Guest guest Posted November 18, 2006 Report Share Posted November 18, 2006 Hi Foxx, No NZ is where I am at, yes we are on 50hz, have changed baud rates and the filters have been set to 40hz and the only thing that totally gets rid of it appears to be a really clean site, hence Nu prep. Have done all the things that Bruce from Pocket has suggested. After being in the pool for a while I can hook up on my forehead, shake my head, move around heaps and I get a clean signal all the time. Have used two different computers, a lap top and a Pc with the same results. Cheers Tony From: braintrainer [mailto:braintrainer ] On Behalf Of foxx Sent: Sunday, 19 November 2006 8:02 a.m. To: braintrainer Subject: RE: 50hz Tony, You are in Australia? Is electricity there 50 Hz? Foxx 50hz Hi Pete, Just while you are in a question answering mood, I keep getting a fifty hertz line during the assessment, have done all the things that the good people on here have advised and can eleminate it by using Nu prep on others but its very hard to do on myself. Was wondering how it actually affects the assessment as all the filters are tuned to not allow it through. Cheers Tony -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.409 / Virus Database: 268.14.7/537 - Release Date: 17/11/2006 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.409 / Virus Database: 268.14.7/537 - Release Date: 17/11/2006 Quote Link to comment Share on other sites More sharing options...
Guest guest Posted November 19, 2006 Report Share Posted November 19, 2006 Tony, What hardware are you using? This is often a much greater problem with BrainMaster amps before the Atlantis. Getting good impedances and good hookups will help reduce noise, but not if it is strong in your environment. If you are using a Pendant, set it to a bandwidth of 45 Hz (I'm working from memory here). That should minimize the effect on amplitudes, but you will get overstated coherences as a geenral rule. Pete Hi Pete,Just while you are in a question answering mood, I keep getting a fifty hertz line during the assessment, have done all the things that the good people on here have advised and can eleminate it by using Nu prep on others but its very hard to do on myself. Was wondering how it actually affects the assessment as all the filters are tuned to not allow it through.Cheers Tony -- Van Deusen pvdtlc@...http://www.brain-trainer.com305/251-0337The Learning Curve, Inc. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted November 19, 2006 Report Share Posted November 19, 2006 Pete, In the past there was some discussion of harmonics of 50 and 60 Hz showing up in the lower ranges even if the 50 and 60 Hz were filtered out. Has this been proven or disproven? Rosemary Re: 50hz Tony, What hardware are you using? This is often a much greater problem with BrainMaster amps before the Atlantis. Getting good impedances and good hookups will help reduce noise, but not if it is strong in your environment. If you are using a Pendant, set it to a bandwidth of 45 Hz (I'm working from memory here). That should minimize the effect on amplitudes, but you will get overstated coherences as a geenral rule. Pete Hi Pete,Just while you are in a question answering mood, I keep getting a fifty hertz line during the assessment, have done all the things that the good people on here have advised and can eleminate it by using Nu prep on others but its very hard to do on myself. Was wondering how it actually affects the assessment as all the filters are tuned to not allow it through.Cheers Tony-- Van Deusenpvdtlc@...http://www.brain-trainer.com305/251-0337The Learning Curve, Inc. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted November 19, 2006 Report Share Posted November 19, 2006 Yeah using a pendant, have changed the filters. Used it at work today in a room full of computers and saw no 50hz. The guy had thinning hair so I got a good contact. Cheers Tony From: braintrainer [mailto:braintrainer ] On Behalf Of Van Deusen Sent: Monday, 20 November 2006 3:22 a.m. To: braintrainer Subject: Re: 50hz Tony, What hardware are you using? This is often a much greater problem with BrainMaster amps before the Atlantis. Getting good impedances and good hookups will help reduce noise, but not if it is strong in your environment. If you are using a Pendant, set it to a bandwidth of 45 Hz (I'm working from memory here). That should minimize the effect on amplitudes, but you will get overstated coherences as a geenral rule. Pete On 11/18/06, Tony <eggezysurf (DOT) co.nz> wrote: Hi Pete, Just while you are in a question answering mood, I keep getting a fifty hertz line during the assessment, have done all the things that the good people on here have advised and can eleminate it by using Nu prep on others but its very hard to do on myself. Was wondering how it actually affects the assessment as all the filters are tuned to not allow it through. Cheers Tony -- Van Deusen pvdtlcgmail http://www.brain-trainer.com 305/251-0337 The Learning Curve, Inc. -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.409 / Virus Database: 268.14.7/537 - Release Date: 17/11/2006 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.409 / Virus Database: 268.14.7/537 - Release Date: 17/11/2006 Quote Link to comment Share on other sites More sharing options...
