What happens when the normal function of GABA is disrupted?

When the normal function of GABA (gamma-aminobutyric acid), a key inhibitory neurotransmitter in the central nervous system, is disrupted, convulsions can occur. GABA plays a critical role in regulating neuronal excitability throughout the nervous system. It helps to calm neural activity and prevent excessive firing of neurons.

When GABA's inhibitory effects are diminished—whether due to receptor dysfunction, reduced GABA levels, or interference from drugs or toxins—there is an increase in neuronal excitability that can lead to seizures or convulsions. This disruption causes neurons to become overactive, which is a primary mechanism behind seizure activity in various neurological disorders.

In contrast, the other options suggest effects that are not associated with a disruption of GABA function. Improved mood stability, enhanced cognitive functions, and increased physical energy levels typically relate to balanced neurotransmitter activities, rather than the heightened excitability and potential seizures that arise when GABA's function is impaired.