Source: Dragon #313
You can channel electrical energy directly into your opponents nervous system. This effect not only causes physical damage but also disrupts the target's coordination.
Prerequisite: Any two spells with the electricity descriptor, control body.
Benefit: This feat can be applied to any spell or power with the electricity descriptor. Anyone damaged by an effect enhanced by Bioelectrical Surge twitches uncontrollably or can make only grossly exaggerated and jerky motions.
For each 10 points of electricity damage the target takes from such a spell or power, it must make a successful Fortitude save or take 2 points of Dexterity damage. The DC for this save equals the save DC for the spell or power (or the save DC it would otherwise have if no save is allowed). A creature with no discernible anatomy (such as an ooze, construct, or undead) or a creature that is immune to electricity damage is immune to the effects of this feat.
To apply Bioelectrical Surge to a spell, the caster must expend 3 power points per spell level. To apply it to a psionic power, the manifester must spend 1 spell level per power level.