Guest guest Posted November 20, 2006 Report Share Posted November 20, 2006 Pete, I know we talked about it awhile back. But I still have a problem of 50Hz noise using headphone. It is better if I disconnect the power line and run it by the battery. Or when I use small earphones. Do you have any tips to offer me? Thanks Jo Sato -----Original Message-----From: braintrainer [mailto:braintrainer ] On Behalf Of Van DeusenSent: Tuesday, November 21, 2006 12:09 AMTo: braintrainer Subject: Re: 50hz Rosemary, Those would be sub-harmonics, for 60 Hz at 30, 15 and 7.5 Hz, smaller at each site. So I suppose you might see a sub-harmonic showing up at those frequencies, but the largest would be around 30. The coherence problem is by far the greatest in my experience. Pete On 11/19/06, Rosemary Herron <reherronworldnet (DOT) att.net> wrote: Pete, In the past there was some discussion of harmonics of 50 and 60 Hz showing up in the lower ranges even if the 50 and 60 Hz were filtered out. Has this been proven or disproven? Rosemary Re: 50hz Tony, What hardware are you using? This is often a much greater problem with BrainMaster amps before the Atlantis. Getting good impedances and good hookups will help reduce noise, but not if it is strong in your environment. If you are using a Pendant, set it to a bandwidth of 45 Hz (I'm working from memory here). That should minimize the effect on amplitudes, but you will get overstated coherences as a geenral rule. Pete Hi Pete,Just while you are in a question answering mood, I keep getting a fifty hertz line during the assessment, have done all the things that the good people on here have advised and can eleminate it by using Nu prep on others but its very hard to do on myself. Was wondering how it actually affects the assessment as all the filters are tuned to not allow it through.Cheers Tony-- Van Deusenpvdtlcgmailhttp://www.brain-trainer.com305/251-0337The Learning Curve, Inc. -- Van Deusenpvdtlcgmailhttp://www.brain-trainer.com305/251-0337The Learning Curve, Inc. __________ NOD32 1874 (20061120) Information __________This message was checked by NOD32 antivirus system.http://canon-sol.jp/product/nd Quote Link to comment Share on other sites More sharing options...
Guest guest Posted November 21, 2006 Report Share Posted November 21, 2006 Jo, Don't use powered headphones; especially those with noise-canceling. Regular headphones that simply plug into the computer shouldn't give you a problem. Pete Pete, I know we talked about it awhile back. But I still have a problem of 50Hz noise using headphone. It is better if I disconnect the power line and run it by the battery. Or when I use small earphones. Do you have any tips to offer me? Thanks Jo Sato -----Original Message-----From: braintrainer [mailto: braintrainer ] On Behalf Of Van DeusenSent: Tuesday, November 21, 2006 12:09 AMTo: braintrainer Subject: Re: 50hz Rosemary, Those would be sub-harmonics, for 60 Hz at 30, 15 and 7.5 Hz, smaller at each site. So I suppose you might see a sub-harmonic showing up at those frequencies, but the largest would be around 30. The coherence problem is by far the greatest in my experience. Pete On 11/19/06, Rosemary Herron <reherron@... > wrote: Pete, In the past there was some discussion of harmonics of 50 and 60 Hz showing up in the lower ranges even if the 50 and 60 Hz were filtered out. Has this been proven or disproven? Rosemary Re: 50hz Tony, What hardware are you using? This is often a much greater problem with BrainMaster amps before the Atlantis. Getting good impedances and good hookups will help reduce noise, but not if it is strong in your environment. If you are using a Pendant, set it to a bandwidth of 45 Hz (I'm working from memory here). That should minimize the effect on amplitudes, but you will get overstated coherences as a geenral rule. Pete Hi Pete,Just while you are in a question answering mood, I keep getting a fifty hertz line during the assessment, have done all the things that the good people on here have advised and can eleminate it by using Nu prep on others but its very hard to do on myself. Was wondering how it actually affects the assessment as all the filters are tuned to not allow it through.Cheers Tony -- Van Deusenpvdtlc@... http://www.brain-trainer.com305/251-0337The Learning Curve, Inc. -- Van Deusen pvdtlc@...http://www.brain-trainer.com305/251-0337The Learning Curve, Inc. __________ NOD32 1874 (20061120) Information __________This message was checked by NOD32 antivirus system. http://canon-sol.jp/product/nd -- Van Deusen pvdtlc@...http://www.brain-trainer.com305/251-0337The Learning Curve, Inc. Quote Link to comment Share on other sites More sharing options...
