Neurotoxicants can affect the nervous system in various ways. They may alter neurotransmitter levels, disrupt synaptic transmission, or cause direct damage to neurons. Some neurotoxicants interfere with ion channels, which are crucial for nerve impulse conduction, while others may cause oxidative stress or inflammation in neural tissues. The effects can range from acute to chronic and may lead to conditions such as cognitive impairments, motor dysfunction, or neuropathy.