Download Artificial Sight: Basic Research, Biomedical Engineering, by Hossein Ameri, James D. Weiland, Mark S. Humayun (auth.), PDF

By Hossein Ameri, James D. Weiland, Mark S. Humayun (auth.), Mark S. Humayun, James D. Weiland, Gerald Chader, Elias Greenbaum (eds.)

Artificial sight is a frontier sector of recent ophthalmology combining the multidisciplinary talents of surgical ophthalmology, biomedical engineering, organic physics, and psychophysical checking out. Many clinical, engineering, and surgical demanding situations needs to be surmounted ahead of frequent sensible functions should be discovered. The objective of Artificial Sight is to summarize the state of the art study during this interesting sector, and to explain many of the present methods and tasks that can support sufferers in a medical atmosphere.

The Editors are lively researchers within the fields of synthetic sight, biomedical engineering and organic physics. they've got bought various expert awards and popularity for his or her paintings. the bogus sight workforce on the Doheny Eye Institute, led by way of Dr. Mark Humayun, is a global chief during this quarter of biomedical engineering and scientific research.

Key Features

  • Introduces and assesses the state-of-the-art for a huge viewers of biomedical engineers, biophysicists, and scientific researchers
  • Describes advances in microelectronics, microfabrication, surgical implantation, and psychophysical trying out of visible prostheses
  • Outlines the promise of man-made sight and the demanding situations that needs to be met

Show description

Read or Download Artificial Sight: Basic Research, Biomedical Engineering, and Clinical Advances PDF

Best clinical books

Clinical and Forensic Applications of Capillary Electrophoresis

Simply because capillary electrophoresis (CE) is using the automation of guide and semi-manual concepts, conserves priceless samples, and minimizes using damaging natural chemical compounds, it constitutes a strong new method for the medical laboratory. In medical and Forensic functions of Capillary Electrophoresis, John R.

Bipolar Depression: Molecular Neurobiology, Clinical Diagnosis and Pharmacotherapy

Even if our wisdom of temper issues commonly is increasing progressively, relatively little is understood approximately bipolar melancholy specifically. This publication brings jointly top clinicians and preclinical and scientific researchers to supply the main up to date information regarding the prognosis, remedy, and examine surrounding bipolar melancholy.

Progress in Catheter Ablation: Clinical Application of New Mapping and Ablation Technology

Catheter ablation is largely accredited as a good and secure type of remedy for cardiac arrhythmia. oftentimes this healing approach is taken into account because the first line of treatment if no longer the final word remedy of selection. With using radiofrequency (RF) modality; which has revolutionized the know-how from a barotraumatic, most likely injurious process utilizing excessive­ voltage, direct-current (DC) surprise to a secure and comparatively painless one; catheter ablation method now contains a really low possibility and is intensely potent for specific sorts of arrhythmia.

The Economics of Obesity: Poverty, Income Inequality and Health

Offering a desirable perception into the criteria that effect person offerings concerning consuming behavior, nutrition and different behavioral styles suitable to weight problems, this e-book bargains a brand new standpoint concerning the dating of weight problems to poverty and inequality. The authors discover a different socioeconomic version that is helping construct the framework to appreciate the factors of weight problems and its relation to well-being, technology, and economics.

Extra info for Artificial Sight: Basic Research, Biomedical Engineering, and Clinical Advances

Sample text

Direct retinal stimulation in five blind subjects (secondary to RP, AMD, or unspecified retinal degeneration from birth) with visual acuity of little or no light perception resulted in perception of phosphenes in all subjects [43]. When the retina was stimulated with intraocular probes held very close to the retina and ranging from 50 to 200 in diameter, a typical stimulus pulse of 300–800 A and 1–4 milliseconds in duration was required to elicit a phosphene. All subjects were able to localize the stimuli and give a detailed description of visual phenomena, except one subject with unspecified retinal degeneration and who had been blind since birth.

Thus, one can 36 Fujikado et al. expect that patterned STS via an array of suprachoroidal electrodes will provide patterned phosphenes to RP patients. Artificial Vision in Rabbit by STS We used rabbits to develop the surgical procedure for implanting the electrode and for the functional assessment of STS method [15]. 3a). The multichannel electrode array was then implanted into the scleral pocket and sutured with 5-0 Dacron onto the sclera just above the pocket. The counter electrode was a platinum (Pt) wire coated with polyurethane resin and exposed at the tip.

Artificial Vision 37 strip 3 mm wide, 4 mm long, and 180 m thick. The dimensions of each electrode were height above the surface = 120–130 m; diameter = 250 m; distance between electrodes = 500 rmm. Their impedance in saline was approximately 10 k at 1 kHz. The bundle of insulated leads from the microarray was also sutured at the limbus with 5-0 Dacron. , Sarasota FL USA) to the microelectrode array. The recording electrode was a screw in the skull bone above the visual cortex. 5 ms duration. The direction of the current was set for inward-flowing currents (electrode array was positive and reference electrode was negative).

Download PDF sample

Rated 4.97 of 5 – based on 19 votes