Enlitx
Bluelighter
- Joined
- Feb 11, 2004
- Messages
- 735
Source?
Source?
Source? (And another source for "in evolutionary terms", please?)
While in our time it is impossible to separate science from philosophy, it is also very important not to conflate philosophical musings with empirically-based scientific theorems.
Here is a quote from an article on the evolutionary limbic system:
"The limbic system is embryologically older than other parts of the brain. It developed to manage 'fight' or 'flight' chemicals and is an evolutionary necessity for reptiles as well as humans.
Recent studies of the limbic system of tetrapods have challenged some long-held tenets of forebrain evolution. The common ancestors of reptiles and mammals had a well-developed limbic system in which the basic subdivisions and connections of the amygdalar nuclei were established. "
The limbic system of tetrapods: a comparative analysis of cortical and amygdalar populations |journal=Brain Behav. Evol. |volume=46 |issue=4–5 |pages=224–34 |year=1995 |pmid=8564465 |doi=10.1159/000113276]
This shows that the limbic system has long been with animals as a way of motivating or rewarding them.
Here is an article on dopamine as motivation and reward:
Neuronal Activity Related to Reward Value and Motivation in Primate Frontal Cortex
Matthew R. Roesch and Carl R. Olson (9 April 2004)
Science 304 (5668), 307. [DOI: 10.1126/science.1093223]
I have to get ready for school, so I am not going to look for a source about too little or too much dopamine being counter-productive, but I will look later. It is one of those common sense things though, how productive for a species would a heroin or coke addict be.