Comparison of two models of electric neuro-stimulation and consequences for the design of retinal prostheses

نویسنده

  • Erich W. Schmid
چکیده

Two simple mathematical models of electric neuro-stimulation are derived and discussed. It is found that the common injected-charge model is less realistic than a model, in which a latency period, which follows after a short electric pulse, plays a role as important as the electric pulse. A stimulation signal is proposed that takes advantage of these findings and calls for experimental testing.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Electric Stimulation with Sinusoids and White Noise for Neural Prostheses

We are investigating the use of novel stimulus waveforms in neural prostheses to determine whether they can provide more precise control over the temporal and spatial pattern of elicited activity as compared to conventional pulsatile stimulation. To study this, we measured the response of retinal ganglion cells to both sinusoidal and white noise waveforms. The use of cell-attached and whole cel...

متن کامل

COMPARISON OF THE EFFECTIVENESS OF TWO METHODS OF TRANSCRANIAL DIRECT CURRENT STIMULATION (T-DCS) AND PLAY THERAPY ON ATTENTION AND PSYCHO-MOTOR FUNCTION OF CHILDREN WITH LEARNING DISABILITIES: A SEMI-EXPERIMENTAL DESIGN

Background & Aims: Learning disorder is one of the most common neuro-developmental disabilities in childhood that requires effective interventions.The aim of this study was to compare the effect of tDCS and play therapy on improving attention and psycho-motor function in children with learning disorder. Matherials & Methods: The present study was a semi-experimental (pre-test and post-test des...

متن کامل

Flexible Electrode Array for Retinal Stimulation

In this Work, ITO/PET (Indium Tin Oxide / Polyethylene Terephthalate) electrode structure which provides biocompatibility, mechanical stability and flexibility is fabricated. Flexible ITO/PET implantable electrode array for a retina has been developed. The electrode array is fabricated on a thin PET/ITO substrate and is encapsulated using, SU-8, an insulating material. PET substrate and SU-8 po...

متن کامل

Evaluation of Sensory Pathways in Spinal Cord by Comparison of fMRI Methodologies

Introduction: Today, clinicians and neuroscientists need to have a comprehensive survey of neurological pathologies and injuries. For the First-time, SEEP contrast and Spin-Echo pulse sequences was used for functional imaging of the Lumbar spinal cord. This method used by several research groups for Spinal cord mapping, but other researchers tried to improve BOLD fMRI to Spina...

متن کامل

A Case study of Performance Improvement of Femur Prosthesis

Nowadays, the placement of artificial prostheses in human skeleton, etc. is common due to different reasons such as fractures or deficiencies. Prostheses are structures that assist the performance of organs by reconstruction of some body parts through different methods to enable the organ to re-obtain its performance completely or partially and, since the use of external prostheses might lead t...

متن کامل

ذخیره 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 نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2007