# Joseph Erlanger

> American doctor (1874-1965)

**Wikidata**: [Q243532](https://www.wikidata.org/wiki/Q243532)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Joseph_Erlanger)  
**Source**: https://4ort.xyz/entity/joseph-erlanger

## Summary
Joseph Erlanger was an American physician and physiologist renowned for his groundbreaking work in nerve fiber electrophysiology. He was awarded the Nobel Prize in Physiology or Medicine in 1944, which he shared with Herbert Spencer Gasser, for their discoveries relating to the functional differentiation of nerve fibers.

## Biography
- Born: January 5, 1874
- Nationality: United States
- Education: Johns Hopkins University School of Medicine
- Known for: Electrophysiological classification of nerve fibers
- Employer(s): Johns Hopkins University, Washington University in St. Louis
- Field(s): Physiology, Neuroscience, Medicine

## Contributions
Joseph Erlanger's most significant scientific contribution was his collaborative research with Herbert Spencer Gasser, which led to the development of techniques for measuring the electrical activity of individual nerve fibers. Their work resulted in the identification and classification of different types of nerve fibers based on their conduction velocities, fundamentally advancing the understanding of neural function. This research laid the groundwork for modern neurophysiology and earned them the Nobel Prize in Physiology or Medicine in 1944.

## FAQs
### Where did Joseph Erlanger work during his career?
Joseph Erlanger was affiliated with several institutions throughout his career. He worked at Johns Hopkins University, where he conducted significant research, and later at Washington University in St. Louis, where he continued his scientific investigations in physiology.

### What major award did Joseph Erlanger receive, and why?
Joseph Erlanger received the Nobel Prize in Physiology or Medicine in 1944, which he shared with Herbert Spencer Gasser. They were awarded for their discoveries concerning the differentiation of nerve fibers and the electrical excitability of nerve cells, which revolutionized the understanding of neural function.

### What was Joseph Erlanger's educational background?
Joseph Erlanger was educated at Johns Hopkins University, specifically at the Johns Hopkins School of Medicine, where he trained to become a physician and later specialized in physiological research.

## Why They Matter
Joseph Erlanger's work fundamentally transformed the field of neuroscience by providing the first detailed electrophysiological classifications of nerve fibers. His research with Herbert Gasser enabled the scientific community to understand how different types of nerve fibers conduct electrical impulses at varying speeds, which has had lasting implications for neurology, neurosurgery, and the broader study of sensory and motor systems. Without their contributions, the development of modern diagnostic tools like nerve conduction studies and the understanding of neurological diseases would have been significantly delayed.

## Notable For
- Nobel Prize in Physiology or Medicine (1944) – Shared with Herbert Spencer Gasser for their discoveries in nerve fiber differentiation.
- Pioneering electrophysiological methods to study nerve conduction.
- Long-term academic affiliations with Johns Hopkins University and Washington University in St. Louis.
- Advancing the field of neurophysiology through rigorous experimental methodology.
- Establishing a foundational framework for understanding how nerve fibers function differently based on structure and conduction speed.

## Body
### Early Life and Education
Joseph Erlanger was born on January 5, 1874, in the United States. He pursued his medical education at Johns Hopkins University School of Medicine, an institution known for its rigorous academic and research standards. His training there laid the foundation for his future contributions to physiology and neuroscience.

### Career
Erlanger's professional career was marked by significant academic and research roles. He began his work at Johns Hopkins University, where he engaged in physiological research that would later earn international recognition. He subsequently joined Washington University in St. Louis, continuing his research in nerve physiology. These institutions provided the platforms for his most impactful scientific work.

### Scientific Contributions
Erlanger's most notable scientific achievements were in collaboration with Herbert Spencer Gasser. Together, they developed innovative techniques for studying the electrical properties of nerve fibers. Their research led to the classification of nerve fibers into distinct groups (A, B, and C) based on their conduction velocities. This work was pivotal in understanding how different nerve fibers respond to various stimuli, influencing fields such as pain research, autonomic nervous system function, and sensory physiology.

### Nobel Prize and Recognition
In 1944, Joseph Erlanger and Herbert Spencer Gasser were jointly awarded the Nobel Prize in Physiology or Medicine. The award recognized their discoveries concerning the functional differentiation of nerve fibers, which provided critical insights into the mechanisms of nerve conduction. This honor underscored the importance of their work in advancing medical science and neurophysiology.

### Legacy and Influence
Erlanger's research continues to influence modern neuroscience and clinical neurology. His contributions provided the scientific basis for the development of diagnostic tools such as nerve conduction studies, which are essential in diagnosing conditions like neuropathy and myopathy. His work also laid the groundwork for future studies in neuropharmacology and neural engineering, demonstrating the long-term impact of his scientific legacy.

### Affiliations and Memberships
Throughout his career, Joseph Erlanger was associated with prestigious institutions and organizations. He was a member of the National Academy of Sciences, the American Philosophical Society, and the German Academy of Sciences Leopoldina. These memberships reflect his standing in the scientific community and his contributions to advancing knowledge in physiology and medicine.

## References

1. Integrated Authority File
2. Great Soviet Encyclopedia (1969–1978)
3. [Source](http://www.nobelprize.org/nobel_prizes/medicine/laureates/1944/)
4. [Source](https://www.nobelprize.org/nobel_prizes/about/amounts/)
5. International Standard Name Identifier
6. Virtual International Authority File
7. NNDB
8. Encyclopædia Britannica Online
9. SNAC
10. Brockhaus Enzyklopädie
11. Gran Enciclopèdia Catalana
12. Proleksis Encyclopedia
13. Croatian Encyclopedia
14. Freebase Data Dumps. 2013
15. nobelprize.org
16. IdRef
17. CONOR.SI