However , the results were strain - and sex-specific and there did not appear to be a clear-cut correlation between the different changes , so that they finally concluded that although their data do not disprove the idea that deficits in hippocampal neurogenesis solely underlie the behavioral impairments observed in human psychiatric disorders such as depression , they do not provide support for this hypothesis either .
They concluded that their data do not support the idea that deficits in hippocampal neurogenesis alone are the cause of depression .