By Michael J. Renner
Enriched and Impoverished Environments: results on mind andBehaviour is the latest evaluation of the lively zone of neuronal plasticity. The query of the way event is recorded is prime to psychology; speculations and investigations about the function of the mind during this technique have entered a very interesting section as of the overdue 1980's. Manipulations of environmental complexity is without doubt one of the earliest equipment used in the examine of neural plasticity. This monograph organizes the facts so far about the responsiveness of neural and behavioural platforms to exterior manipulation of our environment. additional attention is given to the problems of causation of the overall results of atmosphere on mind and behaviour.
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Extra info for Enriched and Impoverished Environments: Effects on Brain and Behavior
These include total content and concentration of the nucleic acids RNA and DNA, brain protein content, and measures turnover rates cholinergic terase and receptors. indicating the concentrations of specific neurotransmitters system, as indicated by acetylcholinesterase) The results of these discussed in the sections below. the and and (including the enzymes cholines- neurotransmitter investigations will be 29 Nucleic Acids Bennett (1976) reported lower DNA density in cortical tissue for EC rats, measured as DNA per milligram of tissue.
When compared to in the (ChE) total in 1962). the of the EC rats general (Rosenzweig, showed increases enzyme Krech, cholinesterase Bennett (Rosenzweig, of the brain, Bennett, no and consistent Diamond, & in tissue weight, of EC rats were still significantly higher rats rest cortex littermates, When corrected for changes levels IC IC activity Diamond, the ChE in EC than 1972c). In the pattern of differences has emerged over multiple studies. Although rats housed in EC were initially reported to have greater total activity of the specific enzyme acetylcholinesterase (AChE) in both cortex and subcortex (Bennett, & Rosenzweig, Krech complex picture.
The understanding differential housing brain housed The in environments and and of often effects demands examination of changes. environments that they will ever-increasing behavioral behavioral complex is inference in our understanding of neural of between This unexamined. in differential sion implication on animals with an enriched history exceed their be obvious environments findings unstated ence of from ished counterparts also the a brain changes and alterations the of relationship Although in expan- consequences from those housed in impoverished environments, between of experi- parallel behaviorally are goes detail animals different the linkages behavior are not obvious.