This book provides an updated theory of the nature of anxiety and the brain systems controlling anxiety combined with a theory of hippocampal function which was first proposed thirty years ago while remaining controversial the core of this theory of a behavioural inhibition system has stood the test of time with its main predictions repeatedly confirmed. The neuropsychology of anxiety an enquiry into the functions of the septo hippocampal system second edition isabel llamas download pdf download full pdf package this paper a short summary of this paper 37 full pdfs related to this paper read paper. The neuropsychology of anxiety an enquiry into the function of the septo hippocampal system hardcover may 1 2000 by jeffrey a gray author neil mcnaughton author 50 out of 5 stars 7 ratings. Because of similarities between the behavioural effects of certain lesions and those of the antianxiety drugs it is proposed that these drugs reduce anxiety by impairing the functioning of a widespread neural system including the septo hippocampal system shs the papez circuit the prefrontal cortex and ascending monoaminergic and cholinergic pathways which innervate these forebrain structures