Speech production the larynx that then is modified by the vocal tract into different vowels and consonants. However speech production can occur without the use of the lungs and glottis in alaryngeal speech by using the upper parts of the vocal tract. An example of such alaryngeal speech is Donald Duck talk. The vocal production of speech may be associated with the production of hand gestures that act to enhance the comprehensibility of what is being said. The development of speech production throughout an individual's life starts from an infant's first babble and is transformed into fully developed speech by the age
The Instance of the Letter in the Unconscious, or Reason Since Freud language is not a superstructure'. Lacan uses his concept of the letter to distance himself from the Jungian approach to symbols and the unconscious. Whereas Jung believes that there is a collective unconscious which works with symbolic archetypes, Lacan insists that we must read the productions of the unconscious "à la lettre" - in other words, literally to the letter (or, more specifically, the concept of the letter which Lacan's essay seeks to introduce). In Freud's theory of dreams, the individual's unconscious takes advantage of the weakened ego during sleep in order to produce thoughts which have been censored during