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Seniors: Getting Young Again by Boosting the Brain

with Audio-Visual Entrainment

David Sieveri, Edmonton, Alberta, Canada (2005) Revised: (2015)

Abstract: As the majority of the North American population continues to age, cognitive decline in older adults is becoming an ever-growing concern. With the increase in age comes a decrease in cerebral blood flow, slowing of the brain’s alpha rhythm and increased theta activity. These changes correlate with reduced cognition, spanning memory, problem solving ability, difficulty with language and speech, and locomotion. Chronic stress impairs hippocampal function leading to a host of disorders including Alzheimer’s disease. The left hemisphere of the brain has a tendency to loose functionality before the right side, which may enhance spatial creativity and when coupled with fears and feelings of helplessness, may also bring forth depression. Preliminary studies of Audio-visual entrainment (AVE) have shown this technique to be promising in the treatment of age-related issues common with our senior citizens. AVE is proving to rehabilitate cognitive function in seniors and the best application of AVE may be that as a prophylactic against cognitive decline.

Introduction

Cognitive decline and dementia in aging adults is an ever-growing problem, not only because the numbers of older adults are expanding, but longer life increases the likelihood of loss of memory and decline in cognitive performance (dementia). The Diagnostic and Statistical Manual of Mental Disorders (DSM IV) describes dementia in this basic statement: The essential feature of a dementia is the development of multiple cognitive deficits that include memory impairment and one or more of the following cognitive disturbances: aphasia, (impaired ability to use and comprehend words); apraxia (brain originated difficulty moving parts of the mouth, tongue or lips with impaired speech); agnosia (difficulty recognizing shapes or copying drawings) or a disturbance in executive functioning (logical thinking). The cognitive deficits must be severe enough to cause impairment in occupational or social functioning and must represent a decline from a previously higher level of functioning. (American Psychiatric Association, 1994, p. 134).

Dementia in both the more common ischemic vascular dementia (IVD) and dementia of the Alzheimer’s type (DAT) increase linearly with increasing age (Mohs, et al., 1987; Rocca, et al., 1991) to the point where these dementias have become epidemic within our aging population (Fratiglioni, et al., 1991; Bachman, et al., 1992). Mortel and his colleagues (1994) states, “The pathogenesis of DAT appears to be largely determined and characterized by beta amyloid deposits, neurofibrilliary tangles, and neuritic plaques that impair cortical and sub-cortical synaptic function.” Their study also found that in the IVD population, hypertension and smoking are roughly 1.5 times that of normal, heart disease is double and diabetes is triple that of normal. In the DAT population, hypertension is roughly 2/3 that of normal and heart disease is ½ that of normal. DAT has also been characterized as a “hippocampal dementia” and autopsies have revealed a high correlation of excessive theta brain wave activity with neuronal loss in the hippocampi (Rae-Grant et al, 1987).

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Here Cometh the Rain Man

Some of those with autism have brilliant skills known as savant abilities. The skills they possess are the aftermath of left brain damage or dysfunction from fetal testosterone or other damage and are therefore typically confined to right brain functioning, which includes music, math, art and other spatial abilities. Some can play complete concertos after hearing them only once. Others have memorized every name in the phone book or every highway in the USA or draw pictures of amazing detail after just a brief exposure to a scene. Some have brilliant knowledge of sports trivia or license plate numbers. Although these skills are intrinsically tied to a remarkable, specific memory, savants with them lack an understanding of any meaning or reasoning as to what they are doing.

And there may be a little “Rain Man” in all of us because, like autistic savants, as some seniors develop certain types of dementia, they become brilliant with artistic and musical abilities (Treffert & Wallace, 2002; Miller, et al., 1998). Neurons in the left temporal and frontal lobes (frontotemporal dementia) appear to be more delicate than those in the right and often take the “hit” sooner in life, allowing the right hemisphere to take control, and like autistic savants, leave the inflicted with a loss of reasoning ability but heightened artistic and musical ability (Treffert

  • Wallace, 2002). These seniors paint magnificent drawings or play concertos even though they have never had these abilities before. Unfortunately, as dementia spreads into the right brain, these skills eventually disappear, leaving the person in a withered condition.

