Conduction Aphasia: What It Is, Why It Happens, and How It's Treated
Updated: 2 days ago
Medically reviewed by Dr. Baraa Alnahhal, MD · Last reviewed: October 2026
Quick Answer
Conduction aphasia is a rare, mild language disorder that affects your ability to repeat spoken words or phrases, while fluent conversation, understanding, reading and writing stay normal [4]. It is caused by damage to the arcuate fasciculus, usually from stroke, TBI, tumor or infection [4]. It is diagnosed with exams, imaging and language testing, and treated with speech therapy [4].
What the research says
According to PubMed, research focused on conduction aphasia itself is limited. The studies below add context rather than proof about this specific condition:
Repetition problems may involve more than the arcuate fasciculus. A 2021 study of 71 people with stroke-induced aphasia (a model trained on 50 and tested on 21) mapped brain connections linked to speech repetition problems. It identified 10 short- and long-range parieto-temporal connections, with the strongest in the supramarginal gyrus near a region called area Spt. The authors suggest these repetition problems may reflect a parietotemporal disconnection syndrome rather than damage to the arcuate fasciculus alone. (Baboyan et al., Hum Brain Mapp, 2021) 1
More speech therapy time and intensity may help after stroke. A 2025 European Stroke Organisation guideline on stroke-related aphasia rehabilitation, based on low-quality evidence, recommends a higher total speech-language therapy dose (at least 20 hours) and suggests higher intensity and frequency of therapy. It also suggests individually tailored therapy and digital and group delivery models. This guideline covers stroke-related aphasia in general, not conduction aphasia specifically. (Brady et al., Eur Stroke J, 2025) 2
Study details are from PubMed abstracts.
Key Terms Defined
Term | What It Means |
Aphasia | A language disorder caused by brain damage that affects how you produce or process language. |
Conduction aphasia | A rare, mild type of aphasia where you struggle to repeat words you hear, but comprehension and fluent speech stay intact. |
Arcuate fasciculus | The brain pathway that connects the two language processing centers; it processes language you hear and helps you produce speech. |
Broca's area | One of the brain's language processing centers, involved in producing speech. |
Wernicke's area | The other language processing center, involved in understanding language. |
Lesion | An area of damage in the brain. |
Speech-language pathologist (SLP) | A specialized provider who tests and treats language and speech skills. |
Word retrieval | Your brain's ability to find the right word to say. |
Fluency | The ability to speak smoothly and clearly. |
What Is Conduction Aphasia?
Conduction aphasia is a language disorder that affects your ability to repeat spoken words or phrases. You can still speak fluently in conversations and understand what someone else says to you. It is a rare and mild form of aphasia that can happen after an event that causes brain damage [4].
Here is what it looks like in everyday life. Say someone is giving you directions. You want to repeat the directions to make sure you understand them correctly. The sentence you want to repeat is, "The park is two blocks north and one block west." If you have conduction aphasia, you understand the meaning of this sentence, but when you try to repeat it, it might sound like, "The… um… park… north… um... west."
Conduction aphasia makes this short sentence sound choppy and unfinished. Filler words like "um" work as placeholders as you try to find the right words to say [4]. You might also substitute other similar words for the one you want to say [4]. For example, instead of "dog," you say "frog."
What Are the Symptoms of Conduction Aphasia?
The symptoms of conduction aphasia include difficulty with three main things: repeating words and phrases that someone else says to you, finding the right words to name objects (though you can identify the word you're thinking of on a list), and talking without having time to plan what you're going to say (as a result, you might substitute or mix up words in a sentence) [4].
Importantly, conduction aphasia does not affect your ability to hold a conversation, understand what someone else says to you, or read or write [4]. Yes, you can still read with conduction aphasia.
Symptom Present | Difficulty |
Repeating words and phrases | Hard to repeat what someone else says back to them |
Naming objects | Hard to find the right word, though you can pick it off a list |
Spontaneous talking | May substitute or mix up words without planning time |
Ability That Stays Intact | What It Means for You |
Holding a conversation | You can keep up a normal back-and-forth dialogue |
Understanding others | What people say to you still makes sense |
Reading | Written words are still readable and understandable |
Writing | You can still express yourself on paper |
What Causes Conduction Aphasia?