Guest guest Posted November 22, 2006 Report Share Posted November 22, 2006 Pete, You have given the same answer before, but I still have the same problem whatever I use, especially when the line from the headphone touch the leads. I have used many kind of headphones and earphones. Jo -----Original Message-----From: braintrainer [mailto:braintrainer ] On Behalf Of Van DeusenSent: Wednesday, November 22, 2006 1:04 AMTo: braintrainer Subject: Re: 50hz Jo, Don't use powered headphones; especially those with noise-canceling. Regular headphones that simply plug into the computer shouldn't give you a problem. Pete On 11/20/06, sato <neurofeedbackck (DOT) tnc.ne.jp> wrote: Pete, I know we talked about it awhile back. But I still have a problem of 50Hz noise using headphone. It is better if I disconnect the power line and run it by the battery. Or when I use small earphones. Do you have any tips to offer me? Thanks Jo Sato -----Original Message-----From: braintrainer [mailto: braintrainer ] On Behalf Of Van DeusenSent: Tuesday, November 21, 2006 12:09 AMTo: braintrainer Subject: Re: 50hz Rosemary, Those would be sub-harmonics, for 60 Hz at 30, 15 and 7.5 Hz, smaller at each site. So I suppose you might see a sub-harmonic showing up at those frequencies, but the largest would be around 30. The coherence problem is by far the greatest in my experience. Pete On 11/19/06, Rosemary Herron <reherronworldnet (DOT) att.net > wrote: Pete, In the past there was some discussion of harmonics of 50 and 60 Hz showing up in the lower ranges even if the 50 and 60 Hz were filtered out. Has this been proven or disproven? Rosemary Re: 50hz Tony, What hardware are you using? This is often a much greater problem with BrainMaster amps before the Atlantis. Getting good impedances and good hookups will help reduce noise, but not if it is strong in your environment. If you are using a Pendant, set it to a bandwidth of 45 Hz (I'm working from memory here). That should minimize the effect on amplitudes, but you will get overstated coherences as a geenral rule. Pete Hi Pete,Just while you are in a question answering mood, I keep getting a fifty hertz line during the assessment, have done all the things that the good people on here have advised and can eleminate it by using Nu prep on others but its very hard to do on myself. Was wondering how it actually affects the assessment as all the filters are tuned to not allow it through.Cheers Tony-- Van Deusenpvdtlcgmail http://www.brain-trainer.com305/251-0337The Learning Curve, Inc. -- Van Deusenpvdtlcgmailhttp://www.brain-trainer.com305/251-0337The Learning Curve, Inc. __________ NOD32 1874 (20061120) Information __________This message was checked by NOD32 antivirus system.http://canon-sol.jp/product/nd -- Van Deusenpvdtlcgmailhttp://www.brain-trainer.com305/251-0337The Learning Curve, Inc. __________ NOD32 1876 (20061121) ¾ðÊó __________¤³¤Î¥á¡¼¥ë¤ÏNOD32¤Ë¤è¤Ã¤Æ¸¡ºººÑ¤ß¤Ç¤¹¡£http://canon-sol.jp Quote Link to comment Share on other sites More sharing options...
Guest guest Posted November 22, 2006 Report Share Posted November 22, 2006 Not sure if this will help... But you might want to think about alternating current (AC) induction from the AC Adaptor to the Headphones...If the Headphones are close to the AC Adaptor it might be inducing an AC Signal (50Hz) into the Headphones. You might want to shield the headphones somwhow to reduce the 50Hz noise.....sato wrote: Pete, You have given the same answer before, but I still have the same problem whatever I use, especially when the line from the headphone touch the leads. I have used many kind of headphones and earphones. Jo -----Original Message-----From: braintrainer [mailto:braintrainer ] On Behalf Of Van DeusenSent: Wednesday, November 22, 2006 1:04 AMTo: braintrainer Subject: Re: 50hz Jo, Don't use powered headphones; especially those with noise-canceling. Regular headphones that simply plug into the computer shouldn't give you a problem. Pete On 11/20/06, sato <neurofeedbackck (DOT) tnc.ne.jp> wrote: Pete, I know we talked about it awhile back. But I still have a problem of 50Hz noise using headphone. It is better if I disconnect the power line and run it by the battery. Or when I use small earphones. Do you have any tips to offer me? Thanks Jo Sato -----Original Message-----From: braintrainer [mailto: braintrainer ] On Behalf Of Van DeusenSent: Tuesday, November 21, 2006 12:09 AMTo: braintrainer Subject: Re: 50hz Rosemary, Those would be sub-harmonics, for 60 Hz at 30, 15 and 7.5 Hz, smaller at each