August 24, 2004
The law of dynamic polarization was initially formed by Cajal and Van Gehuchten in
1891. It states that the electrical impulse carried by a neuron travels in one direction: toward the
soma in de
Review Questions for Chapter 12:
The Auditory System
1. What perceptual qualities are based on frequency and amplitude of sound waves?
2. What is the audible frequency range of humans (in Hertz)? What is the approximate range for
human speech sounds?
November 11, 2004
Reference article: Park et al., 2004. Recycling endosomes supply AMPA receptors for LTP.
In one paragraph, summarize the evidence that dendritic endosomes contain a reserve pool
Recycling Endosomes Supply
AMPA Receptors for LTP
Mikyoung Park,1* Esther C. Penick,3* Jeffrey G. Edwards,3
Julie A. Kauer,3 Michael D. Ehlers1,2.
Long-term potentiation (LTP) of synaptic strength, the most established cellular model of informatio
October 26, 2004
Summarize the Sherrington article on motoneurons.
At the point in time when this research was conducted, there was little anatomical evidence
supporting the existence of afferent fibers in skeletal mus
October 12, 2004
It is much easier to focus on your hand when you hold your hand still and move
your head as compared to holding your head still and moving your hand. Primarily, this
is due to the fact that the vesti
September 28, 2004
1. See attached page for the diagram of a neuron. Neurons are specialized for communication in that
they transmit an electrical signal in the form of an AP and have the capability of
September 7, 2004
Describe the mechanism by which MTX decreases sodium current:
MTX has toxic action similar to tetrodotoxin, which produces a potent and specific
obstruction of sodium channels responsible for action potentia
August 31, 2004
1. The neural plate is part of the dorsal ectoderm. It folds to form the neural groove which then
forms the neural tube and the neural crest. The cavity of the neural tube gives rise to the
Review Questions for Second Exam
1. Are there primary taste categories? If so, what are they?
2. What features of the olfactory system make it so sensitive to low concentrations of odorants?
3. Are individual odors and tastes recognized by a la