Frequency Dependence of Ultrasound Neurostimulation in the Mouse Brain.
نویسندگان
چکیده
Ultrasound neuromodulation holds promise as a non-invasive technique for neuromodulation of the central nervous system. However, much remains to be determined about how the technique can be transformed into a useful technology, including the effect of ultrasound frequency. Previous studies have demonstrated neuromodulation in vivo using frequencies <1 MHz, with a trend toward improved efficacy with lower frequency. However, using higher frequencies could offer improved ultrasound spatial resolution. We investigate the ultrasound neuromodulation effects in mice at various frequencies both below and above 1 MHz. We find that frequencies up to 2.9 MHz can still be effective for generating motor responses, but we also confirm that as frequency increases, sonications require significantly more intensity to achieve equivalent efficacy. We argue that our results provide evidence that favors either a particle displacement or a cavitation-based mechanism for the phenomenon of ultrasound neuromodulation.
منابع مشابه
مقایسه نتایج بلوک اینفراکلاویکولار با دو روش تحریک عصب و سونوگرافی به اضافه تحریک عصب
Background and aims: Infraclavicular nerve block (ICNB) is one of the most efficacious peripheral nerve blocks for upper extremity procedures, associated with several potential complications. Recently, some authors have recommended ultrasound-guided peripheral nerve block for ICNB. The current study is aimed to compare the outcomes of ICNB utilizing combined ultrasound guidance and neurostimula...
متن کاملNeurostimulation as a Putative Method for Treatment of Drug-Resistant Epilepsy in Patient and Animal Models of Epilepsy
A patient with epilepsy was shown to have neurobiological, psychological, cognitive, and social issues as a result of recurring seizures, which is regarded to be a chronic brain disease.However, despite numerous drug treatments, approximately, 30–40% of all patients are resistant to antiepileptic drugs. Therefore, newer therapeutic modalities are introduced into clinical practice in which invol...
متن کاملBlood Brain Barrier Disruption by Focused Ultrasound and Microbubbles: A Numerical Study on Mechanical Effects
Introduction: Microbubbles are widely used as contrast agent in diagnostic ultrasound. Recently they have shown good potential for applications in the therapeutic field such as drug delivery to the brain. Recent studies have shown focused ultrasound in conjunction with injected micro-bubbles could temporarily disrupt blood-brain barrier and let therapeutic agents transport into...
متن کاملRemote Excitation of Neuronal Circuits Using Low-Intensity, Low-Frequency Ultrasound
Possessing the ability to noninvasively elicit brain circuit activity yields immense experimental and therapeutic power. Most currently employed neurostimulation methods rely on the somewhat invasive use of stimulating electrodes or photon-emitting devices. Due to its ability to noninvasively propagate through bone and other tissues in a focused manner, the implementation of ultrasound (US) rep...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Ultrasound in medicine & biology
دوره 42 7 شماره
صفحات -
تاریخ انتشار 2016