2014 Fiscal Year Final Research Report
Neural mechanisms in duration discrimination of different sensory stimuli
| Project/Area Number |
24500331
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Cognitive science
|
|---|
| Research Institution | Kinki University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2012-04-01 – 2015-03-31
|
| Keywords | 時間認知 / 時間知覚 / 大脳生理学 / 電気生理学 / 前頭前野 / 線条体 / 霊長類 |
|---|
| Outline of Final Research Achievements |
Time duration is the physical quantity that does not depend on sensory modalities such as visual and auditory senses. We can discriminate between one and two seconds, although we have no specialized organ for it. The prefrontal cortex receives visual, auditory, and somatosensory inputs. Also, previous studies have shown that the prefrontal cortex contributes to duration discrimination. Therefore, the prefrontal cortex is expected to play an important role in duration discrimination. I investigated neuronal activity during monkeys conducted a duration discrimination task, in which duration was assigned visual or auditory stimulus. The results suggest that the prefrontal cortex discriminates visual and auditory duration in different ways, rather than measuring duration after extraction of temporal information from different sensory inputs.
|
| Free Research Field |
大脳生理学
|