site. So I suppose you might see a sub-harmonic showing up at those frequencies, but the largest would be around 30. The coherence problem is by far the greatest in my experience. Pete On 11/19/06, Rosemary Herron <reherronworldnet (DOT) att.net > wrote: Pete, In the past there was some discussion of harmonics of 50 and 60 Hz showing up in the lower ranges even if the 50 and 60 Hz were filtered out. Has this been proven or disproven? Rosemary Re: 50hz Tony, What hardware are you using? This is often a much greater problem with BrainMaster amps before the Atlantis. Getting good impedances and good hookups will help reduce noise, but not if it is strong in your environment. If you are using a Pendant, set it to a bandwidth of 45 Hz (I'm working from memory here). That should minimize the effect on amplitudes, but you will get overstated coherences as a geenral rule. Pete Hi Pete,Just while you are in a question answering mood, I keep getting a fifty hertz line during the assessment, have done all the things that the good people on here have advised and can eleminate it by using Nu prep on others but its very hard to do on myself. Was wondering how it actually affects the assessment as all the filters are tuned to not allow it through.Cheers Tony-- Van Deusenpvdtlcgmail http://www.brain-trainer.com305/251-0337The Learning Curve, Inc. -- Van Deusenpvdtlcgmailhttp://www.brain-trainer.com305/251-0337The Learning Curve, Inc. __________ NOD32 1874 (20061120) Information __________This message was checked by NOD32 antivirus system.http://canon-sol.jp/product/nd -- Van Deusenpvdtlcgmailhttp://www.brain-trainer.com305/251-0337The Learning Curve, Inc. __________ NOD32 1876 (20061121) ¾ðÊó __________¤³¤Î¥á¡¼¥ë¤ÏNOD32¤Ë¤è¤Ã¤Æ¸¡ºººÑ¤ß¤Ç¤¹¡£http://canon-sol.jp Sponsored Link Degrees for working adults in as fast as 1 year. Bachelors, Masters, Associates. Top schools Quote Link to comment Share on other sites More sharing options...
Guest guest Posted November 22, 2006 Report Share Posted November 22, 2006 Yes, shielding the headphones wires might work. Do you know how can I shield it? Jo -----Original Message-----From: braintrainer [mailto:braintrainer ] On Behalf Of R BerrymanSent: Thursday, November 23, 2006 10:48 AMTo: braintrainer Subject: RE: 50hz Not sure if this will help... But you might want to think about alternating current (AC) induction from the AC Adaptor to the Headphones...If the Headphones are close to the AC Adaptor it might be inducing an AC Signal (50Hz) into the Headphones. You might want to shield the headphones somwhow to reduce the 50Hz noise.....sato <neurofeedbackck (DOT) tnc.ne.jp> wrote: Pete, You have given the same answer before, but I still have the same problem whatever I use, especially when the line from the headphone touch the leads. I have used many kind of headphones and earphones. Jo -----Original Message-----From: braintrainer [mailto:braintrainer ] On Behalf Of Van DeusenSent: Wednesday, November 22, 2006 1:04 AMTo: braintrainer Subject: Re: 50hz Jo, Don't use powered headphones; especially those with noise-canceling. Regular headphones that simply plug into the computer shouldn't give you a problem. Pete On 11/20/06, sato <neurofeedbackck (DOT) tnc.ne.jp> wrote: Pete, I know we talked about it awhile back. But I still have a problem of 50Hz noise using headphone. It is better if I disconnect the power line and run it by the battery. Or when I use small earphones. Do you have any tips to offer me? Thanks Jo Sato -----Original Message-----From: braintrainer [mailto: braintrainer ] On Behalf Of Van DeusenSent: Tuesday, November 21, 2006 12:09 AMTo: braintrainer Subject: Re: 50hz Rosemary, Those would be sub-harmonics, for 60 Hz at 30, 15 and 7.5 Hz, smaller at each site. So I suppose you might see a sub-harmonic showing up at those frequencies, but the largest would be around 30. The coherence problem is by far the greatest in my experience. Pete On 11/19/06, Rosemary Herron <reherronworldnet (DOT) att.net > wrote: Pete, In the past there was some discussion of harmonics of 50 and 60 Hz showing up in the lower ranges even if the 50 and 60 Hz were filtered out. Has this been proven or disproven? Rosemary Re: 50hz Tony, What hardware are you using? This is often a much greater problem with BrainMaster amps before the Atlantis. Getting good impedances and good hookups will help reduce noise, but not if it is strong in your environment. If you are using a Pendant, set it to a bandwidth of 45 Hz (I'm working from memory here). That should minimize the