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Koike Lab
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The lab explores how living bodies work through the measurement and analysis of sound waves and vibration.
AboutAbout the lab
Approaching how living bodies work through sound waves and vibration.
The Koike Lab investigates the structure and function of living bodies through the measurement and numerical analysis of sound waves and vibration.
For the ear, the lab models the peripheral auditory system, which receives sound, on a computer and simulates surgery.
It also develops measurement devices and hearing aids that help in treating ear conditions, and examination technology that detects the risk of aspiration by checking food remaining in the throat.
In agriculture, the lab studies the use of vibration transmitted through plants as a way to keep pests away without relying on pesticides.
Key terms
- Peripheral auditory system
- The organs of the ear that carry sound to the brain, from the ear canal through the middle ear and the cochlea of the inner ear
- Ossicles
- A chain of small bones in the middle ear that transmits vibration to the inner ear
- Bone conduction hearing aid
- A hearing aid that transmits sound by directly vibrating the skull
- Aspiration
- A condition in which swallowed food enters the airway
ResearchResearch themes
The lab investigates the structure and function of living bodies through the measurement and numerical analysis of sound waves and vibration, and develops measurement technologies and devices useful for treatment, as well as optimal surgical methods through numerical simulation. There are four main research themes: modeling of the ear, measurement technologies and devices for otolaryngology, agricultural technology for keeping pests away, and detection of food remaining in the throat.
*Illustrative imageFinding optimal treatments through ear modeling
The lab models the mechanism of the ear that receives sound on a computer and investigates the mechanisms of hearing. It also reproduces the conditions of ear diseases in the model, and uses it to understand the relationship with hearing loss and to propose optimal treatments.
*Illustrative imageMeasurement technologies and device development for otolaryngology
The lab develops devices such as an instrument that measures the mobility of the ossicles, a bone conduction hearing aid implanted under the skin, and a hearing test device that can be used at home. It also studies methods for testing hearing in fetuses and a system that detects the level of risk in nasal surgery.
*Illustrative imageAgriculture that keeps pests away with vibration
As a pest control technology to replace chemical pesticides, the lab is developing a method that uses vibration transmitted through the plant body to reach pests. The vibrations that insects dislike are expected to trigger avoidance behavior and to suppress egg-laying and mating.
Detecting food remaining in the throat with near-infrared light
If food remains in the piriform sinus of the throat after swallowing, it can lead to aspiration. The lab is developing a technology in which a person eats fluorescent food, and the fluorescence is detected from outside the body with near-infrared light to check for residue.
MembersFaculty
The Koike Lab consists of faculty members, faculty members from collaborating institutions, research assistants, and doctoral, master's, and undergraduate students.As of 2025
- ProfessorTakuji Koike
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “1406 Cochlea ku” https://openstax.org. / CC BY 4.0 (cropped)
- Finding optimal treatments through ear modeling: “Human ear model 01” Bjoertvedt / CC BY-SA 3.0 (cropped)
- Measurement technologies and device development for otolaryngology: “A hearing test machine” Onwuka Glory / CC0 (cropped)
- Agriculture that keeps pests away with vibration: “Plant attacked by insect” Beendy234 / CC BY-SA 4.0 (cropped)
- Related lab (Jiang Lab): “Compex Functional Electrical Stimulation (FES) Device” Crocodilesareforwimps / CC0 (cropped)
- Related lab (Masamoto Lab): “Blood vessels-3D rendering” Antonino Paolo Di Giovanna / CC BY-SA 4.0 (cropped)
- Related lab (Nomura Lab): “40kHz ultrasonic transducer” DMGualtieri / CC BY-SA 4.0 (cropped)
- Related lab (Takahashi Lab): “Mixing and mastering” Max Rayden / CC BY-SA 4.0 (cropped)
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