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PTRS 852 - Neuro Exam 1 > Thalamus > Flashcards

Flashcards in Thalamus Deck (29)
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1
Q

Subcortical Gray Matter

A

Composed of cell bodies

Synaptic connections will be housed here

2
Q

Thalamus

A

Processing station where information is organized before being transmitted to cerebral cortex

3
Q

Thalamus

A

Receives sensory input except olfactory
Transmission of conscious awareness of pain, touch and temperature
Receives and processes all internal motor systems
Helps modulate and plan motor movements

4
Q

Thalamus Functions

A

General arousal via reticular connections
Sensory connections via spinal cord and brain stem
Motor connections via basal ganglia and cerebellum
Emotional tone/affect via limbic system and prefrontal lobe connections

5
Q

Anterior Nuclei of Thalamus

A
Affective expressions (outward appearance of emotions)
Projects to limbic and frontal cortex (regulating behavior and function)
6
Q

Medial Nuclei of Thalamus

A

Relay to reticular formation

7
Q

Lateral Nuclei of Thalamus

A

Important for motor function

Involved with motor loops

8
Q

Posterior Nuclei of Thalamus

A

Involved with sensory relay

9
Q

Limbic Lobe (Anterior Nucleus)

A

Contribute to emotional tone

10
Q

Dorsomedial Nucleus (Prefrontal lobe)

A

Relays information to and from prefrontal lobe

Contribute to judgment, reasoning and executive function

11
Q

Ventral Anterior Nucleus

A

Relays information from basal ganglia/cerebellum to premotor areas and M1
Important for motor planning/regulation

12
Q

Ventral Lateral Nucleus

A

Relays information from basal ganglia to M1 and premotor areas
Important for motor output regulation

13
Q

Ventral Posterior Nucleus

A

Relays information to sensory areas of cortex

14
Q

VPM and VPL

A

Relay somatosensory information to cortex

15
Q

VPI

A

Relay vestibular information to cortex

16
Q

Pulvinar Nucleus

A

Relays information among different cortical areas

17
Q

Lateral Geniculate Nucleus

A

Relays visual information to primary visual cortex

18
Q

Medial Geniculate Nucleus

A

Relays auditory information to primary auditory cortex

19
Q

Intralaminar, centromedian and midline nuclei

A

Relay arousal information from reticular system

20
Q

Internal Capsule

A

Delivers subcortical structure between basal ganglia

21
Q

Anterior Internal Capsule

A

Affective

22
Q

Genu Internal Capsule

A

Motor

23
Q

Posterior Internal Capsule

A

Motor

Sensory

24
Q

Frontopontine

A

From frontal cortex to cerebellum, then relays to pons

25
Q

Motor

A

From motor cortex and planning areas, then relays down through internal capsule to brain and spinal cord

26
Q

Sensory

A

Synapses in thalamus and relays to different sensory cortices

27
Q

Thalamic Pain Syndrome

A

Infarct in VPL (processes pain information)

28
Q

Thalamic Pain Syndrome Symptoms

A

Experience spontaneous burning pain and other abnormal sensations
Response to normal input is abnormal (perceived as painful, but it’s not painful)
Location/intensity of pain varies

29
Q

Thalamic Pain Syndrome Treatment

A

Narcotic analgesic
Antidepressant meds
Antiseizure meds