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    • 3. 发明申请
    • PULSE-BASED FEATURE EXTRACTION FOR NEURAL RECORDINGS
    • 基于脉冲的神经记录特征提取
    • WO2008042900A2
    • 2008-04-10
    • PCT/US2007080190
    • 2007-10-02
    • UNIV FLORIDASHE CHRISTY LHARRIS JOHN GPRINCIPE JOSE C
    • SHE CHRISTY LHARRIS JOHN GPRINCIPE JOSE C
    • A61B5/00
    • A61B5/04001A61B5/0031A61B5/7232G06F3/015
    • A neural recording system (100) and method (400) for neural encoding is provided. The system can include an ultra-low power neural encoder (120) for compressing spikes within a neural signal (1 10) to produce a pulse train (130) and wirelessly transmitting the pulse train to a spike sorter (140). Features of the neural signal can be encoded such that the timing between pulses and the number of pulses conveys features of the spike. The neural encoder can include an Integrate and Fire (IF) neuron 230 that performs spike detection and encodes at least one spike (1 12) of the neural signal. A leakiness aspect (232) and an adaptive aspect (337) can be included with the IF circuit for combining aspects of spike detection and spike sorting for suppressing noise, keeping power consumption low, and improving signal resolution.
    • 提供了用于神经编码的神经记录系统(100)和方法(400)。 该系统可以包括用于压缩神经信号(110)内的尖峰脉冲以产生脉冲串(130)并将该脉冲串无线传输到尖峰分选器(140)的超低功率神经编码器(120)。 神经信号的特征可以被编码,使得脉冲之间的定时和脉冲数量传递尖峰的特征。 神经编码器可以包括执行尖峰检测并对神经信号的至少一个尖峰(112)进行编码的积分和火(IF)神经元230。 IF电路可以包括泄漏方面(232)和自适应方面(337),用于组合尖峰检测和尖峰排序的各个方面以抑制噪声,保持低功耗并提高信号分辨率。
    • 5. 发明申请
    • DEVICE FOR DETERMINING RESPIRATORY RATE FROM OPTOPLETHYSMOGRAM
    • 用于从OPTOPLETHYSMOGRAM确定呼吸率的装置
    • WO0021438A9
    • 2000-08-31
    • PCT/US9924195
    • 1999-10-15
    • UNIV FLORIDA
    • LAMPOTANG SAMSUNCHEN PRISCILLA LGRAVENSTEIN NIKOLAUSHARRIS JOHN G
    • A61B5/00A61B5/08
    • A61B5/14551A61B5/0816A61B5/7278
    • The invention is a system, and method for deriving the respiratory rate of an individual from the raw, unfiltered opto-plethysmograph signal output by a standard pulse oximeter. The components of the system consist of a pulse oximeter (110), and a processor device (120) that processes the opto-plethysmograph signal output from the pulse oximeter. The raw unfiltered opto-plethysmograph signals are processed to remove the high frequency heart rate, and the low frequency components from the raw signal to generate a processed signal that contains primarily the desired respiratory variations. Several feature extraction algorithms are then applied to the processed signal to identify those peaks of the processed signal that truly represent respiratory peaks. The respiratory rate is then calculated based on the identified repiratory peaks, and averaged over a predetermined number of breaths.
    • 本发明是由标准脉搏血氧计输出的未经过滤的光学体积描记器信号的个体呼吸速率的系统和方法。 该系统的组件由脉冲血氧计(110)和处理器装置(120)组成,处理器装置(120)处理从脉搏血氧计输出的光学体积描记器信号。 处理未经过滤的原始体积图仪信号以从原始信号中除去高频心率和低频分量,以产生主要包含所需呼吸变化的处理信号。 然后将几个特征提取算法应用于经处理的信号,以识别真正代表呼吸峰的处理信号的那些峰。 然后基于所识别的呼吸峰计算呼吸频率,并且在预定呼吸次数上取平均值。