Which of the following features is associated with partial seizure disorder?

The association of an anterior temporal spike focus with partial seizure disorder is well established in electroencephalography (EEG). In partial seizures, which can be either simple or complex, specific spike wave patterns often localize to particular brain regions. An anterior temporal spike focus indicates that seizure activity originates from the temporal lobe, a common site for partial seizures, especially in conditions such as temporal lobe epilepsy. The identification of this spike focus on an EEG can assist in localizing the area of the brain that may require further evaluation or intervention, making it a critical feature in the diagnosis and management of partial seizure disorders.

The other features mentioned do have their own clinical significance but are not specifically indicative of partial seizure disorder. PLEDs (periodic lateralized epileptiform discharges) typically indicate a different pathology, often related to encephalopathy rather than focal seizures. Photoparoxysmal discharges are more closely linked to photosensitivity and generalized epilepsy rather than focal or partial seizures. Lastly, 3Hz spike and wave complexes are characteristic of absence seizures, which are generalized seizures and do not pertain to partial seizure disorders.