Brain damage to the connection point between the language processing areas of your brain causes conduction aphasia. The affected location is the area of your brain between Broca's area and Wernicke's area, the two language processing centers of your brain. This connection point, known as the arcuate fasciculus, is responsible for processing the language you hear and producing speech [4].
Brain damage can happen after a stroke, a traumatic brain injury (TBI), a brain tumor, or a brain infection [4] [5] [6].
Cause of Brain Damage | How It Triggers Conduction Aphasia |
Stroke | Disrupts blood flow and damages brain tissue at the language connection point |
Traumatic brain injury (TBI) | A head injury damages the pathway between language centers |
Brain tumor | Growth presses on or damages the arcuate fasciculus area |
Brain infection | Infection damages brain tissue around the language pathway |
How Is Conduction Aphasia Diagnosed?
A healthcare provider will perform a physical exam, a neurological exam, and testing to diagnose conduction aphasia. Imaging tests, like an MRI (magnetic resonance imaging) or CT scan (computed tomography scan), look for brain lesions (damage) [4] [6].
Your provider may refer you to see a speech-language pathologist (SLP). This is a specialized provider who will test your language skills, including your ability to speak (fluency), understand spoken language, repeat words or phrases, name objects, and read and write [4] [5]. You'll likely do well on this test in all areas except repetition and naming objects [4].
Diagnostic Step | What Happens |
Physical exam | General health assessment |
Neurological exam | Checks nerve and brain function |
MRI or CT scan | Looks for brain lesions (damage) at the language pathway |
SLP language testing | Tests fluency, comprehension, repetition, naming, reading, and writing |
Expected result | Strong in all areas except repetition and object naming |
How Is Conduction Aphasia Treated?
Your healthcare provider will recommend speech therapy to treat conduction aphasia [4]. During speech therapy, a speech-language pathologist will work with you to make a treatment plan to manage the symptoms that affect you. There is no one-size-fits-all treatment; your care team will create a plan specific to you [4].
Treatment may focus on speech repetition training, where you learn new techniques to accurately repeat the words or phrases you hear; word association, where you find different ways to identify objects to improve your brain's ability to find the right word to say (word retrieval); and communication skills, where you practice the skills you learned in real-world scenarios to improve your ability to speak smoothly and clearly (fluency) when you're ready [4].
If a tumor or infection causes aphasia symptoms, treating the cause with either removal surgery or medications may prevent worsening symptoms [4].
Treatment Focus | What You Work On | Goal |
Speech repetition training | New techniques to accurately repeat words or phrases you hear | Repeat language accurately |
Word association | Different ways to identify objects | Improve word retrieval (finding the right word) |
Communication skills | Practicing in real-world scenarios | Speak smoothly and clearly (fluency) |
Treat underlying cause | Removal surgery or medications (tumor or infection) | Prevent worsening symptoms |
What Can I Expect If I Have Conduction Aphasia?
Symptoms of conduction aphasia are usually mild. Most of your language skills are intact. The condition may only have a limited impact on your communication skills. You can still go to school or work (most jobs) without interruption [4].
Your symptoms may improve in the months after an injury or stroke [4]. Speech therapy can help you if symptoms don't improve over time. Your care team will create a treatment plan specific to you, since there isn't a one-size-fits-all treatment for conduction aphasia.
Can Conduction Aphasia Be Prevented?
You can't prevent all causes of conduction aphasia. You may be able to reduce your risk by managing any underlying conditions that could lead to stroke [4]. You could also wear safety equipment when participating in high-risk activities where a head injury is possible if something goes wrong [4].
When Should I See a Healthcare Provider?
Visit a healthcare provider if you have trouble repeating what others say or finding the right word to say when you need to say something [4]. A healthcare provider can help you figure out what's causing language difficulties and offer treatment specific to your needs.
Questions you may want to ask your provider include: Do I need treatment if my symptoms are mild? How often do you suggest I go to speech therapy? What does my treatment plan look like? When will I be able to repeat words?
