By evening the brain shrinks. Free Technical Library News

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By evening the brain shrinks

17.06.2015

The size of the human brain changes during the day: in the evening it decreases, and in the morning it reaches its normal size, recovering overnight. This conclusion was made by Canadian neurologists.

The study was carried out by physicians from the Montreal Neurological Institute. The results are published in the journal Neuroimage. Experts studied 3269 tomographic images of the brains of patients with multiple sclerosis and another 6114 with Alzheimer's disease.

In the same people, the size of the brain changed during the day. In the evening, the volume of brain tissue in the cranium decreased (by 0,18% in those suffering from multiple sclerosis, and by 0,44% in the second category of participants in the experiment). Doctors suggested that during sleep, the fluid accumulated in the lower body is redistributed, filling the brain tissue and increasing its volume.

Scientists from various scientific institutions around the world have already discovered the relationship of brain size with age: it peaks at about 40 years old, starting to decrease after that. There is a study on the changes in the brain of women during the menstrual cycle. No one has previously studied the dependence of brain volume on the time of day; in addition, all previous studies considered significantly fewer examples.

The current scientific work does not answer all questions: it can be continued with the involvement of data from healthy people. At the same time, it is already useful now: first of all, in medical institutions when scheduling tomography. Due to diurnal changes in brain volume, its results may not be entirely correct.

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Texas Instruments (TI) has expanded the SafeTI family of components with two series of microcontrollers based on dual-core 32-bit ARM Cortex-R5 processors: Hercules RM57Lx and TMS570LCx.

Among the unique features of the new representatives of the Hercules platform, the manufacturer refers to the presence of floating-point units, which provide a 50% increase in computing performance compared to any other TI microcontroller currently produced. This allows you to replace several other microcontrollers or a bunch of microcontroller and FPGA with one Hercules.

Other advantages of the new products include the largest amount of built-in flash memory and RAM among other representatives of the Hercules platform. More specifically, the flash program memory is up to 4 MB and the RAM is 512 KB. An additional 128 KB of Flash is used for EEPROM emulation.

To facilitate adoption of the new microcontrollers, they are pin- and software-compatible with previously released Hercules models. TI Hercules RM57Lx and TMS570LCx microcontrollers are designed for industrial, medical and on-board electronics, as well as transport security management systems.

Price Hercules RM57Lx - from $28,32 apiece, Hercules TMS570LCx - from $32,15.

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