts to move a limb against resistance that is suddenly removed. When the resistance is removed, the limb will usually move a short distance in the original direction, at which point the antagonist muscles will contract, causing the muscle to yank back in the opposite direction. The phenomenon will be present in limbs unaffected by disease or illness, and strongly exaggerated in limbs exhibiting signs of spasticity. A complete absence of the phenomenon (that is, a failure of the antagonist muscles to contract) may indicate the presence of cerebellar disease. Therefore, an awareness of the phenomenon can assist in the diagnoses of both types of disorders. The phenomenon was first described by Gordon Morgan Holmes and Thomas Grainger Stewart in a paper published in 1904, though it was not named until a 1917 paper published by Holmes.

References

Worked examples

Example 1 — a first encounter with Holmes rebound phenomenon

Start with the simplest possible case. Write down what Holmes rebound phenomenon claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Holmes rebound phenomenon before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Holmes rebound phenomenon ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Holmes rebound phenomenon

In research: Holmes rebound phenomenon appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Holmes rebound phenomenon in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Holmes rebound phenomenon is common in secondary-school and first-year university syllabi. It links to neighbouring topics Brain disorders, Medical sign stubs, Medical signs, so understanding it makes those chapters shorter.
In everyday life: Look for Holmes rebound phenomenon outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Holmes rebound phenomenon in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Holmes rebound phenomenon means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Holmes rebound phenomenon out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Holmes rebound phenomenon in simple terms?

Why does Holmes rebound phenomenon matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Holmes rebound phenomenon?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Holmes rebound phenomenon.