654 results about "Brain region" patented technology

A non-invasive, early stage method to obtain quantitative measures of mild cognitive impairment useful in diagnosing and following degenerative brain disease or closed head injuries by utilizing the image data from individual patient positron emission tomographic scans to construct a cognitive decline index that serves as a diagnostic and screening tool to reveal the onset of mild cognitive impairment and nervous system dysfunction which are sequelae of degenerative brain diseases and closed head injury. The method involves using weighted values of brain region intensities derived from comparing scans of normal subjects to a scan of the patient to calculate a cognitive decline index that is useful as a diagnostic tool for mild cognitive impairment. The weights for the intensity values for each region are derived from the differences of intensity values from regions of the brain of the patient selected by comparing the patient to normal control subjects.

A method for measuring indices of brain activity includes non-invasively obtaining signals of central nervous system (CNS) activity, localizing signals to specific anatomical and functional CNS regions, correlating the signals from pain and reward brain regions, and interpreting the correlation results. The results of interpreting the correlation results can be used for objectively measuring, in individual humans or animals, their responses to motivationally salient stimuli including but not limited to stimuli which are internal or external, conscious or non-conscious, pharmacological or non-pharmacological therapies, and diseased based processes. This method for measuring brain activity in reward/aversive central nervous system regions, can further be used to determine the efficacy of compounds.

Means is provided for generating a vibration or a vibration signal, which contains audible range components that are vibration components in the audible frequency range and super-highfrequency components within a range exceeding the audible frequency range up to a predetermined maximum frequency, and which has an autocorrelation order represented by at least either one of a first property and a second property. By applying the vibration or an actual vibration generated from the vibration signal to a human being, a fundamental brain activation effect for activating the fundamental brain network system constituted of a fundamental brain including the brain stem, thalamus and hypothalamus that are regions to bear the fundamental function of the human being and the fundamental brain network of neuronal projection from the fundamental brain to various brain regions is introduced.

Described herein are methods for neuromodulating brain activity of one or more target brain regions, the methods using Transcranial Magnetic Stimulation (TMS) to produce robust analgesia. In particular, described herein are systems for arranging one or more (e.g., a plurality) of TMS electromagnets in a configuration and applying sufficient energy to neuromodulate the dorsal anterior cingulate gyrus relative to cortical brain regions to significant modulate pain, including the pain of fibromyalgia.

A device for decoupling and/or desynchronizing neural, pathologically synchronous brain activity, in which, the activities in a partial region of a brain area or a functionally associated brain area are stimulated by means of an electrode, resulting in decoupling and desynchronizing the affected neuron population from the pathological area and suppression of the symptoms in a patient. In an alternative embodiment of the device, the pathologically synchronous brain activity due to the disease is desynchronized which also leads to the symptoms being suppressed. The device has a stimulation electrode and at least one sensor which are driven by a control system in such a manner that they produce decoupling and/or desynchronization in their local environment.

Methods and apparatus for temperature modification of selected body regions including an induced state of local hypothermia of the brain region for neuroprotection. A heat exchange catheter is provided with heat transfer fins projecting or extending outward from the catheter which may be inserted into selected blood vessels or body regions to transfer heat with blood or fluid in the selected blood vessels or body regions. Another aspect of the invention further provides methods and apparatus for controlling the internal body temperature of a patient. By selectively heating or cooling a portion of the catheter lying within a blood vessel, heat may be transferred to or from blood flowing within the vessel to increase or decrease whole body temperature or the temperature of a target region. Feed back from temperature sensors located within the patient's body allow for control of the heat transfer from the catheter to automatically control the temperature of the patient or of the target region within the patient. The apparatus may include a blood channeling sleeve that directs body fluid over a heat exchanger where the body fluid's temperature is altered, and then is discharged out the distal end of the sleeve to a desired location, for example, cooled blood to the brain for neuroprotection. The catheter may be used alone or in conjunction with other heat exchangers to cool one region of a patient's body while heating another.

