Abstract Fifty years ago, Mark Rosenzweig and coworkers described environmental effects
on brain chemistry and gross brain weight. William Greenough then used stereological tools …

While the cellular, and possibly the molecular, bases of some forms of learning appear to be
at the threshold of understanding in some invertebrate preparations, the bases of learning …

Young adult rats (60 days old) were placed in complex environments (EC) or kept in
individual cages (IC) for 10, 30, or 60 days. Previously reported findings in these same …

A number of experimental approaches have indicated differential interneuronal connectivity
following differential experience during both development and adulthood. In Golgi …

The last fifteen years have yielded an ever increasing amount of information about brain
pathways for song control in songbirds. I review here aspects of this work which suggest that …

Abstract Changes in the dendritic arborisation of Golgi‐impregnated basal forebrain
neurones with respect to size, shape, orientation, and topology of branching were …

It is well‐documented that enriched environment and behavioral training can lead to
improved learning and memory, as well as structural and morphological changes in the …

Dendritic maturation of pyramidal neurons in layers III and V of the rat visual cortex was
quantified in rapid Golgi‐stained tissue from socially housed hooded rats at ages 15, 30 …

Restricting visual experience during early postnatal development leads to profound and
permanent alterations of cortical functioning. Depending on the deprivation procedure, cells …

Male and female hooded rats were raised from weaning in either a complex or an isolated
environment. After one month, the visual cortex was Golgi—Cox-stained and layers III and V …