Diagnostic Statistical Manual, Fifth Edition: Depressive Disorders

Individuals at the Most Risk of Persistent Depression Disorder:

Psychological Disorders that Can Co-occur with Persistent Depressive Disorder

Sub-types of Persistent Depressive Disorder (Dysthymia)

Persistent Depressive Disorder Specifiers

Sleep Studies on Persistent Depressive Disorder

The Consequences of Having Persistent Depressive Disorder

For the past three years, an individual has felt a persistent sense of sadness and emptiness. While they are still able to go to work and manage daily responsibilities, they often feel fatigued, have trouble concentrating, and struggle with feelings of hopelessness. They describe their mood as 'living under a gray cloud, but not a full-blown storm.' They have not experienced any periods of unusually elevated mood or energy. Based on the chronic nature and specific symptoms described, which diagnosis is the most appropriate?

Mechanism in switching between REM and non-REM at cellular level

REM Sleep and Memory Consolidation

Sleep Studies on Persistent Depressive Disorder

REM Rebound

Muscle Paralysis During REM Sleep

Visual Representation of REM Sleep Brainwaves

Activation-Synthesis Theory of Dreaming

Sleep Stage Analysis

A sleep study participant's brain wave recordings show high-frequency, low-amplitude waves, very similar to those of someone who is awake and alert. Simultaneously, monitoring of their muscle activity shows a near-complete lack of tone in their voluntary muscles. Which statement best analyzes this physiological state?