From: steveng@ICSI.Berkeley.EDU (Steve Greenberg)
Date: Sat, 12 Feb 1994 12:50:58 -0800
Subject: [none given]
Message-Id: <199402122050.MAA18854@icsib.ICSI.Berkeley.EDU>
************************************************************************
University of California-Berkeley
Phonology Laboratory Colloquium
................................
This week Paul Lebby, who works as a neuropsychologist at the UCSF
Medical Center, will be talking about some fascinating research
pertaining to the role of hemispheric specialization in the perception
of speech. Paul will be showing some amazing videos of the effect of
sodium amytol (which effectively puts one side of the cortex asleep)
on language behavior. This promises to be an extremely interesting
talk!
Investigating The Neural Basis for Language Asymmetries:
A Novel Approach Using Dichotic-fusion Techniques
Paul C. Lebby
UC-Berkeley (Psychology)
UC-San Francisco (Neurology)
Monday, February 14, 1994
12:00 - 1:00 p.m.
46 Dwinelle Hall
I have been studying auditory perception in patients that have
undergone unilateral temporal lobe surgery for the treatment of
intractable focal epilepsy. My tasks test perception of high
verses low frequency distinctions dependent on ear of presentation
(normal subjects) or side of neurologic damage (patients). Data
indicate a right hemisphere advantage for relative low frequency
distinctions, and a left hemisphere advantage for relative high
frequency distinctions. The stimuli are synthesized CV syllables
[ba, pa, da, ga]. Distinction of voicing (low frequency
distinctions), for example differentiating a [ba] from a [pa] have
indicated a right hemisphere advantage. Place of articulation
distinctions (higher F3 changes) have indicated a left hemisphere
advantage. The talk will be broken up with video and slides
pertaining to the neuropsychology of language. In particular, I
will show a short tape of a Wada test (Sodium Amytol) in which
each hemisphere of a patient is put to sleep for a couple of
minutes, and language function is tested. I will discuss a
patient that has a nice functional asymmetry, with close to normal
speech when one hemisphere is anesthetized and no speech when the
other is put to sleep. It is also interesting to see how a
patient that is rendered aphasic from the amytol will regain
speech in a progression from a type of Broca's aphasia to more
Wernicke's with paraphasias and finally to normal speech. I will
also bring in slides and a short video of the awake Penfield
speech mapping that is done during neurosurgery. The surgery is
done under a local anesthetic so that the patient is able to speak
during the surgery. Then using electrical stimulation, the
regions important to language are mapped. Finally, I will
discuss some proposed research using duplex fusion as a method of
studying language asymmetries.
************************************************************************
From: steveng@ICSI.Berkeley.EDU (Steve Greenberg)
Date: Sat, 12 Feb 1994 12:47:20 -0800
Subject: [none given]
Message-Id: <199402122047.MAA18762@icsib.ICSI.Berkeley.EDU>
************************************************************************
University of California-Berkeley
Phonology Laboratory Colloquium
................................
This week Paul Lebby, who works as a neuropsychologist at the UCSF
Medical Center, will be talking about some fascinating research
pertaining to the role of hemispheric specialization in the perception
of speech. Paul will be showing some amazing videos of the effect of
sodium amytol (which effectively puts one side of the cortex asleep)
on language behavior. This promises to be an extremely interesting
talk!
Investigating The Neural Basis for Language Asymmetries:
A Novel Approach Using Dichotic-fusion Techniques
Paul C. Lebby
UC-Berkeley (Psychology)
UC-San Francisco (Neurology)
Monday, February 14, 1994
12:00 - 1:00 p.m.