Conclusion
Conduction aphasia is a rare and mild language disorder that affects your ability to repeat spoken words or phrases while leaving comprehension, fluent conversation, reading, and writing intact [4]. It traces back to brain damage at the arcuate fasciculus, the pathway linking your brain's two language centers, most often after a stroke, traumatic brain injury, brain tumor, or brain infection [4]. The good news is that symptoms are usually mild, often improve on their own in the months after an injury or stroke, and rarely interrupt school or most jobs [4]. When symptoms linger, speech therapy focused on repetition training and word-finding skills offers real, practical help [4].
If you're noticing trouble repeating what others say or finding the right word at the moment you need it, talk with a healthcare provider. Early evaluation helps identify the cause and build a treatment plan tailored to your needs. Learn more about speech-language support and health guidance at Rinnit.com.
Frequently Asked Questions
What exactly is conduction aphasia?
Conduction aphasia is a language disorder that affects your ability to repeat spoken words or phrases. It is a rare and mild form of aphasia that can happen after an event that causes brain damage. You can still speak fluently and understand what others say.
Is conduction aphasia the same as other types of aphasia?
No. Unlike other forms of aphasia that affect understanding or fluent speech, conduction aphasia is a mild type where the main problem is repeating words or phrases. Comprehension, conversation, reading, and writing stay intact.
Can people with conduction aphasia still talk normally?
Yes. You can still speak fluently in conversations. The difficulty shows up when you try to repeat specific words or phrases you just heard.
Can people with conduction aphasia read?
Yes, you can still read with conduction aphasia. Reading and writing are not affected.
Can people with conduction aphasia understand others?
Yes. Understanding what someone else says to you is unaffected by conduction aphasia.
Why does the repeated sentence sound choppy?
Conduction aphasia makes short sentences sound choppy and unfinished when you try to repeat them. Filler words like "um" work as placeholders as you try to find the right words to say.
Why do I substitute similar words when speaking?
You might substitute other similar words for the one you want to say. For example, instead of "dog," you might say "frog." This happens especially when talking without time to plan what you're going to say.
What are the main symptoms of conduction aphasia?
The symptoms include difficulty repeating words and phrases that someone else says, difficulty finding the right words to name objects (though you can identify the word on a list), and difficulty talking without planning time, which can lead to substituting or mixing up words.
What abilities does conduction aphasia not affect?
Conduction aphasia does not affect your ability to hold a conversation, understand what someone else says, or read or write.
What part of the brain causes conduction aphasia?
Conduction aphasia happens when there is a lesion (damage) to the area of your brain between Broca's area and Wernicke's area, the language processing centers of your brain.
What is the arcuate fasciculus?
The arcuate fasciculus is the connection point between Broca's area and Wernicke's area. It is responsible for processing the language you hear and producing speech.
What causes the brain damage behind conduction aphasia?
Brain damage can happen after a stroke, a traumatic brain injury (TBI), a brain tumor, or a brain infection.
Can a stroke cause conduction aphasia?
Yes. A stroke is one of the events that can damage the connection point between the brain's language processing areas.
Can a brain tumor cause conduction aphasia?
Yes. A brain tumor is one of the causes of the brain damage that leads to conduction aphasia.
Can a brain infection cause conduction aphasia?
Yes. A brain infection is one of the causes of the brain damage that leads to conduction aphasia.
How is conduction aphasia diagnosed?
A healthcare provider performs a physical exam, a neurological exam, and testing. Imaging tests like an MRI or CT scan look for brain lesions (damage).
What does a speech-language pathologist test for?
An SLP is a specialized provider who tests your language skills, including your ability to speak (fluency), understand spoken language, repeat words or phrases, name objects, and read and write.
What test results point to conduction aphasia?
You'll likely do well on SLP testing in all areas except repetition and naming objects.
Does conduction aphasia need imaging to diagnose?
Imaging tests like an MRI (magnetic resonance imaging) or CT scan (computed tomography scan) are used to look for brain lesions (damage).
How is conduction aphasia treated?
