Understanding excitatory neurotransmission provides critical insights into how the nervous system modulates sensory responses. In this experiment, you'll explore how nicotine—an agonist of excitatory nicotinic acetylcholine receptors—can significantly increase neural firing rates, highlighting key mechanisms underlying sensory processing.
Neurotransmitters modulate sensory inputs by increasing or decreasing neuron firing rates. In crickets, nicotine acts as an excitatory neurotransmitter, significantly amplifying neural responses in the sensory cercal system, which detects air movements. This experiment lets you observe how nicotine enhances neural signaling, illustrating fundamental excitatory mechanisms.
Notice an increase in the firing rate and amplitude of spikes following nicotine application.
Analyze how nicotine binding to receptors enhances neural excitability and responses.
Why do we need more than one electrode to measure neural activity? In this experiment, you’ll explore the role of reference electrodes and how their placement affects recordings.
Ever wondered how substances like nicotine and MSG alter brain activity? Explore how neurotransmitters affect sensory neuron responses with help from a cricket!
