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Cognitive Effects of Hearing Loss

Includes the following article: Cognitive Manifestations in Unmitigated Hearing Loss Questions may be submitted online through the "contact us" section of this website or sent directly to: DigiCare Hearing Research & Rehabilitation, P.O. Box 706, Rye, CO 81069, or faxed to (719) 676-6882. Your name, address, and telephone number along with your request are required in order to receive a reply from the Digicare team.



COGNITIVE MANIFESTATIONS IN UNMITIGATED HEARING LOSS

By Max Stanley Chartrand, M.A.
DigiCare Hearing Research & Rehabilitation

We know today that the very essence of cognition---or one's awareness and connection to life around them---is fed more through the auditory sense, than through all of the other senses combined. Certainly an understanding of auditory-cognitive relationships would shed more light on how human beings depend upon "normal" hearing for their health, safety, social relationships, mental development, aesthetic skills, and over-all life function. The loss of these attributes of humanity can then be appropriately correlated to the real cost-effectiveness of hearing instrumentation and rehabilitation for the hearing instrument consumer (Ratcliffe, 1992).
If we were to survey professionals in all sectors of the hearing health care field on the common effects of hearing loss we undoubtedly would compile quite an extensive listing of psychological manifestations reportedly stemming from hearing loss. But would we find the same agreement in classifying those effects by degree and type of impairment, overlay factors, gender, age, specified ear, and varied listening environments?
These variables tend to add complexity, which make easy categorization virtually impossible. There could be potentially as many "categories" as there are people suffering from hearing impairment. So, simple categorization is not a feasible goal when attempting to understand the psychology of hearing impairment (Sandlin, 1988).
On the other hand, a lack of understanding of this subject---or worse, to ignore its very existence---can unwittingly lead to a misconstrual of the true role and value of the hearing instrument specialist. It presupposes that the only true services provided through the dispensing practice are merely business and technical in nature.
But the fact remains, and will always be so, that this is a people-oriented field with real people problems, which need addressed alongside the more straightforward physical challenges (Alpiner and Garstecki, 1996). No amount of technology or abstract "service" can effectively supplant the need for the human touch in aural rehabilitation, or the mastery of its inherent psychology. As we unfold the concepts of the psychology of the hearing impaired, it will become more evident how complex these effects can be and the potential negative impact upon the lives of those who suffer under its sensory filter (Chartrand, 1999).
Yet out of this complexity can be found a number of simple concepts, and tools through which we may more effectively guide the hearing impaired patient through their rehabilitative journey.

"The greatest effect is psychological"

The consensus among many of today's audiological researchers is that "the greatest single handicap in hearing loss is psychological" (Moore, 1982). This fact is echoed in myriad papers and texts by Ramsdell (1968), Myklebust (1964), Newby (1985), Reiter (1985), Sandlin (1988), to name but a few.
In fact, the author has spent most of his life experiencing firsthand this very subject with a progressive severe-to-profound sensorineural hearing loss, and the greater part of those years researching and teaching about discoveries from both the laboratory and real life experiences in the psychological and psychosocial domains of hearing health. The indisputable evidence is there.
Following is an incomplete list of potential psychological problems that have been reported as arising, directly or indirectly, from hearing loss of all types and degrees:
• Stress, anxiety
• Distrust, paranoia
• Insecurity
• Superior/inferior complex
• Lowered self-esteem
• Denial and disbelief
• Defensiveness
• Anger, frustration
• Social withdrawal, isolation
• Social inappropriate behavior or responses
• Bitterness, resentment
• Overly aggressiveness
• Lethargy, resignation, passivity
• Depression, cognitive dysfunction
• Emotionally driven hypertension
• Substance and familial abuse

The reader will notice that these conditions can be and are manifested in normal hearing individuals, as well. What sets apart the hearing impaired individual from the normal hearing in the above manifestations are the unavoidable and near inescapable debilitative factors found in unmitigated hearing impairment. Prevalent factors may be:

1. Without intervention, the effects of hearing impairment can be virtually pervasive in all aspects of life.
2. Progressive hearing impairment is insidious, and can stifle personal progress in the various stages of life, from educational and social achievements during childhood to familial, career and retirement expectations in adults.
3. Interpersonal relationship bonding can be significantly hampered or severed without appropriate auditory and communicative function.

