Which of the following is true about attentively driven modulations of cortical activity in sensory cortex Group of answer choices Attentional modulation is strongest in higher level sensory encoding regions. Attentive modulation induces negative firing rates in neurons not tuned to the attended features. Primary visual cortex is the brain region most strongly modulated by goal-directed attention. When attending to locations in space, neurons tuned to oriented lines will increase their firing rates (attention gain)