Biological Psychology: An Illustrated Survival Guide by Paul Aleixo

By Paul Aleixo

“This extraordinary advent to organic Psychology brings the topic to existence in a fashion that no conventional textbook can. i'll definitely be recommending it.”   Brian Wink, Southampton Solent University"My first reaction was that it was once either innovative and brave. Having learn it, i might upload that it additionally makes an important contribution to the on hand texts on organic psychology. This approach is simply what scholars are having a look for.”   Graham Mitchell, collage of NorthamptonTaking a refreshingly cutting edge method of the topic, organic Psychology: An Illustrated Survival consultant makes use of cartoons as a good instructing medium. every one bankruptcy is organised right into a mini lecture, and gives an obtainable creation to key subject matters including:The mind and apprehensive systemVision and auditionThe mechanical and chemical sensesEmotions and sexual behaviourMemory and learningIntended to counterpoint conventional textbooks within the zone, organic Psychology: An Illustrated Survival consultant offers undergraduate and ‘A’ point scholars with an alternate creation to biological psychology and an necessary learn reduction.

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Extra resources for Biological Psychology: An Illustrated Survival Guide

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The important structures in the tectum are the superior colliculi that are involved in vision and the inferior colliculi that are concerned with audition. One important structure in the tegmentum is the substantia nigra that contains neurons that produce dopamine. It is the death of neurons in this area that is believed to be largely responsible for the movement disorder called Parkinson’s disease (see Chapter 5). The midbrain is relatively small in humans. In birds, reptiles, amphibians and fish the midbrain structures are much more noticeable.

PAGE 5 Panels 2 to 6 Note: The following explanation deals with the transmission of the nerve impulse from one neuron to another. Chemical transmission at the synapse It was Ramón y Cajal who showed that neurons were not physically touching each other. These physical gaps are the reason von Helmholtz (see page 3 panel 1 above) did not find the nervous system transmitting electrical messages at the speed of light. The synaptic gaps slow down the message considerably. Up until the 1920s, it was thought that the synapse was bridged by an electrical impulse.

Thirdly, there are chemicals that bind to the neurotransmitter molecules and absorb them back into the presynaptic neuron to be used again later (this is called the reuptake mechanism). And fourthly, there are supporting cells (glial cells) that absorb the neurotransmitter into themselves for re-use by the neuron. Why have chemical transmission at synapses? The chemical transmission at a synapse significantly slows down the nerve impulse. This must therefore have an important purpose. Given that neurons are either activated or not (in other words there is only a ‘yes’ or a ‘no’ response from each neuron) the chemicals at the synapse provide a great deal of complexity to the communication system.

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