মানবদেহের ৫ টি জিনিস যাকে বিজ্ঞান এখনও জানতে পারেনি || Things Your Body Does That Science Still Can't Explain


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Hypnic jerk : A hypnic jerk, hypnagogic jerk, sleep start, sleep twitch, myoclonic jerk or night start is a brief and sudden involuntary contraction of the muscles of the body which occurs when a person is beginning to fall asleep, often causing the person to jump and awaken suddenly for a moment.


Placebo effect : A placebo is an inert substance or treatment which is designed to have no therapeutic value. Common placebos include inert tablets, inert injections, sham surgery, and other procedures.


Déjà vu effect : Déjà vu is most strongly associated with temporal lobe epilepsy. This experience is a neurological anomaly related to epileptic electrical discharge in the brain, creating a strong sensation that an event or experience currently being experienced has already been experienced in the past.

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