Title

The effect of inaudible high frequency sounds ranging from 20 - 22 kilohertz on visual accuracy in Homo sapiens.

Author(s)

Matthew A. Reupke

School Name

Spring Valley High School

Grade Level

10th Grade

Presentation Topic

Physiology and Health

Presentation Type

Non-Mentored

Abstract

This study was conducted in order to determine if inaudible high-frequencies have any effect on the human brain. A reaction was found to take place in the thalamus, which is the reception center for the senses of touch, taste, sight and sound. The hypothesis was that if teenage Homo sapiens listened to inaudible frequencies from 20 kilohertz to 22 kilohertz, then there would be greater visual inaccuracy at the 22 kilohertz frequency. The subjects were randomly assigned a number and tested individually. The control was a visual accuracy of 20/20. The first experimental trial used the twenty kilohertz inaudible frequency played with sound from a background environment, the classrooms on either side of the testing environment. The remaining tests increased at an interval of five hundred hertz per test, until the frequency reached twenty-two kilohertz. The ANOVA showed that F(6,188)=6.45, p=0.000. The p-value was less than a=0.05, meaning that there was a significant difference between the frequencies and the number of letters that were missed on the Snellen Chart. A Tukey test was run and it was found that the control test is significant with the no sound and 20 kHz tests, the no sound test was significant with the 21 kHz, 21.5 kHz and the 22 kHz. The 20 kHz test was significant with the 21 and 22 kHz tests. Inaudible high-frequency sounds do not have an effect on the visual accuracy of a Homo sapien.

Start Date

4-11-2015 10:30 AM

End Date

4-11-2015 10:45 AM

COinS
 
Apr 11th, 10:30 AM Apr 11th, 10:45 AM

The effect of inaudible high frequency sounds ranging from 20 - 22 kilohertz on visual accuracy in Homo sapiens.

This study was conducted in order to determine if inaudible high-frequencies have any effect on the human brain. A reaction was found to take place in the thalamus, which is the reception center for the senses of touch, taste, sight and sound. The hypothesis was that if teenage Homo sapiens listened to inaudible frequencies from 20 kilohertz to 22 kilohertz, then there would be greater visual inaccuracy at the 22 kilohertz frequency. The subjects were randomly assigned a number and tested individually. The control was a visual accuracy of 20/20. The first experimental trial used the twenty kilohertz inaudible frequency played with sound from a background environment, the classrooms on either side of the testing environment. The remaining tests increased at an interval of five hundred hertz per test, until the frequency reached twenty-two kilohertz. The ANOVA showed that F(6,188)=6.45, p=0.000. The p-value was less than a=0.05, meaning that there was a significant difference between the frequencies and the number of letters that were missed on the Snellen Chart. A Tukey test was run and it was found that the control test is significant with the no sound and 20 kHz tests, the no sound test was significant with the 21 kHz, 21.5 kHz and the 22 kHz. The 20 kHz test was significant with the 21 and 22 kHz tests. Inaudible high-frequency sounds do not have an effect on the visual accuracy of a Homo sapien.