A method is provided, including identifying an electrical stimulation protocol as being suitable for augmenting genesis of one or more cell populations in at least one brain region of the subject. The cell genesis is augmented by applying the identified stimulation protocol to an SPG, a greater palatine nerve, a branch of the greater palatine nerve, a lesser palatine nerve, a sphenopalatine nerve, a communicating branch between a maxillary nerve and an SPG, an otic ganglion, an afferent fiber going into the otic ganglion, an efferent fiber going out of the otic ganglion, an infraorbital nerve, a vidian nerve, a greater superficial petrosal nerve, a lesser deep petrosal nerve, a maxillary nerve, a branch of the maxillary nerve, a nasopalatine nerve, a peripheral site that provides direct or indirect afferent innervation to the SPG, or a peripheral site that is directly or indirectly efferently innervated by the SPG.

Methods, devices and systems for Transcranial Magnetic Stimulation (TMS) are provided for synchronous, asynchronous, or independent triggering the firing multiple of electromagnets from either a single power source or multiple energy sources. These methods are particularly useful for stimulation of deep (e.g., sub-cortical) brain regions, or for stimulation of multiple brain regions, since controlled magnetic pulses reaching the deep target location may combine to form a patterned pulse train that activates the desired volume of target tissue. Furthermore, the methods, devices and systems described herein may be used to control the rate of firing of action potentials in one or more brain regions, such as slow or fast rate rTMS. For example, described herein are multiple electromagnetic stimulation sources, each of which are activated independently to create a cumulative effect at the intersections of the electromagnetic stimulation trajectories, typically by means of a computerized calculation.

Described herein are Transcranial Magnetic Simulation (TMS) systems and methods of using them for emitting focused, or shaped, magnetic fields for TMS. In particular, described herein are arrays of TMS electromagnets comprising at least one primary (e.g., central) TMS electromagnet and a plurality of secondary (e.g., lateral or surrounding) TMS electromagnets. The secondary TMS electromagnets are arranged around the primary TMS electromagnet(s), and are typically configured to be synchronously fired with the primary TMS electromagnets. Secondary TMS electromagnets may be fired at a fraction of the power used to energize the primary TMS electromagnet to shape the resulting magnetic field. The secondary TMS electromagnets may be stimulated at opposite polarity to the primary TMS electromagnet(s). Focusing in this manner may prevent or reduce stimulation of adjacent non-target brain regions.

Provided are a stroke patient rehabilitation training system and method based on brain myoelectricity and a virtual scene. Control over the virtual rehabilitation scene is achieved through myoelectric signals, and rehabilitation training intensity is adjusted in a self-adaptation mode with a brain myoelectricity fatigue index combined. The design of the virtual rehabilitation scene is completed with the needs of stroke patient rehabilitation training and the advice of a rehabilitation physician combined, the brain fatigue index is provided, and quantitative evaluation on brain region fatigue is achieved. The surface myoelectric signal features under different motion modes of an arm are extracted, the motion intention of a patient is obtained, and control over the virtual rehabilitation scene is achieved. The muscle fatigue and brain fatigue index comprehensive features are extracted, the fatigue state of a rehabilitation patient is obtained, self-adaptation rehabilitation training scene adjusting is achieved, rehabilitation training intensity is relieved or enhanced, and secondary damage caused by improper training is avoided. The system and method have the advantages of being high in safety, high in intelligence and scientific in training, and damage cannot happen easily.

Systems, devices and methods for applying therapeutic transcranial magnetic stimulation (TMS) to at least one superficial cortical target brain region and at least one deep brain target so that the induced current points between the superficial cortical and deep brain targets. Systems may include two TMS electromagnets configured for treating a patient by stimulating at least one deep brain region with one TMS magnet at the same time that a second TMS magnet stimulates at least one superficial cortical brain region. Also described are positioners to secure at least two TMS magnets in a substantially fixed arrangement relative to the patient's head, while allowing for fine adjustment of position and orientation of each of the TMS magnets individually to conform them to the shape of the contact surface of the body and to direct the vector direction of the overall induced current from the magnets.

A method, comprising detecting, in at least a first brain region of a patient, an electrical activity relating to an epileptic activity; determining a first regularity index of said electrical activity; and applying at least one first electrical stimulation to at least one neural target of said patient for treating said epileptic event, in response to said first regularity index being within a first range. A non-transitive, computer-readable storage device for storing instructions that, when executed by a processor, perform the method. A medical device system suitable for use in the method.