It is the pervasive and insidious nature of hearing loss that often creates the exaggerated manifestations in those with acquired hearing loss---it’s invisibility to all, including the sufferer. Presumably, rehabilitation would minimize those same manifestations, and allow a resumption of a more normal lifestyle and cognitive connection (Van Hecke, 1994). Whether rehabilitation is made complete through appropriate amplification, or accommodated through a mosaic of cochlear implantation, assistive devices, coping strategies, and acceptance of limitations seems to matter little.
In other words, once outcomes are weighed against available solutions, realistic expectations can allow a sense of “normality”, and therefore, minimal psychological effects. In this way, even those with severe losses may enjoy an appreciable degree of normality in their lives. But only after all viable options of medical, technological and rehabilitative resources have been utilized.

Denial & Defensiveness
Denial is one of the first responses of the hearing impaired upon learning of their impairment (Tye-Murray, 1998). It matters little if the initial “assessment” came from a spouse, a close friend, or even a trained professional. Most individuals, upon first hearing the unwanted news, feel as if they are being accused of something over which they have some control. Does it mean that I am inadequate, do I appear to be mentally slow, am I somehow different from everyone else, less of a person? What brings the impaired person to this point is the near Pavlovian (social) reflexes developed from repeatedly being accused of “not paying attention”, “hearing when you want to”, “you never listen to me anymore” (Chartrand, 1997).
Those harsh accusations are the natural outcroppings of innumerable experiences during critical moments in one’s life: during a noisy social function; dining in a restaurant with friends; on the job with machinery whirring in the background; or frantically following directions while driving to a function for which one is late. In these and countless other situationally challenging listening situations, even a mild---otherwise undetected---loss becomes exposed, but only in psychosocial disguise. Emotions flare, patience tried, and rationale searched for. So, at the very beginning of, say a loss of merely 20-25dB PTA, emotional walls are already being carefully put into place.
Over time, accusations get returned “in kind”: you mumble, there’s too much noise in the background, I was busy doing something else when you…, this time you can go alone. These are but a few responses typical of the unintentional revenge of one who has suffered through recurrent episodes of humiliation as a result of their undiscovered/unmitigated hearing loss (Danhauer, et al, 1985).
Only the most patient, compassionate of people---standing on either side of the impairment---will not take offense during such stifled communicative exchanges. So it goes without saying that as the loss progresses, denial deepens and defenses build. Hence, one with a moderate loss will be less inclined to take that first step toward remediation on their own, than even one with a mild loss. And---it may come as a surprise to any rational, normal hearing observer---those with uncorrected severe hearing impairments are even less inclined to move forward on their own than their less-handicapped counterparts!

Depression & Uncorrected Hearing Loss
Depression is generally classified as a cognitive disorder in the sense that it colors one’s perception of reality and the larger world around them. Indeed, many recent studies examining hearing impairment and Alzheimer’s Disease (AD) in the elderly consistently show a positive correlation between the two afflictions (Palmer et al, 1998). Conversely, most of these studies note a remarkable reduction, even absence, of the symptoms of dementia when the hearing impaired/demented subjects are given an effective aural rehabilitation program. This is no minor coincidence. We now know that uncorrected hearing impairment causes depression and cognitive dysfunction (Herbst and Humphrey, 1980)(Jones et al, 1984)(Eastwood et al, 1985)(Mulrow et al, 1990).
While the above cited studies deal primarily with the elderly, similar findings may be projected into younger hearing/cognitively impaired populations, albeit to a lesser or different degree. The general question today is not whether hearing loss causes depression, but how it causes it. Through the prism of a depressed mental state, many deleterious changes can occur in attitudes, relationships, and future outlook.
How does one get to this state of affairs? What manner of forces work on one’s life that personalities and relationships begin to change, life views diminish, and opportunities wither away into the noisy void of auditory lesions?

A Challenge for Hearing Health Professionals
Certainly, the normal hearing professional enters this scenario at a disadvantage, for they lack a true point of reference in their own experience with which to relate to those they serve. Relying upon purely intellectual understanding it is difficult to truly come to grips with the forces spoken of above.
Many times over the years, this author has stated in lectures that, whether one is a normal-hearing hearing aid engineer, manufacturing marketing director, or an audiologist or hearing instrument specialist, you are the one who is handicapped.
For only an intimate and exceptional knowledge of the forces that shape hearing impaired individuals will provide the necessary foundation to succeed in truly helping them. In doing so, hearing health professionals may gain a better understanding of the possible forces that rule the lives of the hearing impaired population.
That knowledge can go far in helping them accept both the reality of a long-denied hearing impairment and the solutions available to lift them back into better hearing and communication, and greater cognitive connection to life around them.

