Tag: brain

Posted on by

The ‘D’ Word: Rethinking Dementia

When the brain is affected by dementia, logical thinking and reasoning ability are affected quite early on. However, the amygdala – the part of the brain that is the integrative centre for emotions, emotional behaviour, and motivation – is less affected. People with dementia (PwD) who have trouble processing logic and reasoning do not have a similar problem with their ability to feel emotion. Indeed, as far as research can show, people with dementia still feel happy, sad, afraid and so on, even after they can no longer speak or recognise people they know well, even when they need total support to live their lives. It seems, though, that most people – including many well-meaning carers – are unable to adjust their own behaviour and thinking to accommodate the continuance of emotional experience, along with the decrease in reasoning ability of the person they care for.

If someone has a broken leg we do not assume that they could walk on it ‘if they tried’. We do not suggest that they listen very carefully whilst we explain how to walk. We do not try to divert their attention so that they can walk without thinking. No. Instead we set the broken bone and maintain it in position with support (a leg-plaster). We allow them to rest the leg. We give them a crutch to aid movement and we accept that walking will be slow and difficult until the leg is healed. Similarly, if someone has part of their brain which is not functioning we should make allowances. We should try to keep the parts of the brain that do function in as good order as possible – by encouraging social interaction, physical exercise and general health. We should allow the brain to ‘rest’ when it needs to by not demanding actions which are no longer essential. We should supply a ‘crutch’ using memory aids, providing unobtrusive help and support. We accept that everything cannot be as it once was because this brain is not what it once was.

It is important, though, that society should recognise the relative importance of the emotions which come to predominate when logical thought and thought processing are deteriorating. Society in general does not much like domination by the emotions. ‘Civilised’ people should learn to control emotion and apply logic and reason to manage their everyday life, it is thought. But what if we can no longer use our logic and reasoning to help us come to terms with emotions? Suppose we are unable to understand and work out why we feel sad or happy? Imagine if we feel these emotions overwhelmingly, but we are unable to deal with them by a change of scene, by talking through our feelings, by taking actions to alleviate the misery or express the happiness. Imagine being no longer able to speak coherently enough to tell anyone how frightened you feel or how angry. What might you do? How might you try to express yourself? Perhaps you would try to hide somewhere, or to run away and escape. Or you might shout and get angry. Perhaps if no one made any effort to understand, you might try to use physical methods to show them how you feel.

This blog is taken from The ‘D’ Word: Rethinking Dementia by Mary Jordan and Dr Noel Collins

Posted on by

Understanding a brain with dementia

How the brain works, a very logical and straightforward article produced by Alzheimer’s Australia, gives a clear and basic introduction to the brain dysfunction involved in dementia and always helps me to picture what is going on inside of the head of someone affected by this disease. The article explains that the brain can be thought of as a factory and that the factory runs at peak efficiency when all the parts are working.

At the front of this factory (the frontal lobes) are the directors. They make plans for the factory and decide on who is going to do what and when. As things get underway they get feedback or other information as to how well things are going and they make judgements on what looks good and what does not look so good. Then they make further decisions, to change that or to keep this, and show their appreciation and annoyance. Planning, organising, judging, decision-making and appreciation therefore take place at the front of the brain.

In the middle of the factory (the parietal association cortex) are the managers. Each manager runs his/her own department. The left side is the talking side: there is a speech department that moves the throat, tongue and lip muscles, a language department that is responsible for finding the words you want and knowing the words’ meaning, a music department, and various other departments. The right side is the picture side, with a motor department that helps you find your way around a building, knows where you are when you are driving a car, puts your arm through the sleeve of your coat, and so on.

The directors pass their plans on to the managers, and the managers make sure the directors’ plans are carried out. In order to do this, directors and managers communicate freely with one another, sending messages back and forth.

At the bottom of the factory (the limbic region, amygdala and basal ganglia) are the workers. They do not know what the directors’ plans are, but they know their job and they do that same job day in, day out. They take care of things like appetite control, the need for water, staying alert and awake or going to sleep, as well as basic emotions, such as turning on tears, making the face red and increasing the pulse rate.

When brain damage occurs, basically someone gets sacked. It can be the director, a manager or a worker, depending on where the damage takes place. Someone can also go on temporary leave of absence – for example, when there is a temporary swelling or loss of blood supply in the brain that is reversed in a short time.

The result of any injury, whether permanent or temporary, is that the efficiency of the factory is reduced. Messages are sent but are not picked up. Directors get annoyed. The managers get tired and the emotional workers get overwrought. Confusion reigns.

Understanding who has been fired and who is still on the job can help in interpreting the behaviour of people living with dementia.

This blog is taken from The Dementia Whisperer: Scenes from the frontline of caring by Agnes B Juhasz.