Methods for measuring atrophy in a brain region occupied by the hippocampus and entorhinal cortex. In one example, MRI scans and a computational formula are used to measure the medial-temporal lobe region of the brain over a time interval. This region contains the hippocampus and the entorhinal cortex, structures allied with learning and memory. Each year this region of the brain shrank in people who developed memory problems up to six years after their first MRI scan. The method is also applicable for measuring the progression rate of atrophy in the region in an instance where the onset of Alzheimer's disease has already been established.

A method for treating essential tremor comprising the step of applying deep brain stimulation to the ascending dentate/interpositus-ventral intermedius fibres of the brain at a location remote from the ventral intermedius nucleus of the thalamus. A method for identifying an area of a patient's brain to be targeted with deep brain stimulation for the treatment of essential tremor comprising the step of using a scan of a patient's brain to identify a target area in relation to the subthalmic nucleus and the red nucleus. A method of treating essential tremor by using deep brain stimulation. A method of treating essential tumor by using a DBS electrode targeted to the dentate/interpositus-ventral intermedius fibres. A kit used in treating essential tremor.

A method of interpreting cognitive response to a stimulus is disclosed. The method includes collecting baseline neural activity data from a subject absent a stimulus. Neural activity data is collected while the subject is being stimulated through exposure to a stimulus. A unique three-dimensional cognitive engram is then plotted representative of cerebral regions of stimulated neural activity caused by the stimulus. A novel graphical representation is plotted in three dimensions to indicate the brain region response unique to that stimulus.

Methods and systems for transcranial ultrasound neuromodulation as well as targeting such neuromodulation in the brain are disclosed. Automated transcranial Doppler imaging (aTCD) of blood flow in the brain is performed and one or more 3-dimensional maps of the neurovasculature are generated. Ultrasound energy is delivered transcranially in conjunction to induce neuromodulation. One or more brain regions for neuromodulation are targeted by using brain blood vessel landmarks identified by aTCD components. The landmarks are used for initial targeting of the neuromodulation to one or more brain regions of interest and/or for maintaining neuromodulation targeting despite user or device movements. Acoustic contrast agents may be employed to generate broadband ultrasound waves locally at the site of target cells. Transcranial ultrasound neuromodulation may be achieved by having confocal ultrasound waves differing in acoustic frequency by a frequency effective for neuromodulation interfere to generate vibrational forces in the brain that induce neuromodulation.

A transcranial magnetic stimulation coil which is location-specific for medial brain regions or lateral brain regions is designed with multiple spaced apart stimulating elements having current flow in a first direction, and multiple return elements having current flow in a second direction which is opposite the first direction. The multiple stimulating elements are distributed around a central axis of the coil.

A system (10) and a method for deep brain stimulation are provided. The system (10) comprises a probe (11) and a processor (14). The probe (11) comprises an array of sensing electrodes (12) for acquiring signals representing neuronal activity at corresponding positions in a brain and an array of stimulation electrodes (12) for applying stimulation amplitudes to corresponding brain regions. The processor (14) is operably coupled to the sensing electrodes (12) and the stimulation electrodes (12) and is arranged for performing the method according to the invention. The method comprises receiving (21) the acquired signals from the sensing electrodes (12), processing (22) the acquired signals to find at least one brain region with atypical neuronal activity, based on the acquired signals determining (23) a spatial distribution of stimulation amplitudes over the array of stimulation electrodes (12), and applying (24) the spatial distribution of stimulation amplitudes to the array of stimulation electrodes (12) in order to stimulate the at least one region with atypical neuronal activity.

The invention discloses an early and late mild cognitive impairment classification method and device based on brain function network characteristics and belongs to the medical image processing technology field. According to the method, firstly, sample data is pre-processed, multiple brain region time series are extracted, the brain function network is constructed by utilizing a correlation coefficient between the Pearson's correlation calculation brain area time series, and brain network parameters are calculated; secondly, the stepwise analysis method is utilized to extract characteristics, abinary classifier is trained, corresponding characteristic vectors are extracted from to-be-classified resting state functional magnetic resonance data and are inputted to the trained binary classifier, and the medical image classification result is acquired. Compared with a method in the prior art, the method is advantaged in that classification accuracy, sensitivity and specificity are better.