Somatosensory lab 1
From neurov.is/on
Contents |
Review
Click the "start quiz" button to review the regions of the spinal cord.
Primary sensory neurons
The following image has the regions with arrows labelled by their name.
The following image has the regions with arrows labelled by their function.
Spinal cord components of somatic sensation
Termination of the fasciculus gracilis and the cuneate fasciculus
In the spinal cord
The following is Slide 155B at the cervical segment. The label locations are not exact, you may want to take the (slightly different) quiz of the cervical segment at Somatosensory lab 2.
In the brain stem
Click on the left side of the following section at the caudal medulla:
Click on the left side of the following section at the caudal medulla (even more caudal than the previous section):
| Column 1 (memorize) | Column 2 (memorize) |
|---|---|
| What nuclei do the fasiculus gracilis terminate into? | Clarke's nucleus and gracile nucleus. |
| What nuclei do the cuneate fasciculus terminate into? | Cuneate nucleus and external cuneate nucleus |
| Neurons in Clarke's nucleus give rise to what tract? | The dorsal spinocerebellar tract. |
| Neurons in external cuneate nucleus give rise to what tract? | The cuneocerebellar tract. |
| What information is carried through Clarke's nucleus? Where is it carried to? | Proprioceptive information about the position of the lower limbs to the ipsilateral cerebellum. |
| From what part of the body does the gracile nucleus receive sensory information? | Lower trunk, legs, and feet. |
| From what part of the body does the cuneate nucleus receive sensory information? | Upper trunk, arms, and hands. |
| From what part of the body does Clarke's nucleus receive sensory information? | It receives proprioceptive information of the lower limbs. |
| From what part of the body does the external cuneate nucleus receive information? | It receives proprioceptive information about the upper body. |
| Where is Clarke's nucleus located? | In the dorsal (posterior) horn of the lumbar and thoracic segment (possibly others?) |
Path of the small diameter fibers
| Column 1 (memorize) | Column 2 (memorize) |
|---|---|
| Where is Lissauer's tract? | It is between the posterior and lateral funiculus, all along the spinal cord. |
| How does Lissauer's tract look in myelin-stained preparations? Why? | Very pale since the small diameter fibers in it are poorly or not at all myelinated. |
| What type of information is carried in lamina I of the dorsal horn? | Pain (nociception) and temperature. |
| What type of information is carried in lamina II (substantia gelatinosa)? | Same as the type in lamina I - Pain and temperature. |
| Where do second order axons from laminae I, V, and IZ (intermediate zone) cross the midline? Where do they ascend? | At the spinal level of origin. Anterolateral quadrant (spinothalamic tract). |
Trigeminal system
(read lab manual)
See also
- Somatosensory lab 2
- Somatosensory system: Central mechanisms
- Somatosensory system: Peripheral Mechanisms
NeuroCog Lectures
| Date | Time | Topic | Instructor | |
|---|---|---|---|---|
| Mon 4-Jan | 10:45-11:45 | Intro to thalamus and cortex | Hendry | |
| Wed 6-Jan | 10:45-11:45 | Neural Mechanisms of pain | Caterina | |
| Fri 8-Jan | 10:45-11:45 | Molecular mechanisms of pain | Caterina | |
| Fri 8-Jan | 1:00-3:00 | Somatosensory lab 1 | Schramm, Blue, Wilson/NT/TM | |
| Mon 11-Jan | 10:45-11:45 | Trigeminal system | Dong | |
| Wed 13-Jan | 10:45-11:45 | Somatosensory system: Peripheral Mechanisms | Hsiao | |
| Fri 15-Jan | 10:45-11:45 | Somatosensory system: Central mechanisms | Hsiao | |
| Fri 15-Jan | 1:00-3:00 | Somatosensory lab 2 | Schramm, Blue, Wilson/NT/TM | |
| Mon 18-Jan | Martin Luther King Jr Day-no classes | |||
| Wed 20-Jan | 10:45-11:45 | Retina and phototransduction | Yau | |
| Fri 22-Jan | 10:45-11:45 | Olfaction and taste | Yau | |
| Fri 22-Jan | 1:00-3:00 | Methods: bioinformatics | Pevsner | |
| Mon 25-Jan | 10:45-11:45 | Early visual processing I | Hendry | |
| Wed 27-Jan | 10:45-11:45 | Early visual processing II | Hendry | |
| Fri 29-Jan | 10:45-11:45 | Shape perception - Connor | Connor | |
| Fri 29-Jan | 1:00-3:00 | Visual systems lab | Schramm, Blue, Wilson/VM/EG | |
| Mon 1-Feb | 10:45-11:45 | Motion perception | Connor | |
| Wed 3-Feb | 1:00-2:00 | Spatial perception | Connor | |
| 5-Feb | Graduate Program Interviews-no classes | |||
| Mon 8-Feb | 10:45-11:45 | Attention lecture | Yantis | |
| Wed 10-Feb | 10:45-11:45 | Receptive fields and image segmentation | von der Heydt | |
| Fri 12-Feb | 10:45-11:45 | Cross-modal integration | Hsiao | |
| Fri 12-Feb | 1:00-3:00 | Methods: mathematical tools and concepts | Niebur | |
| Mon 15-Feb | 10:45-11:45 | The binding problem | Niebur | |
| Wed 17-Feb | 10:45-11:45 | Spinal cord circuitry lecture | Bastian | |
| Fri 19-Feb | 12:00-1:00 | Motor cortex lecture | Bastian | |
| Fri 19-Feb | 1:00-3:00 | Motor neuron lab | Schramm, Blue, Wilson/NT/EG | |
| Mon 22-Feb | 10:45-11:45 | Cerebellum lecture | Bastian | |
| Wed 24-Feb | 10:45-11:45 | ALS | Rothstein | |
| Fri 26-Feb | 10:45-11:45 | Basal ganglia lecture | Stuphorn | |
| Fri 26-Feb | 1:00-3:00 | Cerebellum lab | Schramm, Blue,Wilson/VM/NT | |
| Wed 3-Mar | 10:45-11:45 | Parkinson's disease lecture | Dawson T | |
| Fri 5-Mar | 10:45-11:45 | Huntington's Disease | Ross | |
| Fri 5-Mar | 1:00-3:00 | Basal ganglia lab | Schramm, Blue, Wilson/NT/TM | |
| |March 8-12 Spring Break-no classes | ||||
| Mon 15-Mar | 10:45-11:45 | Oculomotor system lecture | Zee | |
| Wed 17-Mar | 10:45-11:45 | Vestibular lecture | Minor | |
| 17-Mar | 2-Jan | review | ALL TAs | |
| Fri 19-Mar | 10:30-11:45 | METHODS: Movement Research **in Bastian lab, note time change | Bastian | |
| Fri 19-Mar | 1:00-3:00 | Vestibular lab | Schramm, Blue, Wilson/EG/VM | |
| Mon 22-Mar | 9:00 AM | MIDTERM EXAM |