Haunted By the Past

The American Psychiatric Association defines psychological trauma as a threat to life, to yourself or someone close to you accompanied by intense fear, horror or helplessness. Psychological trauma affects about half of all Americans sometime in their lives. Every year, in the USA, more than 1 million children are confirmed as victims of child abuse (Teicher, M., 2002). Close to 50 million American adults have been abused in childhood alone, not to mention adult traumas, leaving about 30 million Americans with posttraumatic stress disorder (PTSD), making it one of the most common illnesses in the USA (Bremner, 2002). A full 8% of Americans have a history of PTSD related to a wide variety of incidents including child abuse, assault, rape, car accidents, natural disasters, etc. (Kessler, et al, 1995). There are roughly tenfold more civilian Americans suffering from trauma and PTSD than those with combat trauma in military personnel.

While acute (mild) stress seems to enhance mental function, chronic (severe) stress impairs hippocampal function, which in turn, may lead to multiple sclerosis, anxiety, depression, posttraumatic stress disorder, schizophrenia and Alzheimer’s disease (Esch, et al., 2002). Both Vietnam war-vets and women with abuse-related PTSD have reduced blood flow in the hippocampus and medial prefrontal cortex (Bremner, et al, 1999). People with PTSD do not have normal activation of the prefrontal medial cortex and are not able to extinguish their own fear responses while watching a movie involving violence (Bremner, et al., 1997), whereas people without PTSD are able to rationalize that they are only watching a movie and do not show a

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trauma response to the movie. What this means is that those with PTSD live in an irrational and constant state of fear.

Fear also inflicts continued damage to the frontal and temporal regions, known as frontotemporal dementia (Bremner, 2002). Frontotemporal damage impairs the ability to control fear and the ability to reason and understand the significance of events in their lives (Bremner, 2002), leaving the inflicted in a generalized state of anxiety, fear and confusion. Anxiety and fear increases cortisol in the brain. Cortisol counteracts a brain-nourishing hormone called brain-derived neurotrophic factor or BDNF (Bremner, 2002). Loss of BDNF leads to neuronal cell death within the hippocampus, which impairs memory. As mentioned above, hippocampal loss plays a major role in the development of DAT in which the ability to form memories is impaired. In fact, those inflicted with PTSD often cannot remember what they had for breakfast a few hours before and have extreme difficulty learning new things. Unfortunately, PTSD inflicted dementia can affect persons as young as teenagers and up (Bremner, 2002). Seniors who live in fear suffer early onset dementia.

In relation to fear, a 1996 study by Levy revealed that when seniors were given subconscious cues which activated positive stereotypes of aging, their memory and self-reliance in remembering improved and when they were given negative subconscious cues, their memory and self-reliance in remembering worsened. What most influenced their response however, was the degree of importance that stereotyping was to their self-image – a negative stereotype activated fears within them and impaired their memory and self-reliance in remembering. Those who weren’t concerned about self-image didn’t respond either way.

I’m Falling for You (or anything near the floor) Baby

Falls involving both seniors and children account for approximately 24% of the 147 million emergency room visits logged every year (Burt & Fingerhut, 1998) and with 7 million annual falls involving seniors over the age of 65 years (Jacobson, 2001; Zaida & Alexander, 2001) with costs soaring as high as $12.4 billion annually within the USA (National Safety Council, 1996).

Compared with children, however, seniors are 10 times more likely to be hospitalized and eight times more likely to die as a direct result of their fall (Runge, 1993). In fact, falls are the leading cause of injuries and injury-related deaths among persons aged 65 and older (Fife & Barancik, 1985; Hoyert, et. al., 1999). Falls are the cause of 95% of hip fractures in senior women (Stevens

  • Olsen, 1999). Hip fractures in turn are associated with decreased mobility, onset of depression (Scaf-Klomp, et al., 2003), diminished quality of life, and premature death (Zuckerman, 1996). Older age, depression, and gait or balance impairments are primary factors for inability to get up after a fall (Colon-Emeric, 2002). In summary, falls involving seniors come at great emotional and financial cost in those communities where an abundance of seniors reside.

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Brain Waves and Dementia

The brain generates four basic brain waves: delta, theta, alpha and beta. Beta brain waves are in the frequency range of 13 to 35 Hz. For the purpose of this article we will consider beta activity in the frequency range of approximately 13 to 20 Hz. This beta activity is associated with a focused, analytic, thinking state (Demos, 2005). Beta activity is more prevalent in the frontal regions where higher levels of cognitive thought and reasoning take place.

Theta brain waves are in the 4 to 7 Hz range. Theta activity is associated with creativity and daydreaming, but also with distractibility, inattention and emotional disorders (Demos, 2005). Theta is the primary abnormal brain wave of children with ADHD. Normal theta/beta ratios for children are in the range of 2.5 to 1 and 2 to 1 in adults. Heightened theta/beta ratios are coincident with slow brain wave disorders and associated with foggy thinking, slow reaction times, difficulty with calculations, poor judgment and impulse control (Demos, 2005).

Delta brain waves are primarily related to sleep and therefore make up 40% of all brain wave activity in babies and only 5% of activity in adults. High amplitude, rhythmic delta activity is associated with traumatic brain injury (Demos, 2005).

Many brain wave studies have confirmed a natural slowing of alpha activity with age, which is associated with a shorter life (Nakano, 1992). It has also been shown that an increase in overall theta activity is the best and earliest indicator of cognitive decline (Prichep, et al., 1994).

The Geriatric Deterioration Scale (GDS) is a seven-stage subjective assessment of DAT. Stage 1 represents the best cognitive function while higher stages represent increases in dementia up to Stage 7, which reflects severe DAT. Prichep found a direct and linear correlation between progressive increases in theta and increases in severity of cognitive decline as measured on the GDS from stages 2 through 5. The severest stages of cognitive decline (stages 6 and 7) correlated highly with additional increases in delta, the slowest brain wave rhythm (normally associated with sleep or severe brain damage. The regions in the brain with the highest increases in theta carved a temporoparietal arc across the head.

Cerebral Blood Flow

Cerebral blood flow (CBF) has been shown to decline fairly linearly with age (Hagstadius & Risberg, 1989) and with men having less CBF than women (Gur, et al, 1987) as shown in Figure

  1. Both IVD and DAT groups have roughly 4% less cerebral blood flow (62 ml/100g of brain weight/minute vs 67 ml/100g of brain weight/minute) than controls (Mortel, et al., 1994). Hirsch, et al (1997) in a study of 45 seniors with DAT, found that the majority of blood flow deficits were in both left and right temporoparietal regions. When the left side was affected, language impairments developed and when the right side was affected, there were impairments in praxis (the ability to be proficient in doing normal, habitual activities).

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Figure 1. CBF Declining with Age

Entrainment and Dementia

Visual entrainment (VE) is affected by dementia. Visual entrainment normally has its greatest impact at the natural alpha frequency, which is typically about 10 Hz (Siever, 2003). Dementia causes a downward skew in the peak brain wave frequency, which in turn also causes a slowed frequency response to VE (Politoff, et al., 1992). However, despite this downward shift, VE nonetheless, affects a wide range of brain wave activity (Politoff, et al., 1992), making it a viable method for reducing aberrant dementia related brain wave activity.

VE also produces increases in cerebral blood flow, which would seem to be beneficial since dementia involves a reduction in cerebral blood flow. Figure 2 shows the impact of VE on cerebral blood flow in response to various frequencies (Fox & Raichle, 1985).

Figure 2

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Studies Utilizing Audio-Visual Entrainment (AVE) for Improving Cognitive Ability and Balance

One of the first studies utilizing AVE for improving cognition in a senior was by Tom Budzynski (1998), where he used both neurofeedback and AVE to improve mental function in a 75-year-old man. In a further study using a DAVID Paradise XL and a 10-station multiple system, Budzynski

  • Tang (2001) treated 31 seniors from two seniors’ homes in Seattle. They used audio-visual stimulation (AVS) “sessions” in the form of random frequency stimulation from 9 to 22 Hz over an average of 33 treatments to rejuvenate brain function. Because 10 people were treated at a time, treatment was very cost effective as compared with one-on-one therapy such as cognitive rehabilitation or neurofeedback. A computer based continuous performance test (CPT), the Microcogii, was used to assess mental function (Elwood, 2001).

The Microcog measures attention, reasoning ability, memory, spatial ability, reaction times, processing speed and accuracy, cognition and proficiency. Approximately 60 to 70% of all subjects (Figure 3) showed improvements in these measures. Figure 4 shows the average group improvements in different measures within the Microcog.

Figure 3. Microcog Results Following AVE – % of Seniors with Improvement.

Figure 4. Microcog Results Following AVE – Amount of Improvement.

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Within the group was one woman with rapidly progressing dementia of the Alzheimer’s type. Because of the severity of her dementia, a full quantitative electroencephalogram (QEEG) and Low Resolution Brain Electromagnetic Tomography (LORETA) assessment was performed. The LORETA is a technique which provides a three dimensional view into the subcortical structures of the brain (Pascual-Marqui, 2002). According to the LORETA, the AVS appeared to produce improvement in various brain regions that are involved in the progression of DAT. The results appeared during the first AVS stimulation period and lasted through the continuation of the 33-session treatment period. Specifically, the LORETA showed decreases in abnormal delta in the left temporal lobe and in the superior temporal gyrus and continued beyond the 30-session treatment. In other words, AVS halted the progression of her DAT and reversed its effects to some degree. This is the first evidence that AVS and perhaps AVE could be used as a prophylactic against age-related dementia.

Seniors and Locomotion

Interventions to reduce the risk of falling by reducing depressive symptoms have been only partly successful among the elderly living in the community. Successful studies have used multifaceted approaches including exercise programs, home modifications, falls-prevention education, improving vision and hearing, alcohol abuse awareness, and wearing safer footwear (Rubenstein et al., 1990; Steinberg et al., 2000; Tinetti et al., 1994). However, a perceived problem with interpreting the findings of multifactorial interventions is that determining which component of the intervention program was more effective in reducing depressive symptoms is not always possible (Cumming, 2002). This is a particular concern for public health professionals who want to plan cost-effectiveness fall-prevention strategies for whole populations of elderly persons.

The focus of this present study is to develop a single intervention. Particularly one that will decrease depressive symptoms and reduce falls in the elderly living in the community. This intervention, which involves entraining brain waves, is commonly known as audio-visual entrainment (AVE). AVE differs from AVS in that AVE involves stimulation for several minutes of a non-changing or only slightly changing frequency whereas AVS employs fairly random frequencies. The frequency of stimulation when using AVE is clearly visible in the EEG of the brain of the person who is receiving the stimulation whereas AVS is not.

Evidence in the literature demonstrates a link between AVE and the reduction of depression (Kumano, et al, 1996; Berg & Siever, 2000). However, the precise relationship between AVE and falling remains unclear. It is plausible that a cognitively intact older person who falls or almost falls could reduce his/her chances of future falls by improving his/her precipitating depressive symptoms. The most common origin of depression is related to hypoactivation of the left frontal lobe function (Rosenfeld, 1997; Davidson, et al., 1999), which is observed as heightened alpha activity. This heightened left alpha creates an alpha asymmetry between the left and right frontal lobes, often leaving the right side hyperactivated with the outcome being anxiety (Davidson, et al., 1999). It is plausible that AVE administered in such a way that inhibits left frontal lobe alpha will improve cognition simultaneously while reducing depression and anxiety. In this study, that is exactly what was done (anxiety, however, wasn’t measured).

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The study involving 80 randomly assigned seniors by Berg & Siever (2004), shown in Figures 12 and 13, utilized a stimulus of 17 to19 Hz in the right visual fields and right headphone (left brain stimulation) and provided a stimulus at 10 Hz in the left visual fields and left headphone (right brain stimulation) during a 30-minute preprogrammed session. This approach normalized the asymmetry in brain “alpha” activity that is typical of depression (Rosenfeld, 1997). As a result, depression recorded on the Geriatric Depression Scale (GDS) was reduced significantly (Figure 5).

Figure 5. Geriatric Depression Scale

Balance and gait were measured using the Tinetti Assessment Tool (Tinetti, 1986). Figure 6 shows the improvement in balance as seen on the Balance Mean Scores (BMS). As depression lifted, balance improved.

Figure 6. Balance Mean Scores

In the first month balance improved considerably (P=0.0055), which is seen as a negative correlation (Figure 7). Gait, however, didn’t improve within the first four weeks (p=0.112). Gait, however, did improve once the fear of falling was reduced and confidence was restored. About

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four weeks on average was required before the participants trusted themselves enough to begin walking with a straighter gait. Their gait continued to improve throughout the eight weeks (p=0.0001).

Figure 7. Correlation of Balance & Gait in Relation to Initial Depression Scores

Memory and mental sharpness are also of major importance to seniors. When memory begins to slide, the inflicted often forgets conversations, people, grandchildren, where they parked their car or when they last took their pills. They may become very anxious as the fear of becoming a “lost” person mounts. And anxiety further impairs memory, so it becomes a double-edged sword.

Mental sharpness, memory and reaction times are correlated with brain wave activity. With slower brain waves comes the slower cognition and poorer memory. Fortunately, AVE at beta and sensory motor rhythm (SMR) frequencies can reverse these effects of aging. A study by Chris Palmquist (2014) found significant improvements in immediate and short-term memory as well as increased alpha brain wave frequency, as shown in Figure 8. The CANS-MCI (computer-assisted Neurophysiological Screen for Mild Cognitive Impairment) (Wild, Howieson, Webbe, Seelye and Kaye, 2008) shows that seniors in the control group had even poorer immediate and short-term memory on retest than at the start and their peak-alpha frequency was basically unchanged. What this means is that the placebo condition had no beneficial effect on their memory or brain wave production.

Regarding the treatment group, the graph represents an almost 2-fold improvement in memory as compared with the controls, and that is very significant to a senior’s life. Normal peak-alpha frequency is close to 10 Hz, so a baseline of 9.5 shows that brain waves are already slowing some with age. By nudging their alpha frequency back up to almost 9.9 Hz, their brain waves have become more similar to that made by a 30-40 year old.

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Figure 8. Improvements in Memory and Alpha Frequency Following Beta/SMR AVE Stimulation.

Conclusion

AVE plays a vital role on maintain and even improving attention and cognitive function in seniors. AVE increases energy, reduces depression, and reduces the risk of falling by improving balance and gait. AVE roughly doubles memory and speeds up peak alpha frequency, a marker of mental ability.

Given that memory, overall mental sharpness and cognition (such as problem solving ability) are all improved over roughly 30 sessions and may be done in the comforts of one’s own home, how much more improvement could have occurred over lets-say 60 sessions – or a year? Could that senior go back to school and get that degree he or she always wished they had? Could that senior go on a trip around the world and keep a handle on air-flights, hotels, various bookings and the joys of visiting far exotic places? Could they share many wonderful years with their children and grandchildren. From a mental health perspective, the answer is simply YES, it is very possible!

After the initial purchase of a device for under $500, the use of an AVE is free. There is NO drug that can replicate the benefits of AVE for an aging population. This is one technology that every senior should have by his/her bedside. It’s easy to use, relaxing and most importantly – free!

  1. Address all correspondence to David Siever at Mind Alive Inc. Toll Free: 1-800-661-MIND (6463), Ph: 780-465-6463 Address: 6716 – 75 Street, Edmonton, Alberta, Canada, T6E 6T9.

Web: www.mindalive.com Email: info@mindalive.com

  1. Microcog. Harcourt Assessment Inc. San Antonio, TX. USA. Ph: 800-211-8378. Website: www.harcourtassessment.com.

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