Dr. Chartrand serves as vice-president of marketing and professional education at AmericanEar Laboratories, Inc. He is also profoundly deaf and utilizes a cochlear implant and a hearing aid. Correspondence: 6080 Burnham Ave., Suite #1, Las Vegas, NV 89119, or 800-313-2744.

REFERENCES
Alpiner, J.G., and Garsecki,D.C., “Audiologic rehabilitation for adults: Assessment and management” in Introduction to Audiologic Rehabilitation, (eds.) Schow, R.L., and Nerbonne, M.A., Needham Heights, MA: Allyn & Bacon, pp. 361-412 (1996).
Chartrand, M.S., “Psychosocial effects of hearing impairment” in Hearing Instrument Science and Fitting Practices, Robert Sandlin, ed., 1st edition, Livonia, Michigan: National Institute for Hearing Instruments Studies, (1997).
Chartrand, M. S., Audition, Cognition, & the Human Brain, a continuing education course, Livonia, MI: National Institute for Hearing Instruments Studies, (1999).
Danhauer, J.L., Johnson, C.E., Kasten, R.N., & Brimacmobe, J.A., “The hearing aid effect: Summary, conclusions, and recommendations”, The Hearing Journal, pp. 12-14, March (1985).
Eastwood, M., Corbin, S., and Reed, M., “Acquired hearing loss and psychiatric illness: an estimate of prevalence and comorbidity in a geriatric setting”, Br J Psychiatric, 147, p. 552, (1985).
Herbst, K., and Humphrey, C., “Hearing impairment and the mental state in the elderly living at home”, Br. Med J Clin Res, 281, pp. 903-905, (1980).
Jones, D., Victor, C., and Veter, H., “Hearing difficulty and its psychological implications for the elderly”, J Epidemiol Community Health, 38, pg. 75, (1984).
Mulrow, C., and Aguilar, C., and Endicott, J., “Association between hearing impairment and the quality of life of elderly individuals”, Journal of the American Geriatric Society, 38, pp.45-50, (1990).
Myklebust, Helmer R., The Psychology of Deafness, 2nd edition, eds. Grune & Stratton, Inc., (1964)
Newby, Hayes A., "The Handicap of Hearing Impairment", in Audiology, 5th edition, Englewood Cliffs, NJ: Prentice-Hall, Inc., Chap. 10, (1985).
Parkes, C.M., "Psycho-Social Transitions: A Field for Study", Social Science and Medicine, C, pp. 101-115, (1977).
Ramsdell, Donald A., "The Psychology of the Hard-of-Hearing and the Deafened Adult", in Hearing and Deafness, 4th edition, eds. Davis & Silverman, Chap. 19, (1968).
Ratcliffe, D., (Citation) Task Force on the National Strategic Research Plan of the National Institute on Deafness and Other Communication Disorders. In Hearing loss and hearing restoration: Costs, benefits, and quality of life. Hearing Journal, 45(9): pp.11-18 (1992).
Reiter, Ronald, Ph.D., "Patient Information and History", in Hearing Instrument Science and Fitting Practices, Zelnick, Ernest, ed., Livonia, MI: National Institute for Hearing Instruments Studies, Chap. III, (1985).
Rollin, Walter J., The Psychology of Communication Disorders in Individuals and Their Families, Englewood Cliffs, NJ: Prentice-Hall, Inc., (1989).
Sandlin, Robert E., Ph.D., "Psychology of the Hearing Impaired and Counseling Strategies", Continuing education lecture recorded by First Tape, Inc., (1988).
Tye-Murray, N., Foundations of Aural Rehabilitation, San Diego: Singular Publishing, pp. 247-256, (1998).
Van Hecke, M. L., “Emotional responses to hearing loss” in Effective Counseling in Audiology: Perspectives and Practices, J. G. Clarke and F. N. Martin, eds., Englewood Cliffs, NJ:Prentice-Hall, pp. 92-115 (1994).

 

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