Chemical control of the Brain and Behaviour

To begin with, I think it’s fascinating how does the different pathways spread widely into the brain. As we have learned so far during the course, there are many areas in neuroscience where there are caps in knowledge. Especially different types of neurons, patterns among other things. How does these pathways actually work and what is our understanding about their functions? Personally, I’m really interested about the complexity of the brain. One good example of these caps in our knowledge and complexity of the brain are ascending pathways from locus coeruleus. It has 12 thousand neurons, and each has approximately 250 thousand synapses across cortex and cerebellum. As we know, this part of the brain and pathways are connected to for e.g. mood and depression. We all know that neuroscience today can’t give completely perfect answers for each question. To really understand this kind of system might not be in near future.

Hypothalamo-pituitary portal circulation functioning is rather interesting. The fact that axons from hypothalamus does not extend into the anterior lobe, but instead use of hormones and blood veins, tells me even more about brain’s complexity.

The excursion to Elekta was truly interesting. During the two hours presentation I learned a lot about the magnetoencephalography (MEG) technology. The similarities and key differences between EEG and MEG were interesting as well.

Posted by Tomas Villikka

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