Transcranial magnetic stimulation system and methods
First Claim
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1. A method for stimulation of a brain region, the method comprising:
- providing a first coil having a first coil base portion for delivering current to the brain region, the first coil base portion positionable on a skull; and
a first coil return portion for carrying returning current, the first coil return portion at a distance from the first coil base portion;
providing a second coil having a second coil base portion for delivering current to the brain region, the second coil base portion positionable on a skull;
placing said first coil on the skull of a subject, such that said first coil base portion is in contact with the skull;
placing said second coil on the skull of a subject, such that said second coil base portion is in contact with the skull;
providing a first pulse to said first coil for activating said first coil at a level which is sub-threshold for stimulation of the brain region; and
providing a second pulse to said second coil for activating said second coil at a level which is sub-threshold for stimulation of the brain region, wherein said providing a second pulse to said second coil is done with an interval of at least 1 microsecond and less than 1 millisecond after an end of said provided first pulse, so as to provide a summed effect in order to stimulate the brain region.
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Abstract
A system and methods for transcranial magnetic stimulation, the system including a helmet, a positioning portion, a stimulator and a cooling system, are disclosed. The helmet includes a coil for deep brain magnetic stimulation. The coil has a base portion, and return portions, which may include a protruding return portion and a contacting return portion. The coil is designed to minimize unintended stimulation of portions of the brain, while reducing accumulation of surface charges. The coil is stimulated at several locations and/or at different times so as to focus the electrical field on a specific deep neuronal structure.
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Citations
24 Claims
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1. A method for stimulation of a brain region, the method comprising:
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providing a first coil having a first coil base portion for delivering current to the brain region, the first coil base portion positionable on a skull; and
a first coil return portion for carrying returning current, the first coil return portion at a distance from the first coil base portion;providing a second coil having a second coil base portion for delivering current to the brain region, the second coil base portion positionable on a skull; placing said first coil on the skull of a subject, such that said first coil base portion is in contact with the skull; placing said second coil on the skull of a subject, such that said second coil base portion is in contact with the skull; providing a first pulse to said first coil for activating said first coil at a level which is sub-threshold for stimulation of the brain region; and providing a second pulse to said second coil for activating said second coil at a level which is sub-threshold for stimulation of the brain region, wherein said providing a second pulse to said second coil is done with an interval of at least 1 microsecond and less than 1 millisecond after an end of said provided first pulse, so as to provide a summed effect in order to stimulate the brain region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of activating a neuronal structure, the method comprising:
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providing a coil for delivery of electrical impulses to a target area, the coil comprising a first individual member and a second individual member, said first and second individual members designed to carry current in predetermined directions; and activating said first and second individual members non-simultaneously, said activating comprising; providing a first pulse to said first individual member using a first source; and providing a second pulse to said second individual member using a second source wherein an interval between said first pulse and said second pulse is at least 1 microsecond and less than 1 millisecond. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification