A landmark neurobiology study published in the journal Brain Structure and Function titled "Is silence golden?

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"Is silence golden?," a landmark neurobiology study published in Brain Structure and Function (online December 2013, print 2015, Volume 220, Issue 2), effects of auditory stimuli or their absence on adult hippocampal neurogenesis," which was carried out by the principal investigator, Dr. Imke Kirste and coworkers (including Tara L., Golo Kronenberg, and Zeina Nicola) C. Walker, Robert In contrast to other auditory exposures, Liu and Gerd Kempermann of Duke University Medical School and the Center for Regenerative Therapies Dresden discovered that two hours of daily complete silence triggered significant and long-lasting adult hippocampal neurogenesis in mice. Adults were used in this carefully controlled experiment. 

White noise, pup calls (natural mouse communication sounds), Mozart piano music (Sonata for Two Pianos, KV 448, frequency-adjusted for mice), or complete silence (intended as the negative control) were played to C57BL/6 lab mice that were kept in standard facility ambient noise. The team discovered that while the majority of novel stimuli (pup calls, Mozart, and silence) initially boosted cell proliferation after 24 hours, only the silence group exhibited sustained survival of these new cells after seven days. They used Brdu labeling to track newly dividing cells and NeuN labeling to confirm neuronal differentiation.

Writer: Binod Kumar Simkhada 
binodkumarsimkhada315@gmail.com
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