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48 results about "Facial hair" patented technology

Facial hair is hair grown on the face, usually on the chin, cheeks, and upper lip region. It is typically a secondary sex characteristic of human males. Men typically start developing facial hair in the later years of puberty or adolescence, between seventeen and twenty years of age, and most do not finish developing a full adult beard until their early twenties or later. This varies, as boys may first develop facial hair between fourteen and sixteen years of age, and boys as young as eleven have been known to develop facial hair. Women are also capable of developing facial hair, especially after menopause, though typically significantly less than men. Men may style their facial hair into beards, moustaches, goatees or sideburns; many others completely shave their facial hair and this is referred to as being "clean-shaven". The term whiskers, when used to refer to human facial hair, indicates the hair on the chin and cheeks.

Electrical stimulation method for observing rat craniotomy motor cortex with adjustable waveform and amplitude

The present invention discloses an electrical stimulation method for observing rat craniotomy motor cortex with the adjustable waveform and amplitude. The method is characterized in that: the motor area of the cerebral cortex is an advanced nerve center for regulating the body motor function, and, through the downward pathway of the pyramidal and extrapyramidal system, controls activities of the brain stem and spinal motor neurons, so as to control muscle movement. Corresponding effects occur after cortical electrical stimulation, experimenters attempt to, through the electrical stimulation of the motor area of the cerebral cortex, cause the effect of body movement, and observe the phenomenon of functional localization of the motor area of the cortex. The rat is fixed to a stereotaxic apparatus, the bone windows are opened, a cortical electrical stimulation using microelectrode is performed, and the electrode is inserted vertically into the position 1.8 mm below the cortex, and adjusted within a range of +/- 200 um so as to cause the maximum movement of the contralateral forelimb, facial hair and neck corresponding to the stimulation points. An electrical stimulator with the adjustable waveform and amplitude is further produced, is capable of accurately completing the experimental observation of electrical stimulation predetermined by experimenters, and provides technical support for the experiment.
Owner:杨旭明 +1
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