By | 15th February 2019

 अंतरिक्ष का सफर दिमाग के लिए बुरा असर

अंतरिक्ष में इंसान के शारीर को तमाम तरह कि खतरे होते है . और जहा तक वैज्ञानिक इस बात से पहले से ही वाकिफ है .I हड्डियों और मांशपेशियो को नुकसान , आँखों के आकार और कार्य में विकृत के अलावा शून्य गुरुत्वाकर्षण सेहत को कई तरह से नुकसान पहुचता है I लेकिन एक हालिया अध्यन कि मनो तो अंतरिक्ष के माहौल का सबसे बुरा असर अंतरिक्ष यात्रियों के मस्तिष्क पर पड़ता है I वैज्ञानिक के मुताबिक अंतरिक्ष में रहते हुए इंसान के मस्तिष्क पर उम्मीद से कही ज्यादा गलत असर पड़ता है I गुरुत्वाकर्षण मस्तिष्क के आकार में बदलाव और तमाम अनियमितताओ का कारन बनता है … II

एक हालिया अध्यन से जुड़े फ्लोरिडा विस्वविद्यालय के प्रोफेसर राशेल सिद्लर के मुताबिक मस्तिष्क के ये बदलाव कुछ इसी तरह के होते है I जैसे बढती उम्र के साथ देखे जाते है . लेकिन ये काफी तेज गति से होते है I. लंबी अवधी के स्पेस फ्लाईट मिशन के दौरान मस्तिष्क में जयादा नुकसान देखे गए .I मस्तिष्क के आकार में इजाफा के साथ संतुलन में भी कमी देखि गई .I अध्यन में मस्तिष्क को पहली बार देखा गया की स्पेस फ्लाईट मस्तिष्क के व्हाइट मैटर को प्रभावित करती है .I सफ़ेद पदार्थ ज्यादातर वसा से ढके तंत्रिका तंतुओ से बना होता है . जो मस्तिष्क और तंत्रिका तंत्र के विभिन् हिस्सों के बिच सन्देश भेजता है .I वही ग्रे मैटर पर भी उल्टा असर होता है I. ग्रे मैटर मांशपेशियो के नियंत्रण और संवेदनात्मक अनुभूति में महत्वपूर्ण भूमिका निभाता है ….I

मस्तिष्क कि भीतरी प्रकिर्या में भी होता है बदलाव ; नासा ने 2010 से 2015 के दौरान 15 अंतरिक्ष यात्रियों कि प्री फ्लाईट और पोस्ट फ्लाईट डिफ्यूजन MRI स्केन कराई I. इनमे से सात ने 30 दिन से कम सयम के लिए स्पेस शटल मिशन में हिस्सा लिया था .I वाही आठ अंतरिक्ष यात्रियों ने इंटरनेशनल स्पेस स्टेसन में चलने वाली लंबी अवधी [ 200 दिन ] के मिशन में हिस्सा लिया .I अध्यन के परिणाम चौकाने वाले है ,I स्पेस फ्लाईट के चलते अंतरिक्ष यात्रियों के उपरी मस्तिष्क में तरल कि कमी देखि गई I. वाही मस्तिष्क के सतह में तरल का इजाफा हुआ I. परिणाम बताता है कि मस्तिष्क कि भीतरी प्रकिया में बदलाव होता है I देखने , चलने , और रीढ़ के संतुलन जैसे प्रकिर्याओ को संचालित करने वाले मस्तिष्क के कुछ हिस्से में व्हाइट मैटर में बदलाव देखा गया ….II





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