A key challenge in Functional Magnetic Resonance Imaging (fMRI) is the detection of activation areas in the brain. We introduce a new method of M R I signal detection, using an approach termed the Periodicity Transform. The technique is based on temporal data analysis. A search for periodicity is camed out in the tMRI time series data. The method is applicable to block design experiments. In the block paradigm, the stimulus period is known and it is possible to use this information for searching periodicities in the time series data. We present the results for the periodicity detection in the time series of the simulated phantom as well as clinical fMR1 data from the finger tapping experiment. No assumptions have been made about the amplitude and frequency of the activation signal. The algorithm extracts arbitrary harmonics at the periodicity defined by thc stimulus function.

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Palm vein technology is the upcoming technology that is extremely secure and unique because one cannot forged the pattern of veins. No doubt there are numerous biometric recognition techniques such as palm vein, iris, fingerprint, retina etc., which will be used as biometric identifiers to confirm the human's identity, but those methods didn't produce satisfactory results, so we need a technology that secure our information more efficiently from an unauthorized access. This paper presents an analysis of palm vein pattern recognition, its development, principle & general framework of palm and finger vein recognition, its techniques, its applications, and advantages of using this technology.