Hypothalamic dopamine neurons control sensorimotor behavior...

Optogenetic activation of th2+ neurons evoked diverse _________ behaviors.

• anxiety

• feeding

• aggression

• movement

Optogenetic activation of thy1+ neurons immediately before the audiomotor stimulus significantly increased startle response probability in fish expressing ChR2, but not non-expressing controls.

• True, except that it was thy2+ neuron activation that was performed

• False

• True

Although neurons in all four th2-expressing hypothalamic nuclei fire during spontaneous and evoked swimming, differences in their activity and connectivity suggest that these cells ___________.

• all project to different nuclei in the brain stem

• fall into functionally distinct groups

• do not produce dopamine

• are in the same functional group

Laser ablation of the th2+ neurons in the preoptic nucleus (PON) _______ the frequency of spontaneous swimming.

• had no effect on

• increased

• reduced

Which of the following occurred after optogenetic activation of thy2+ neurons?

• 1. 1. audiocortex inhibition

• 2. 2. turns were reduced and struggles increased

• 3. 3. Answers # 1 and 2 are correct

• 4. 4. none of these are correct