Physically, the sounds we hear around us are characterised by their frequency and loudness. But sounds have meaning for us beyond those parameters: they might be pleasant or unpleasant, threatening or reassuring, engaging and rich in information, or merely noise.
Washington D.C. [USA], Oct 31 (ANI): While it is known that the human brain is divided into two hemispheres, what is not known is that despite the two develop differently, symmetry is found in the brain of autistic people.