Final answer:
The LSO (Lateral Superior Olive) is inhibited by ipsilateral sound sources and enhanced by contralateral sound sources. This effect is because sounds are louder and reach the closer ear sooner than the ear on the opposite side. The correct option is A.
Step-by-step explanation:
The question is about sound localization and how it is processed differently depending on whether the sound originates from the same side (ipsilateral) as the ear receiving the sound or the opposite side (contralateral). The correct answer to the statement LSO is _____ by ipsilateral sound sources and ______ by contralateral sound sources is: a) Inhibited; enhanced. Sound localization works through the mechanisms of interaural time difference and interaural intensity difference. A sound that comes from the side of one ear is generally inhibited for that ear's processing (because it is loud and arrives first) and enhanced for the ear on the opposite side (since the sound is softer and arrives later due to the head shadow effect).
LSO, or Lateral Superior Olive, is enhanced by ipsilateral sound sources and inhibited by contralateral sound sources. Ipsilateral sound sources refer to sounds coming from the same side as the ear being stimulated, while contralateral sound sources refer to sounds coming from the opposite side of the ear being stimulated. For example, if a sound is coming from the left side of the listener, the left LSO will be enhanced and the right LSO will be inhibited. This is because the sound will arrive at the left ear first, causing a time difference and greater intensity in the left ear.