Sensory Cortex MCQ Quiz | Neurophysiology

Welcome, MBBS students! This quiz is designed to test your understanding of the Sensory Cortex, a crucial component of Neurophysiology. You’ll face 25 multiple-choice questions covering key concepts like the somatosensory areas, sensory homunculus, cortical plasticity, and the specialized functions of the visual, auditory, gustatory, and olfactory cortices. This assessment will help you solidify your knowledge on somatotopic representation, cortical lesions, and sensory pathways. After submitting your answers, you’ll receive your score and see a detailed breakdown of correct and incorrect responses. For your revision, you can download a PDF document containing all the questions along with their correct answers. Good luck!

1. The primary somatosensory cortex (S1) is predominantly located in which gyrus of the cerebral cortex?

2. Which set of Brodmann areas corresponds to the primary somatosensory cortex (S1)?

3. In the sensory homunculus, which body parts have the largest representation, reflecting high sensory acuity?

4. A lesion in the somatosensory association cortex (Brodmann areas 5 and 7) would most likely result in:

5. The principle of columnar organization in the sensory cortex implies that:

6. Which sensory modality is primarily processed in Brodmann area 3a of the S1 cortex?

7. The primary visual cortex (V1) is located within and around which major sulcus?

8. Brodmann area 17 is also known as the:

9. The primary auditory cortex is located in the:

10. The phenomenon where the cortical representation of a body part expands with increased use, such as in musicians, is an example of:

11. The primary gustatory (taste) cortex is located in the:

12. Which major sensory pathway conveys information about fine touch, vibration, and proprioception to the somatosensory cortex?

13. A patient experiences loss of pain and temperature sensation on the left side of their body. This deficit is most consistent with a lesion in the:

14. The secondary somatosensory cortex (S2) receives input from S1 and is involved in:

15. The primary olfactory cortex is unique among sensory systems because its projections largely bypass the:

16. The “what” pathway of visual processing, responsible for object recognition, is the:

17. Which area of S1 is most involved in integrating information about an object’s size and shape, crucial for stereognosis?

18. The auditory cortex is organized tonotopically. This means that:

19. A condition where a patient neglects one side of their body and the surrounding space, often due to a lesion in the non-dominant parietal lobe, is known as:

20. Phantom limb sensation is thought to be caused by:

21. The “where” or “how” pathway of visual processing, involved in spatial awareness and guidance of actions, is the:

22. Which part of the thalamus is the primary relay station for somatosensory information heading to S1?

23. Representation of the lower limb in the primary somatosensory cortex is found on the:

24. Two-point discrimination is a clinical test used to assess the functional integrity of the:

25. Which of the following statements about the sensory cortex is FALSE?