Para-jumble (journal growth in neurophysiology): Reorder the sentences from pre-1960s scattering to post-1960s specialization, naming a key journal and its format. S1 = "Since the sixties there has been an increasing interest in neurophysiology, which deals with the neural bases of mental activity and behaviour." S6 = "So far the journal has published a mixture of articles including reports and investigations." Between S1 and S6, arrange the history and examples: P = "It has a format which is very similar to that of Brain and Language, a sister journal." Q = "Since then, a number of journals devoted entirely to this area of research have appeared." R = "Before the 1960's, when this field was the concern of a small number of investigators, research articles were scattered in various neurological journals." S = "Brain and Cognition is one such journal." Choose the correct sequence of P–Q–R–S that completes the paragraph.