Radio 4 in Four - Why do we have problems recalling words? - ÃÛÑ¿´«Ã½ Sounds

Radio 4 in Four - Why do we have problems recalling words? - ÃÛÑ¿´«Ã½ Sounds
Why do we have problems recalling words?
Psychologist Dr Meredith Shafto explains what's going on in our brains.