Your healthcare provider will recommend speech therapy. The speech-language pathologist works with you to make a treatment plan to manage the symptoms that affect you.
Is there a one-size-fits-all treatment for conduction aphasia?
No. There isn't a one-size-fits-all treatment. Your care team will create a treatment plan specific to you.
What is speech repetition training?
Speech repetition training is a speech therapy focus where you learn new techniques to accurately repeat the words or phrases you hear.
What is word association training?
Word association training is a speech therapy focus where you find different ways to identify objects to improve your brain's ability to find the right word to say (word retrieval).
What do communication skills sessions involve?
You practice the skills you learned in real-world scenarios to improve your ability to speak smoothly and clearly (fluency) when you're ready.
Can surgery treat conduction aphasia?
If a tumor or infection causes aphasia symptoms, treating the cause with removal surgery or medications may prevent worsening symptoms.
Can medications treat conduction aphasia?
If a tumor or infection causes aphasia symptoms, medications to treat the cause may prevent worsening symptoms. The aphasia itself is managed through speech therapy rather than medication.
What is the prognosis for conduction aphasia?
Symptoms are usually mild, and most of your language skills are intact. The condition may only have a limited impact on your communication skills.
Do symptoms improve after a stroke or injury?
Yes. Your symptoms may improve in the months after an injury or stroke. Speech therapy can help if symptoms don't improve over time.
Can I still go to work with conduction aphasia?
Yes. You can still go to school or work (most jobs) without interruption.
Can conduction aphasia be prevented?
You can't prevent all causes of conduction aphasia. You may be able to reduce your risk by managing underlying conditions that could lead to stroke.
Can wearing safety equipment help prevent it?
Yes. You could wear safety equipment when participating in high-risk activities where a head injury is possible if something goes wrong.
When should I see a healthcare provider?
Visit a healthcare provider if you have trouble repeating what others say or finding the right word to say when you need to say something.
What questions should I ask my provider?
Consider asking: Do I need treatment if my symptoms are mild? How often do you suggest I go to speech therapy? What does my treatment plan look like? When will I be able to repeat words?
Will conduction aphasia stop me from ordering at a restaurant?
Not in your understanding. From ordering at a restaurant to confirming instructions, you may encounter challenges repeating things, but these instances don't interfere with your ability to understand language. They may, however, prevent you from speaking confidently in social situations.
Is conduction aphasia serious?
Conduction aphasia is a rare and mild form of aphasia. Most language skills remain intact, and the impact on daily communication is usually limited.
Related Reading
References
Baboyan V, et al. Isolating the white matter circuitry of the dorsal language stream: Connectome-Symptom Mapping in stroke induced aphasia. Hum Brain Mapp. 2021;42(17):5689-5702. PMID 34469044. https://doi.org/10.1002/hbm.25647
Brady MC, et al. European Stroke Organisation (ESO) guideline on aphasia rehabilitation. Eur Stroke J. 2025;10(4):1189-1220. PMID 40401776. https://doi.org/10.1177/23969873241311025
Acharya AB, et al. Conduction Aphasia. In: StatPearls. Treasure Island (FL): StatPearls Publishing; February 25, 2024. PMID 30725691. https://www.ncbi.nlm.nih.gov/books/NBK537006/
Cleveland Clinic. Conduction Aphasia: What It Is, Causes, Symptoms & Treatment. Cleveland Clinic. Last updated October 14, 2024. https://my.clevelandclinic.org/health/diseases/conduction-aphasia
American Speech-Language-Hearing Association. Aphasia (Practice Portal). ASHA. Accessed October 15, 2026. https://www.asha.org/Practice-Portal/Clinical-Topics/Aphasia/
MedlinePlus, National Library of Medicine. Aphasia. MedlinePlus. Last updated April 22, 2024. https://medlineplus.gov/aphasia.html
Ropper AH, Samuels MA, Klein JP, Prasad S. Disorders of speech and language. In: Adams and Victor's Principles of Neurology. 12th ed. McGraw-Hill Education; 2023.
Medical disclaimer
This article is for general educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your healthcare provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay seeking care because of information you have read here.
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