[Trombone-l] Glaucoma and brass playing

[Richardson, Timothy Mr. DAC USAG Ansbach DPW]

Good point, I had forgotten about the vibration-induced-aliasing effect.

I don't think that's the entire reason though.  Anybody taken their blood
pressure while playing lately?  Maybe I'll give it a shot tonight.  

-----Original Message-----
From: james meador [mailto:jamesmeador at hotmail.com] 
Sent: Thursday, November 02, 2006 2:35 AM
To: trombone-l at maillists.samford.edu; timothy.a.richardson at us.army.mil
Subject: Re: [Trombone-l] Glaucoma and brass playing 

Keep in mind when you are playing your head is vibrating.  Watch a digital 
alarm clock or a television when you play.  The numbers or the image will 
shake.  The lower you go, the more you will notice the movement because the 
vibrations are slower and wider.  I've experienced this same feeling you are

describing and I don't think it is disease related.  If I am wearing glasses

I don't notice it as much with music, but the vibrations are still visible 
if I look at a TV.

Best,
James Meador

======================
James N. Meador, Bass Trombone
Orquesta Sinfónica de Yucatán
+52-999-221-5845 cell
+52-999-195-1144 home
jamesmeador at hotmail.com

From: Richardson, Timothy Mr. DAC USAG Ansbach DPW 
<timothy.a.richardson at us.army.mil>
To: zemry1 <zemry1 at bellsouth.net>, Bone List <trombone-l at samford.edu>
Subject: Re: [Trombone-l] Glaucoma and brass playing
Sent: Wednesday, November 1, 2006 7:05 AM
This is an interesting question.

I have noticed that vision fades when I play.  I can get lined up on the
music, seem to see it well, and have it go fuzzy when I play the note.  This
effect is much less with my single vision music glasses than my bifocals,
and they have the additional benefit I can no longer see the conductor
<hee,hee>.  It happens buzzing the mouthpiece, so I doubt that switching to
bass would help much.  Consciously relaxing the forehead helps a little but
does not eliminate it.