effect on amplitudes, but you will get overstated coherences as a geenral rule. Pete Hi Pete,Just while you are in a question answering mood, I keep getting a fifty hertz line during the assessment, have done all the things that the good people on here have advised and can eleminate it by using Nu prep on others but its very hard to do on myself. Was wondering how it actually affects the assessment as all the filters are tuned to not allow it through.Cheers Tony-- Van Deusenpvdtlcgmail http://www.brain-trainer.com305/251-0337The Learning Curve, Inc. -- Van Deusenpvdtlcgmailhttp://www.brain-trainer.com305/251-0337The Learning Curve, Inc. __________ NOD32 1874 (20061120) Information __________This message was checked by NOD32 antivirus system.http://canon-sol.jp/product/nd -- Van Deusenpvdtlcgmailhttp://www.brain-trainer.com30 5/251-0337The Learning Curve, Inc. __________ NOD32 1876 (20061121) ¾ðÊó __________¤³¤Î¥á¡¼¥ë¤ÏNOD32¤Ë¤è¤Ã¤Æ¸¡ºººÑ¤ß¤Ç¤¹¡£http://canon-sol.jp Sponsored LinkDegrees for working adults in as fast as 1 year. Bachelors, Masters, Associates. Top schools __________ NOD32 1878 (20061122) Information __________This message was checked by NOD32 antivirus system.http://canon-sol.jp/product/nd Quote Link to comment Share on other sites More sharing options...
Guest guest Posted November 22, 2006 Report Share Posted November 22, 2006 Try bringing the headphone wire up from the back of the head, so it avoids touching the leads themselves. Anything that touches the leads will cause interference. Pete Pete, You have given the same answer before, but I still have the same problem whatever I use, especially when the line from the headphone touch the leads. I have used many kind of headphones and earphones. Jo -----Original Message-----From: braintrainer [mailto: braintrainer ] On Behalf Of Van Deusen Sent: Wednesday, November 22, 2006 1:04 AMTo: braintrainer Subject: Re: 50hz Jo, Don't use powered headphones; especially those with noise-canceling. Regular headphones that simply plug into the computer shouldn't give you a problem. Pete On 11/20/06, sato <neurofeedback@... > wrote: Pete, I know we talked about it awhile back. But I still have a problem of 50Hz noise using headphone. It is better if I disconnect the power line and run it by the battery. Or when I use small earphones. Do you have any tips to offer me? Thanks Jo Sato -----Original Message-----From: braintrainer [mailto: braintraine r ] On Behalf Of Van DeusenSent: Tuesday, November 21, 2006 12:09 AMTo: braintrainer Subject: Re: 50hz Rosemary, Those would be sub-harmonics, for 60 Hz at 30, 15 and 7.5 Hz, smaller at each site. So I suppose you might see a sub-harmonic showing up at those frequencies, but the largest would be around 30. The coherence problem is by far the greatest in my experience. Pete Pete, In the past there was some discussion of harmonics of 50 and 60 Hz showing up in the lower ranges even if the 50 and 60 Hz were filtered out. Has this been proven or disproven? Rosemary Re: 50hz Tony, What hardware are you using? This is often a much greater problem with BrainMaster amps before the Atlantis. Getting good impedances and good hookups will help reduce noise, but not if it is strong in your environment. If you are using a Pendant, set it to a bandwidth of 45 Hz (I'm working from memory here). That should minimize the effect on amplitudes, but you will get overstated coherences as a geenral rule. Pete Hi Pete,Just while you are in a question answering mood, I keep getting a fifty hertz line during the assessment, have done all the things that the good people on here have advised and can eleminate it by using Nu prep on others but its very hard to do on myself. Was wondering how it actually affects the assessment as all the filters are tuned to not allow it through.Cheers Tony -- Van Deusenpvdtlc@... http://www.brain-trainer.com305/251-0337The Learning Curve, Inc. -- Van Deusen pvdtlc@...http://www.brain-trainer.com305/251-0337The Learning Curve, Inc. __________ NOD32 1874 (20061120) Information __________This message was checked by NOD32 antivirus system. http://canon-sol.jp/product/nd -- Van Deusen pvdtlc@...http://www.brain-trainer.com305/251-0337The Learning Curve, Inc. __________ NOD32 1876 (20061121) ¾ðÊó __________¤³¤Î¥á¡¼¥ë¤ÏNOD32¤Ë¤è¤Ã¤Æ¸¡ºººÑ¤ß¤Ç¤¹¡£http://canon-sol.jp -- Van Deusen pvdtlc@...http://www.brain-trainer.com305/251-0337The Learning Curve, Inc. Quote Link to comment Share on other sites More sharing options...
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