Varying concentrations of a signaling molecule activate different transcription factors and determine cell fate.
The growth cone of a neuron avoids repellant molecules and navigates to innervate the appropriate muscle.
Neurons in the cortical area 5 are active when a cat is straddling an obstacle.
Electrical and chemical signals are used by neurons to communicate with one another at contact points called synapses.
Long-term memory requires the activation of CREB, turning on specific genes that support new synaptic growth.
Short-term memory relies on serotonin activating a protein kinase to modify existing synaptic strength.
The fetal brain grows enormously during pregnancy, both in terms of its size and the number of neurons it has.
Early LTP (short-term memory) depends on a calcium-dependent protein kinase to strengthen an existing synapse.
Late LTP (long-term memory) involves dopamine activation of CREB to support new synaptic growth.