46 Dwinelle Hall
I have been studying auditory perception in patients that have
undergone unilateral temporal lobe surgery for the treatment of
intractable focal epilepsy. My tasks test perception of high
verses low frequency distinctions dependent on ear of presentation
(normal subjects) or side of neurologic damage (patients). Data
indicate a right hemisphere advantage for relative low frequency
distinctions, and a left hemisphere advantage for relative high
frequency distinctions. The stimuli are synthesized CV syllables
[ba, pa, da, ga]. Distinction of voicing (low frequency
distinctions), for example differentiating a [ba] from a [pa] have
indicated a right hemisphere advantage. Place of articulation
distinctions (higher F3 changes) have indicated a left hemisphere
advantage. The talk will be broken up with video and slides
pertaining to the neuropsychology of language. In particular, I
will show a short tape of a Wada test (Sodium Amytol) in which
each hemisphere of a patient is put to sleep for a couple of
minutes, and language function is tested. I will discuss a
patient that has a nice functional asymmetry, with close to normal
speech when one hemisphere is anesthetized and no speech when the
other is put to sleep. It is also interesting to see how a
patient that is rendered aphasic from the amytol will regain
speech in a progression from a type of Broca's aphasia to more
Wernicke's with paraphasias and finally to normal speech. I will
also bring in slides and a short video of the awake Penfield
speech mapping that is done during neurosurgery. The surgery is
done under a local anesthetic so that the patient is able to speak
during the surgery. Then using electrical stimulation, the
regions important to language are mapped. Finally, I will
discuss some proposed research using duplex fusion as a method of
studying language asymmetries.
************************************************************************
From: malcolm@apple.com
Date: Sat, 12 Feb 94 11:11:43 -0800
Subject: Infant Music Perception at CCRMA
Message-Id: <9402121911.AA23903@apple.com>
This week we return to music perception at the Stanford CCRMA Hearing Seminar.
How can we better combine our interests then to talk about how infants perceive
music?
This coming Thursday, John Pinto, a student in Anne Fernald's Psych lab,
will be describing his experiments. Anne's lab has been studying infant
perception and they have presented their work several times during the last
few years. John continues this work with a study of how infants react to
pauses in classical music. Infants are very good at detecting "normal"
prosody, can they do the same with music?
Here are the details
Who: John Pinto (Stanford Infant Studies Lab)
What: Infants' understanding of musical structure
When: Thursday February 17th at 11AM
Where: CCRMA Library (Top Floor of the Knoll)
I've always found the results from Anne's lab to be especially surprising and
valuable. Infants are especially difficult subjects but they continue to
amaze me with interesting results. Come to CCRMA on Thursday to find out
more.
-- Malcolm
------- Forwarded Message
From: pinto@spieden.Stanford.EDU (John Pinto)
Title: Infants' understanding of musical structure.
This talk will serve three purposes:
First, I plan to review some of the basic methods used to study infant
perceptual and cognitive development.
Second, I plan to discuss infants' awareness of different aspects of music.
In recent years there has been an explosion of research on the musical
capabilities of young children. Infants have been shown to discriminate tones
solely on the basis of pitch. They have been shown to perceptually group tones
on the basis of both pitch and timbre, and to discriminate the rhythmic and
temporal structure of music. More profoundly, infants are not only sensitive
to sequences of absolute pitches, but to the melodic contour of tones
presented in transposition as well. However, these studies have all
concentrated on infants' capacities to perceive the isolated components of
music. The music that both adults and infants are regularly exposed to is not
simply a series of isolated pitches and rhythms. Rather, it is the
interaction between these and other components that gives rise to musical
experience.
Third, I plan to outline some of the current research we've been doing in Anne
Fernald's lab. This work attempts to extend recent findings from Krumhansl &
Jusczyk (1990) which suggest that infants are sensitive to musical phrase
structure. Six-month-old infants were presented with Mozart minuets segmented
with pauses both at phrase boundaries ("appropriate" excerpts) and at
non-phrase boundaries ("inappropriate" excerpts) in an auditory preference
procedure. There was no significant overall preference for the appropriately
segmented excerpts. However, an order interaction was present such that
subjects who heard the appropriate excerpts on the first trial showed a
significant preference for the appropriate excerpts, and subjects who heard
the inappropriate excerpts on the first trial showed no significant preference
for either type. The same interaction was obtained when six-month-olds were
presented with music composed by Bach and Bartok. One intriguing possibility
that will be discussed is that the initial exposure to "well-structured" music
in some way facilitates infants' ability to discriminate between the two types
of pieces. Similarly, initial exposure to "poorly-structured" music may in
fact disrupt infants' ability to discriminate.
(So, does this mean that you shouldn't expose children to, say, Megadeath
until they are well past the impressionable age? -- Malcolm :-)