Device for the time-based analysis of the agitation of a bedridden patient includes elements (4) for acquiring the patient's shouts and elements (5) for acquiring the patient's movements, the acquisition elements being connected to storage elements (9) suitable for storing the acquired data accompanied by a time stamping of the latter, the storage elements being connected to analysis and presentation elements (10) suitable for providing care staff with a representation of the frequency and duration of the patient's shouts and movements which are representative of the patient's agitation over a determined time span, characterized in that the elements for acquiring shouts include a bandpass filter (6) suitable for isolating the shouts from speech and ambient noise.