Related Experiment Video
Updated: May 4, 2026

Experimental Protocol for Manipulating Plant-induced Soil Heterogeneity
Published on: March 13, 2014
[Short history of mixed states]
M Cermolacce1, R Belzeaux2, N Corréard2
1Pôle universitaire de psychiatrie, CHU Sainte- Marguerite, 13274 Marseille Cedex, France; Laboratoire de neurosciences cognitives, UMR CNRS 6155 & Aix- Marseille Université, Fédération 3C, Marseille, France.
Abstract:
The notion of mixed states is classically associated with descriptions and categories inherited from Kraepelin. However, simultaneous descriptions of depressive and manic manifestations can be traced back to ancient times. Semiology and definitions of these clinical associations have evolved across the times. We provide here a short insight on four distinct periods: Greek authors from ancient times, pre-Kraepelinian psychiatry (18th and 19th centuries), Kraepelin's conceptualization, and contemporary psychiatry (20th and 21st centuries).
Related Concept Videos
States of Matter
Scientists have discovered a fourth state of matter, plasma, that occurs naturally in the interiors...
Classifying Matter by State
States of Matter and Phase Changes
Equation of State
State Space Representation
Consider an RLC circuit, a...
Hybrid Zones

