Mood oscillations

Mood and hedonic value associated with feeding, food intake, foraging, consummatory behaviors, and craving in addiction complex regulation by food entrainable oscillators in the brain and periphery, neuropeptides (including orexins) and biogenic amines. 

Manic-depressive illness connotes a psychotic disorder of affect that occurs episodically without external cause. In endogenous depression (melancholia), mood is persistently low. Mania refers to the opposite condition (p. 234). Patients may oscillate between these two extremes with interludes of normal mood. Depending on the type of disorder, mood swings may alternate between the two directions (bipolar depression, cyclothymia) or occur in only one direction (unipolar depression). 

Post et al. 1992) are also worthy of consideration. Effects on the IP3 receptor-mediated calcium release have also been shown to affect ultrarapid neuronal and cellular calcium oscillations in several different types of preparations, raising the possibility that IP3 modulation, either directly or indirectly through effects on phosphoinositide turnover, could be important to some elements of lithium s and related agents mood-stabilizing effects (Berridge 1989 Dixon et al. 1992 Lupu-Meiri et al. 1994 Varney et al. 

Frijda (1993), p. 381. In his further discussion, Frijda oscillates between saying that moods have no object and that they have unstable, fleeting objects, without noting that the latter description (which corresponds to the view I suggest in the text) restores the lntentionality to moods. 

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